[{"author":[{"full_name":"Günther, David","first_name":"David","last_name":"Günther"},{"first_name":"Alec","last_name":"Jacobson","full_name":"Jacobson, Alec"},{"last_name":"Reininghaus","first_name":"Jan","id":"4505473A-F248-11E8-B48F-1D18A9856A87","full_name":"Reininghaus, Jan"},{"last_name":"Seidel","first_name":"Hans","full_name":"Seidel, Hans"},{"full_name":"Sorkine Hornung, Olga","last_name":"Sorkine Hornung","first_name":"Olga"},{"full_name":"Weinkauf, Tino","last_name":"Weinkauf","first_name":"Tino"}],"date_created":"2018-12-11T11:54:46Z","date_updated":"2021-01-12T06:54:09Z","volume":20,"oa_version":"None","_id":"1930","user_id":"4435EBFC-F248-11E8-B48F-1D18A9856A87","year":"2014","acknowledgement":"RTRA Digiteoproject; ERC grant; SNF award; Intel Doctoral Fellowship; MPC-VCC","publication_status":"published","status":"public","title":"Fast and memory-efficient topological denoising of 2D and 3D scalar fields","intvolume":" 20","department":[{"_id":"HeEd"}],"publisher":"IEEE","abstract":[{"lang":"eng","text":"(Figure Presented) Data acquisition, numerical inaccuracies, and sampling often introduce noise in measurements and simulations. Removing this noise is often necessary for efficient analysis and visualization of this data, yet many denoising techniques change the minima and maxima of a scalar field. For example, the extrema can appear or disappear, spatially move, and change their value. This can lead to wrong interpretations of the data, e.g., when the maximum temperature over an area is falsely reported being a few degrees cooler because the denoising method is unaware of these features. Recently, a topological denoising technique based on a global energy optimization was proposed, which allows the topology-controlled denoising of 2D scalar fields. While this method preserves the minima and maxima, it is constrained by the size of the data. We extend this work to large 2D data and medium-sized 3D data by introducing a novel domain decomposition approach. It allows processing small patches of the domain independently while still avoiding the introduction of new critical points. Furthermore, we propose an iterative refinement of the solution, which decreases the optimization energy compared to the previous approach and therefore gives smoother results that are closer to the input. We illustrate our technique on synthetic and real-world 2D and 3D data sets that highlight potential applications."}],"issue":"12","publist_id":"5164","type":"journal_article","date_published":"2014-12-31T00:00:00Z","doi":"10.1109/TVCG.2014.2346432","language":[{"iso":"eng"}],"publication":"IEEE Transactions on Visualization and Computer Graphics","citation":{"short":"D. Günther, A. Jacobson, J. Reininghaus, H. Seidel, O. Sorkine Hornung, T. Weinkauf, IEEE Transactions on Visualization and Computer Graphics 20 (2014) 2585–2594.","mla":"Günther, David, et al. “Fast and Memory-Efficient Topological Denoising of 2D and 3D Scalar Fields.” IEEE Transactions on Visualization and Computer Graphics, vol. 20, no. 12, IEEE, 2014, pp. 2585–94, doi:10.1109/TVCG.2014.2346432.","chicago":"Günther, David, Alec Jacobson, Jan Reininghaus, Hans Seidel, Olga Sorkine Hornung, and Tino Weinkauf. “Fast and Memory-Efficient Topological Denoising of 2D and 3D Scalar Fields.” IEEE Transactions on Visualization and Computer Graphics. IEEE, 2014. https://doi.org/10.1109/TVCG.2014.2346432.","ama":"Günther D, Jacobson A, Reininghaus J, Seidel H, Sorkine Hornung O, Weinkauf T. Fast and memory-efficient topological denoising of 2D and 3D scalar fields. IEEE Transactions on Visualization and Computer Graphics. 2014;20(12):2585-2594. doi:10.1109/TVCG.2014.2346432","ieee":"D. Günther, A. Jacobson, J. Reininghaus, H. Seidel, O. Sorkine Hornung, and T. Weinkauf, “Fast and memory-efficient topological denoising of 2D and 3D scalar fields,” IEEE Transactions on Visualization and Computer Graphics, vol. 20, no. 12. IEEE, pp. 2585–2594, 2014.","apa":"Günther, D., Jacobson, A., Reininghaus, J., Seidel, H., Sorkine Hornung, O., & Weinkauf, T. (2014). Fast and memory-efficient topological denoising of 2D and 3D scalar fields. IEEE Transactions on Visualization and Computer Graphics. IEEE. https://doi.org/10.1109/TVCG.2014.2346432","ista":"Günther D, Jacobson A, Reininghaus J, Seidel H, Sorkine Hornung O, Weinkauf T. 2014. Fast and memory-efficient topological denoising of 2D and 3D scalar fields. IEEE Transactions on Visualization and Computer Graphics. 20(12), 2585–2594."},"quality_controlled":"1","page":"2585 - 2594","day":"31","month":"12","scopus_import":1},{"title":"Distributed computation of persistent homology","status":"public","_id":"2043","user_id":"4435EBFC-F248-11E8-B48F-1D18A9856A87","oa_version":"Submitted Version","type":"conference","abstract":[{"lang":"eng","text":"Persistent homology is a popular and powerful tool for capturing topological features of data. Advances in algorithms for computing persistent homology have reduced the computation time drastically – as long as the algorithm does not exhaust the available memory. Following up on a recently presented parallel method for persistence computation on shared memory systems [1], we demonstrate that a simple adaption of the standard reduction algorithm leads to a variant for distributed systems. Our algorithmic design ensures that the data is distributed over the nodes without redundancy; this permits the computation of much larger instances than on a single machine. Moreover, we observe that the parallelism at least compensates for the overhead caused by communication between nodes, and often even speeds up the computation compared to sequential and even parallel shared memory algorithms. In our experiments, we were able to compute the persistent homology of filtrations with more than a billion (109) elements within seconds on a cluster with 32 nodes using less than 6GB of memory per node."}],"page":"31 - 38","citation":{"ista":"Bauer U, Kerber M, Reininghaus J. 2014. Distributed computation of persistent homology. Proceedings of the Workshop on Algorithm Engineering and Experiments. ALENEX: Algorithm Engineering and Experiments, 31–38.","ieee":"U. Bauer, M. Kerber, and J. Reininghaus, “Distributed computation of persistent homology,” in Proceedings of the Workshop on Algorithm Engineering and Experiments, Portland, USA, 2014, pp. 31–38.","apa":"Bauer, U., Kerber, M., & Reininghaus, J. (2014). Distributed computation of persistent homology. In C. McGeoch & U. Meyer (Eds.), Proceedings of the Workshop on Algorithm Engineering and Experiments (pp. 31–38). Portland, USA: Society of Industrial and Applied Mathematics. https://doi.org/10.1137/1.9781611973198.4","ama":"Bauer U, Kerber M, Reininghaus J. Distributed computation of persistent homology. In: McGeoch C, Meyer U, eds. Proceedings of the Workshop on Algorithm Engineering and Experiments. Society of Industrial and Applied Mathematics; 2014:31-38. doi:10.1137/1.9781611973198.4","chicago":"Bauer, Ulrich, Michael Kerber, and Jan Reininghaus. “Distributed Computation of Persistent Homology.” In Proceedings of the Workshop on Algorithm Engineering and Experiments, edited by Catherine McGeoch and Ulrich Meyer, 31–38. Society of Industrial and Applied Mathematics, 2014. https://doi.org/10.1137/1.9781611973198.4.","mla":"Bauer, Ulrich, et al. “Distributed Computation of Persistent Homology.” Proceedings of the Workshop on Algorithm Engineering and Experiments, edited by Catherine McGeoch and Ulrich Meyer, Society of Industrial and Applied Mathematics, 2014, pp. 31–38, doi:10.1137/1.9781611973198.4.","short":"U. Bauer, M. Kerber, J. Reininghaus, in:, C. McGeoch, U. Meyer (Eds.), Proceedings of the Workshop on Algorithm Engineering and Experiments, Society of Industrial and Applied Mathematics, 2014, pp. 31–38."},"publication":"Proceedings of the Workshop on Algorithm Engineering and Experiments","date_published":"2014-01-01T00:00:00Z","scopus_import":1,"day":"01","editor":[{"full_name":" McGeoch, Catherine","last_name":" McGeoch","first_name":"Catherine"},{"last_name":"Meyer","first_name":"Ulrich","full_name":"Meyer, Ulrich"}],"publisher":"Society of Industrial and Applied Mathematics","department":[{"_id":"HeEd"}],"publication_status":"published","year":"2014","date_updated":"2021-01-12T06:54:56Z","date_created":"2018-12-11T11:55:23Z","author":[{"full_name":"Bauer, Ulrich","orcid":"0000-0002-9683-0724","id":"2ADD483A-F248-11E8-B48F-1D18A9856A87","last_name":"Bauer","first_name":"Ulrich"},{"full_name":"Kerber, Michael","orcid":"0000-0002-8030-9299","first_name":"Michael","last_name":"Kerber"},{"full_name":"Reininghaus, Jan","id":"4505473A-F248-11E8-B48F-1D18A9856A87","first_name":"Jan","last_name":"Reininghaus"}],"publist_id":"5008","ec_funded":1,"project":[{"_id":"255D761E-B435-11E9-9278-68D0E5697425","grant_number":"318493","name":"Topological Complex Systems","call_identifier":"FP7"}],"quality_controlled":"1","main_file_link":[{"url":"http://arxiv.org/abs/1310.0710","open_access":"1"}],"oa":1,"language":[{"iso":"eng"}],"doi":"10.1137/1.9781611973198.4","conference":{"name":"ALENEX: Algorithm Engineering and Experiments","location":"Portland, USA","start_date":"2014-01-05","end_date":"2014-01-05"},"month":"01"},{"publist_id":"5007","ec_funded":1,"author":[{"last_name":"Bauer","first_name":"Ulrich","orcid":"0000-0002-9683-0724","id":"2ADD483A-F248-11E8-B48F-1D18A9856A87","full_name":"Bauer, Ulrich"},{"full_name":"Kerber, Michael","orcid":"0000-0002-8030-9299","last_name":"Kerber","first_name":"Michael"},{"last_name":"Reininghaus","first_name":"Jan","id":"4505473A-F248-11E8-B48F-1D18A9856A87","full_name":"Reininghaus, Jan"}],"date_created":"2018-12-11T11:55:23Z","date_updated":"2021-01-12T06:54:56Z","year":"2014","editor":[{"full_name":"Bremer, Peer-Timo","first_name":"Peer-Timo","last_name":"Bremer"},{"last_name":"Hotz","first_name":"Ingrid","full_name":"Hotz, Ingrid"},{"last_name":"Pascucci","first_name":"Valerio","full_name":"Pascucci, Valerio"},{"full_name":"Peikert, Ronald","last_name":"Peikert","first_name":"Ronald"}],"department":[{"_id":"HeEd"}],"publisher":"Springer","publication_status":"published","month":"03","doi":"10.1007/978-3-319-04099-8_7","language":[{"iso":"eng"}],"oa":1,"main_file_link":[{"open_access":"1","url":"http://arxiv.org/abs/1303.0477"}],"project":[{"_id":"255D761E-B435-11E9-9278-68D0E5697425","grant_number":"318493","name":"Topological Complex Systems","call_identifier":"FP7"}],"quality_controlled":"1","abstract":[{"text":"We present a parallel algorithm for computing the persistent homology of a filtered chain complex. Our approach differs from the commonly used reduction algorithm by first computing persistence pairs within local chunks, then simplifying the unpaired columns, and finally applying standard reduction on the simplified matrix. The approach generalizes a technique by Günther et al., which uses discrete Morse Theory to compute persistence; we derive the same worst-case complexity bound in a more general context. The algorithm employs several practical optimization techniques, which are of independent interest. Our sequential implementation of the algorithm is competitive with state-of-the-art methods, and we further improve the performance through parallel computation.","lang":"eng"}],"type":"book_chapter","oa_version":"Submitted Version","user_id":"4435EBFC-F248-11E8-B48F-1D18A9856A87","_id":"2044","status":"public","title":"Clear and Compress: Computing Persistent Homology in Chunks","day":"19","scopus_import":1,"series_title":"Mathematics and Visualization","date_published":"2014-03-19T00:00:00Z","citation":{"mla":"Bauer, Ulrich, et al. “Clear and Compress: Computing Persistent Homology in Chunks.” Topological Methods in Data Analysis and Visualization III, edited by Peer-Timo Bremer et al., Springer, 2014, pp. 103–17, doi:10.1007/978-3-319-04099-8_7.","short":"U. Bauer, M. Kerber, J. Reininghaus, in:, P.-T. Bremer, I. Hotz, V. Pascucci, R. Peikert (Eds.), Topological Methods in Data Analysis and Visualization III, Springer, 2014, pp. 103–117.","chicago":"Bauer, Ulrich, Michael Kerber, and Jan Reininghaus. “Clear and Compress: Computing Persistent Homology in Chunks.” In Topological Methods in Data Analysis and Visualization III, edited by Peer-Timo Bremer, Ingrid Hotz, Valerio Pascucci, and Ronald Peikert, 103–17. Mathematics and Visualization. Springer, 2014. https://doi.org/10.1007/978-3-319-04099-8_7.","ama":"Bauer U, Kerber M, Reininghaus J. Clear and Compress: Computing Persistent Homology in Chunks. In: Bremer P-T, Hotz I, Pascucci V, Peikert R, eds. Topological Methods in Data Analysis and Visualization III. Mathematics and Visualization. Springer; 2014:103-117. doi:10.1007/978-3-319-04099-8_7","ista":"Bauer U, Kerber M, Reininghaus J. 2014.Clear and Compress: Computing Persistent Homology in Chunks. In: Topological Methods in Data Analysis and Visualization III. , 103–117.","apa":"Bauer, U., Kerber, M., & Reininghaus, J. (2014). Clear and Compress: Computing Persistent Homology in Chunks. In P.-T. Bremer, I. Hotz, V. Pascucci, & R. Peikert (Eds.), Topological Methods in Data Analysis and Visualization III (pp. 103–117). Springer. https://doi.org/10.1007/978-3-319-04099-8_7","ieee":"U. Bauer, M. Kerber, and J. Reininghaus, “Clear and Compress: Computing Persistent Homology in Chunks,” in Topological Methods in Data Analysis and Visualization III, P.-T. Bremer, I. Hotz, V. Pascucci, and R. Peikert, Eds. Springer, 2014, pp. 103–117."},"publication":"Topological Methods in Data Analysis and Visualization III","page":"103 - 117"},{"day":"01","month":"06","scopus_import":1,"doi":"10.1145/2582112.2582168","date_published":"2014-06-01T00:00:00Z","conference":{"name":"SoCG: Symposium on Computational Geometry","end_date":"2014-06-11","start_date":"2014-06-08","location":"Kyoto, Japan"},"language":[{"iso":"eng"}],"citation":{"ista":"Bauer U, Lesnick M. 2014. Induced matchings of barcodes and the algebraic stability of persistence. Proceedings of the Annual Symposium on Computational Geometry. SoCG: Symposium on Computational Geometry, 355–364.","apa":"Bauer, U., & Lesnick, M. (2014). Induced matchings of barcodes and the algebraic stability of persistence. In Proceedings of the Annual Symposium on Computational Geometry (pp. 355–364). Kyoto, Japan: ACM. https://doi.org/10.1145/2582112.2582168","ieee":"U. Bauer and M. Lesnick, “Induced matchings of barcodes and the algebraic stability of persistence,” in Proceedings of the Annual Symposium on Computational Geometry, Kyoto, Japan, 2014, pp. 355–364.","ama":"Bauer U, Lesnick M. Induced matchings of barcodes and the algebraic stability of persistence. In: Proceedings of the Annual Symposium on Computational Geometry. ACM; 2014:355-364. doi:10.1145/2582112.2582168","chicago":"Bauer, Ulrich, and Michael Lesnick. “Induced Matchings of Barcodes and the Algebraic Stability of Persistence.” In Proceedings of the Annual Symposium on Computational Geometry, 355–64. ACM, 2014. https://doi.org/10.1145/2582112.2582168.","mla":"Bauer, Ulrich, and Michael Lesnick. “Induced Matchings of Barcodes and the Algebraic Stability of Persistence.” Proceedings of the Annual Symposium on Computational Geometry, ACM, 2014, pp. 355–64, doi:10.1145/2582112.2582168.","short":"U. Bauer, M. Lesnick, in:, Proceedings of the Annual Symposium on Computational Geometry, ACM, 2014, pp. 355–364."},"main_file_link":[{"open_access":"1","url":"http://arxiv.org/abs/1311.3681"}],"oa":1,"publication":"Proceedings of the Annual Symposium on Computational Geometry","page":"355 - 364","project":[{"name":"Topological Complex Systems","call_identifier":"FP7","_id":"255D761E-B435-11E9-9278-68D0E5697425","grant_number":"318493"}],"quality_controlled":"1","ec_funded":1,"publist_id":"4853","abstract":[{"text":"We define a simple, explicit map sending a morphism f : M → N of pointwise finite dimensional persistence modules to a matching between the barcodes of M and N. Our main result is that, in a precise sense, the quality of this matching is tightly controlled by the lengths of the longest intervals in the barcodes of ker f and coker f . As an immediate corollary, we obtain a new proof of the algebraic stability theorem for persistence barcodes [5, 9], a fundamental result in the theory of persistent homology. In contrast to previous proofs, ours shows explicitly how a δ-interleaving morphism between two persistence modules induces a δ-matching between the barcodes of the two modules. Our main result also specializes to a structure theorem for submodules and quotients of persistence modules. Copyright is held by the owner/author(s).","lang":"eng"}],"type":"conference","author":[{"full_name":"Bauer, Ulrich","orcid":"0000-0002-9683-0724","id":"2ADD483A-F248-11E8-B48F-1D18A9856A87","last_name":"Bauer","first_name":"Ulrich"},{"first_name":"Michael","last_name":"Lesnick","full_name":"Lesnick, Michael"}],"oa_version":"Submitted Version","date_created":"2018-12-11T11:56:01Z","date_updated":"2021-01-12T06:55:38Z","year":"2014","_id":"2153","user_id":"4435EBFC-F248-11E8-B48F-1D18A9856A87","department":[{"_id":"HeEd"}],"publisher":"ACM","title":"Induced matchings of barcodes and the algebraic stability of persistence","status":"public","publication_status":"published"},{"author":[{"full_name":"Bauer, Ulrich","first_name":"Ulrich","last_name":"Bauer","id":"2ADD483A-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-9683-0724"},{"full_name":"Ge, Xiaoyin","last_name":"Ge","first_name":"Xiaoyin"},{"full_name":"Wang, Yusu","first_name":"Yusu","last_name":"Wang"}],"date_updated":"2021-01-12T06:55:39Z","date_created":"2018-12-11T11:56:02Z","year":"2014","acknowledgement":"National Science Foundation under grants CCF-1319406, CCF-1116258.","publication_status":"published","publisher":"ACM","department":[{"_id":"HeEd"}],"publist_id":"4850","ec_funded":1,"conference":{"name":"SoCG: Symposium on Computational Geometry","start_date":"2014-06-08","location":"Kyoto, Japan","end_date":"2014-06-11"},"doi":"10.1145/2582112.2582169","language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1","url":"http://arxiv.org/abs/1307.2839"}],"oa":1,"quality_controlled":"1","project":[{"_id":"255D761E-B435-11E9-9278-68D0E5697425","grant_number":"318493","name":"Topological Complex Systems","call_identifier":"FP7"}],"month":"06","oa_version":"Submitted Version","_id":"2156","user_id":"4435EBFC-F248-11E8-B48F-1D18A9856A87","status":"public","title":"Measuring distance between Reeb graphs","abstract":[{"lang":"eng","text":"We propose a metric for Reeb graphs, called the functional distortion distance. Under this distance, the Reeb graph is stable against small changes of input functions. At the same time, it remains discriminative at differentiating input functions. In particular, the main result is that the functional distortion distance between two Reeb graphs is bounded from below by the bottleneck distance between both the ordinary and extended persistence diagrams for appropriate dimensions. As an application of our results, we analyze a natural simplification scheme for Reeb graphs, and show that persistent features in Reeb graph remains persistent under simplification. Understanding the stability of important features of the Reeb graph under simplification is an interesting problem on its own right, and critical to the practical usage of Reeb graphs. Copyright is held by the owner/author(s)."}],"type":"conference","date_published":"2014-06-01T00:00:00Z","publication":"Proceedings of the Annual Symposium on Computational Geometry","citation":{"short":"U. Bauer, X. Ge, Y. Wang, in:, Proceedings of the Annual Symposium on Computational Geometry, ACM, 2014, pp. 464–473.","mla":"Bauer, Ulrich, et al. “Measuring Distance between Reeb Graphs.” Proceedings of the Annual Symposium on Computational Geometry, ACM, 2014, pp. 464–73, doi:10.1145/2582112.2582169.","chicago":"Bauer, Ulrich, Xiaoyin Ge, and Yusu Wang. “Measuring Distance between Reeb Graphs.” In Proceedings of the Annual Symposium on Computational Geometry, 464–73. ACM, 2014. https://doi.org/10.1145/2582112.2582169.","ama":"Bauer U, Ge X, Wang Y. Measuring distance between Reeb graphs. In: Proceedings of the Annual Symposium on Computational Geometry. ACM; 2014:464-473. doi:10.1145/2582112.2582169","ieee":"U. Bauer, X. Ge, and Y. Wang, “Measuring distance between Reeb graphs,” in Proceedings of the Annual Symposium on Computational Geometry, Kyoto, Japan, 2014, pp. 464–473.","apa":"Bauer, U., Ge, X., & Wang, Y. (2014). Measuring distance between Reeb graphs. In Proceedings of the Annual Symposium on Computational Geometry (pp. 464–473). Kyoto, Japan: ACM. https://doi.org/10.1145/2582112.2582169","ista":"Bauer U, Ge X, Wang Y. 2014. Measuring distance between Reeb graphs. Proceedings of the Annual Symposium on Computational Geometry. SoCG: Symposium on Computational Geometry, 464–473."},"page":"464 - 473","day":"01","scopus_import":1},{"ec_funded":1,"publist_id":"4851","date_created":"2018-12-11T11:56:01Z","date_updated":"2021-01-12T06:55:38Z","author":[{"full_name":"Bauer, Ulrich","first_name":"Ulrich","last_name":"Bauer","id":"2ADD483A-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-9683-0724"},{"orcid":"0000-0002-9823-6833","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","last_name":"Edelsbrunner","first_name":"Herbert","full_name":"Edelsbrunner, Herbert"}],"publisher":"ACM","department":[{"_id":"HeEd"}],"publication_status":"published","acknowledgement":"This research is partially supported by ESF under the ACAT Research Network Programme, and by the Russian Government under mega project 11.G34.31.0053","year":"2014","month":"06","language":[{"iso":"eng"}],"doi":"10.1145/2582112.2582167","conference":{"name":"SoCG: Symposium on Computational Geometry","end_date":"2014-06-11","location":"Kyoto, Japan","start_date":"2014-06-08"},"project":[{"grant_number":"318493","_id":"255D761E-B435-11E9-9278-68D0E5697425","name":"Topological Complex Systems","call_identifier":"FP7"}],"quality_controlled":"1","main_file_link":[{"open_access":"1","url":"http://arxiv.org/abs/1312.1231"}],"oa":1,"abstract":[{"text":"Given a finite set of points in Rn and a positive radius, we study the Čech, Delaunay-Čech, alpha, and wrap complexes as instances of a generalized discrete Morse theory. We prove that the latter three complexes are simple-homotopy equivalent. Our results have applications in topological data analysis and in the reconstruction of shapes from sampled data. Copyright is held by the owner/author(s).","lang":"eng"}],"type":"conference","oa_version":"Submitted Version","title":"The morse theory of Čech and Delaunay filtrations","status":"public","_id":"2155","user_id":"4435EBFC-F248-11E8-B48F-1D18A9856A87","day":"01","scopus_import":1,"date_published":"2014-06-01T00:00:00Z","page":"484 - 490","citation":{"short":"U. Bauer, H. Edelsbrunner, in:, Proceedings of the Annual Symposium on Computational Geometry, ACM, 2014, pp. 484–490.","mla":"Bauer, Ulrich, and Herbert Edelsbrunner. “The Morse Theory of Čech and Delaunay Filtrations.” Proceedings of the Annual Symposium on Computational Geometry, ACM, 2014, pp. 484–90, doi:10.1145/2582112.2582167.","chicago":"Bauer, Ulrich, and Herbert Edelsbrunner. “The Morse Theory of Čech and Delaunay Filtrations.” In Proceedings of the Annual Symposium on Computational Geometry, 484–90. ACM, 2014. https://doi.org/10.1145/2582112.2582167.","ama":"Bauer U, Edelsbrunner H. The morse theory of Čech and Delaunay filtrations. In: Proceedings of the Annual Symposium on Computational Geometry. ACM; 2014:484-490. doi:10.1145/2582112.2582167","ieee":"U. Bauer and H. Edelsbrunner, “The morse theory of Čech and Delaunay filtrations,” in Proceedings of the Annual Symposium on Computational Geometry, Kyoto, Japan, 2014, pp. 484–490.","apa":"Bauer, U., & Edelsbrunner, H. (2014). The morse theory of Čech and Delaunay filtrations. In Proceedings of the Annual Symposium on Computational Geometry (pp. 484–490). Kyoto, Japan: ACM. https://doi.org/10.1145/2582112.2582167","ista":"Bauer U, Edelsbrunner H. 2014. The morse theory of Čech and Delaunay filtrations. Proceedings of the Annual Symposium on Computational Geometry. SoCG: Symposium on Computational Geometry, 484–490."},"publication":"Proceedings of the Annual Symposium on Computational Geometry"},{"abstract":[{"text":"We give evidence for the difficulty of computing Betti numbers of simplicial complexes over a finite field. We do this by reducing the rank computation for sparse matrices with to non-zero entries to computing Betti numbers of simplicial complexes consisting of at most a constant times to simplices. Together with the known reduction in the other direction, this implies that the two problems have the same computational complexity.","lang":"eng"}],"publist_id":"4805","type":"conference","author":[{"last_name":"Edelsbrunner","first_name":"Herbert","orcid":"0000-0002-9823-6833","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","full_name":"Edelsbrunner, Herbert"},{"last_name":"Parsa","first_name":"Salman","id":"4BDBD4F2-F248-11E8-B48F-1D18A9856A87","full_name":"Parsa, Salman"}],"date_created":"2018-12-11T11:56:09Z","date_updated":"2021-01-12T06:55:48Z","oa_version":"None","user_id":"4435EBFC-F248-11E8-B48F-1D18A9856A87","_id":"2177","year":"2014","publication_status":"published","title":"On the computational complexity of betti numbers reductions from matrix rank","status":"public","publisher":"SIAM","department":[{"_id":"HeEd"}],"day":"01","month":"01","scopus_import":1,"conference":{"name":"SODA: Symposium on Discrete Algorithms","start_date":"2014-01-05","location":"Portland, USA","end_date":"2014-01-07"},"date_published":"2014-01-01T00:00:00Z","doi":"10.1137/1.9781611973402.11","language":[{"iso":"eng"}],"publication":"Proceedings of the Annual ACM-SIAM Symposium on Discrete Algorithms","citation":{"chicago":"Edelsbrunner, Herbert, and Salman Parsa. “On the Computational Complexity of Betti Numbers Reductions from Matrix Rank.” In Proceedings of the Annual ACM-SIAM Symposium on Discrete Algorithms, 152–60. SIAM, 2014. https://doi.org/10.1137/1.9781611973402.11.","short":"H. Edelsbrunner, S. Parsa, in:, Proceedings of the Annual ACM-SIAM Symposium on Discrete Algorithms, SIAM, 2014, pp. 152–160.","mla":"Edelsbrunner, Herbert, and Salman Parsa. “On the Computational Complexity of Betti Numbers Reductions from Matrix Rank.” Proceedings of the Annual ACM-SIAM Symposium on Discrete Algorithms, SIAM, 2014, pp. 152–60, doi:10.1137/1.9781611973402.11.","apa":"Edelsbrunner, H., & Parsa, S. (2014). On the computational complexity of betti numbers reductions from matrix rank. In Proceedings of the Annual ACM-SIAM Symposium on Discrete Algorithms (pp. 152–160). Portland, USA: SIAM. https://doi.org/10.1137/1.9781611973402.11","ieee":"H. Edelsbrunner and S. Parsa, “On the computational complexity of betti numbers reductions from matrix rank,” in Proceedings of the Annual ACM-SIAM Symposium on Discrete Algorithms, Portland, USA, 2014, pp. 152–160.","ista":"Edelsbrunner H, Parsa S. 2014. On the computational complexity of betti numbers reductions from matrix rank. Proceedings of the Annual ACM-SIAM Symposium on Discrete Algorithms. SODA: Symposium on Discrete Algorithms, 152–160.","ama":"Edelsbrunner H, Parsa S. On the computational complexity of betti numbers reductions from matrix rank. In: Proceedings of the Annual ACM-SIAM Symposium on Discrete Algorithms. SIAM; 2014:152-160. doi:10.1137/1.9781611973402.11"},"quality_controlled":"1","page":"152 - 160"},{"month":"05","language":[{"iso":"eng"}],"doi":"10.1145/2597629","quality_controlled":"1","oa":1,"main_file_link":[{"open_access":"1","url":"http://arxiv.org/abs/1105.6257"}],"publist_id":"4797","article_number":"17 ","volume":61,"date_updated":"2021-01-12T06:55:50Z","date_created":"2018-12-11T11:56:12Z","author":[{"full_name":"Čadek, Martin","first_name":"Martin","last_name":"Čadek"},{"first_name":"Marek","last_name":"Krcál","id":"33E21118-F248-11E8-B48F-1D18A9856A87","full_name":"Krcál, Marek"},{"full_name":"Matoušek, Jiří","first_name":"Jiří","last_name":"Matoušek"},{"last_name":"Sergeraert","first_name":"Francis","full_name":"Sergeraert, Francis"},{"full_name":"Vokřínek, Lukáš","last_name":"Vokřínek","first_name":"Lukáš"},{"first_name":"Uli","last_name":"Wagner","id":"36690CA2-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-1494-0568","full_name":"Wagner, Uli"}],"publisher":"ACM","department":[{"_id":"UlWa"},{"_id":"HeEd"}],"publication_status":"published","acknowledgement":"The research by M. K. was supported by project GAUK 49209. The research by M. K. was also supported by project 1M0545 by the Ministry of Education of the Czech Republic and by Center of Excellence { Inst. for Theor. Comput. Sci., Prague (project P202/12/G061 of GACR). The research by U. W. was supported by the Swiss National Science Foundation (SNF Projects 200021-125309, 200020-138230, and PP00P2-138948).","year":"2014","day":"01","scopus_import":1,"date_published":"2014-05-01T00:00:00Z","citation":{"mla":"Čadek, Martin, et al. “Computing All Maps into a Sphere.” Journal of the ACM, vol. 61, no. 3, 17, ACM, 2014, doi:10.1145/2597629.","short":"M. Čadek, M. Krcál, J. Matoušek, F. Sergeraert, L. Vokřínek, U. Wagner, Journal of the ACM 61 (2014).","chicago":"Čadek, Martin, Marek Krcál, Jiří Matoušek, Francis Sergeraert, Lukáš Vokřínek, and Uli Wagner. “Computing All Maps into a Sphere.” Journal of the ACM. ACM, 2014. https://doi.org/10.1145/2597629.","ama":"Čadek M, Krcál M, Matoušek J, Sergeraert F, Vokřínek L, Wagner U. Computing all maps into a sphere. Journal of the ACM. 2014;61(3). doi:10.1145/2597629","ista":"Čadek M, Krcál M, Matoušek J, Sergeraert F, Vokřínek L, Wagner U. 2014. Computing all maps into a sphere. Journal of the ACM. 61(3), 17.","apa":"Čadek, M., Krcál, M., Matoušek, J., Sergeraert, F., Vokřínek, L., & Wagner, U. (2014). Computing all maps into a sphere. Journal of the ACM. ACM. https://doi.org/10.1145/2597629","ieee":"M. Čadek, M. Krcál, J. Matoušek, F. Sergeraert, L. Vokřínek, and U. Wagner, “Computing all maps into a sphere,” Journal of the ACM, vol. 61, no. 3. ACM, 2014."},"publication":"Journal of the ACM","issue":"3","abstract":[{"lang":"eng","text":"Given topological spaces X,Y, a fundamental problem of algebraic topology is understanding the structure of all continuous maps X→ Y. We consider a computational version, where X,Y are given as finite simplicial complexes, and the goal is to compute [X,Y], that is, all homotopy classes of suchmaps.We solve this problem in the stable range, where for some d ≥ 2, we have dim X ≤ 2d-2 and Y is (d-1)-connected; in particular, Y can be the d-dimensional sphere Sd. The algorithm combines classical tools and ideas from homotopy theory (obstruction theory, Postnikov systems, and simplicial sets) with algorithmic tools from effective algebraic topology (locally effective simplicial sets and objects with effective homology). In contrast, [X,Y] is known to be uncomputable for general X,Y, since for X = S1 it includes a well known undecidable problem: testing triviality of the fundamental group of Y. In follow-up papers, the algorithm is shown to run in polynomial time for d fixed, and extended to other problems, such as the extension problem, where we are given a subspace A ⊂ X and a map A→ Y and ask whether it extends to a map X → Y, or computing the Z2-index-everything in the stable range. Outside the stable range, the extension problem is undecidable."}],"type":"journal_article","oa_version":"Preprint","intvolume":" 61","status":"public","title":"Computing all maps into a sphere","user_id":"4435EBFC-F248-11E8-B48F-1D18A9856A87","_id":"2184"},{"year":"2014","acknowledgement":"This research is partially supported by NSF under grant DBI-0820624, by ESF under the Research Networking Programme, and by the Russian Government Project 11.G34.31.0053.","department":[{"_id":"HeEd"}],"publisher":"European Mathematical Society Publishing House","publication_status":"published","author":[{"orcid":"0000-0002-9823-6833","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","last_name":"Edelsbrunner","first_name":"Herbert","full_name":"Edelsbrunner, Herbert"},{"full_name":"Morozovy, Dmitriy","last_name":"Morozovy","first_name":"Dmitriy"}],"date_created":"2018-12-11T12:00:16Z","date_updated":"2021-01-12T07:00:36Z","publist_id":"3842","file_date_updated":"2020-07-14T12:45:52Z","oa":1,"quality_controlled":"1","doi":"10.4171/120-1/3","conference":{"end_date":"2012-07-07","location":"Kraków, Poland","start_date":"2012-07-02","name":"ECM: European Congress of Mathematics"},"language":[{"iso":"eng"}],"month":"01","_id":"2905","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","title":"Persistent homology: Theory and practice","status":"public","ddc":["000"],"pubrep_id":"544","file":[{"file_id":"5232","relation":"main_file","checksum":"1d4a046f1af945c407c5c4d411d4c5e4","date_created":"2018-12-12T10:16:43Z","date_updated":"2020-07-14T12:45:52Z","access_level":"open_access","file_name":"IST-2016-544-v1+1_2012-P-11-PHTheoryPractice.pdf","creator":"system","content_type":"application/pdf","file_size":435320}],"oa_version":"Submitted Version","type":"conference","abstract":[{"text":"Persistent homology is a recent grandchild of homology that has found use in\r\nscience and engineering as well as in mathematics. This paper surveys the method as well\r\nas the applications, neglecting completeness in favor of highlighting ideas and directions.","lang":"eng"}],"citation":{"ama":"Edelsbrunner H, Morozovy D. Persistent homology: Theory and practice. In: European Mathematical Society Publishing House; 2014:31-50. doi:10.4171/120-1/3","apa":"Edelsbrunner, H., & Morozovy, D. (2014). Persistent homology: Theory and practice (pp. 31–50). Presented at the ECM: European Congress of Mathematics, Kraków, Poland: European Mathematical Society Publishing House. https://doi.org/10.4171/120-1/3","ieee":"H. Edelsbrunner and D. Morozovy, “Persistent homology: Theory and practice,” presented at the ECM: European Congress of Mathematics, Kraków, Poland, 2014, pp. 31–50.","ista":"Edelsbrunner H, Morozovy D. 2014. Persistent homology: Theory and practice. ECM: European Congress of Mathematics, 31–50.","short":"H. Edelsbrunner, D. Morozovy, in:, European Mathematical Society Publishing House, 2014, pp. 31–50.","mla":"Edelsbrunner, Herbert, and Dmitriy Morozovy. Persistent Homology: Theory and Practice. European Mathematical Society Publishing House, 2014, pp. 31–50, doi:10.4171/120-1/3.","chicago":"Edelsbrunner, Herbert, and Dmitriy Morozovy. “Persistent Homology: Theory and Practice,” 31–50. European Mathematical Society Publishing House, 2014. https://doi.org/10.4171/120-1/3."},"page":"31 - 50","date_published":"2014-01-01T00:00:00Z","article_processing_charge":"No","has_accepted_license":"1","day":"01"},{"month":"11","publication_identifier":{"eissn":["1611-3349"],"isbn":["9783319130743"],"issn":["0302-9743"],"eisbn":["9783319130750"]},"conference":{"end_date":"2014-12-17","start_date":"2014-12-15","location":"Jeonju, Korea","name":"ISAAC: International Symposium on Algorithms and Computation"},"doi":"10.1007/978-3-319-13075-0_10","language":[{"iso":"eng"}],"quality_controlled":"1","author":[{"full_name":"Biedl, Therese","first_name":"Therese","last_name":"Biedl"},{"orcid":"0000-0002-8871-5814","id":"4700A070-F248-11E8-B48F-1D18A9856A87","last_name":"Huber","first_name":"Stefan","full_name":"Huber, Stefan"},{"full_name":"Palfrader, Peter","last_name":"Palfrader","first_name":"Peter"}],"related_material":{"record":[{"id":"481","status":"public","relation":"later_version"}]},"date_created":"2022-03-21T07:09:03Z","date_updated":"2023-02-23T12:20:55Z","volume":8889,"acknowledgement":"T. Biedl was supported by NSERC and the Ross and Muriel Cheriton Fellowship. P. Palfrader was supported by Austrian Science Fund (FWF): P25816-N15.","year":"2014","publication_status":"published","publisher":"Springer Nature","department":[{"_id":"HeEd"}],"day":"08","article_processing_charge":"No","scopus_import":"1","date_published":"2014-11-08T00:00:00Z","publication":"25th International Symposium, ISAAC 2014","citation":{"chicago":"Biedl, Therese, Stefan Huber, and Peter Palfrader. “Planar Matchings for Weighted Straight Skeletons.” In 25th International Symposium, ISAAC 2014, 8889:117–27. Springer Nature, 2014. https://doi.org/10.1007/978-3-319-13075-0_10.","short":"T. Biedl, S. Huber, P. Palfrader, in:, 25th International Symposium, ISAAC 2014, Springer Nature, 2014, pp. 117–127.","mla":"Biedl, Therese, et al. “Planar Matchings for Weighted Straight Skeletons.” 25th International Symposium, ISAAC 2014, vol. 8889, Springer Nature, 2014, pp. 117–27, doi:10.1007/978-3-319-13075-0_10.","ieee":"T. Biedl, S. Huber, and P. Palfrader, “Planar matchings for weighted straight skeletons,” in 25th International Symposium, ISAAC 2014, Jeonju, Korea, 2014, vol. 8889, pp. 117–127.","apa":"Biedl, T., Huber, S., & Palfrader, P. (2014). Planar matchings for weighted straight skeletons. In 25th International Symposium, ISAAC 2014 (Vol. 8889, pp. 117–127). Jeonju, Korea: Springer Nature. https://doi.org/10.1007/978-3-319-13075-0_10","ista":"Biedl T, Huber S, Palfrader P. 2014. Planar matchings for weighted straight skeletons. 25th International Symposium, ISAAC 2014. ISAAC: International Symposium on Algorithms and Computation, LNCS, vol. 8889, 117–127.","ama":"Biedl T, Huber S, Palfrader P. Planar matchings for weighted straight skeletons. In: 25th International Symposium, ISAAC 2014. Vol 8889. Springer Nature; 2014:117-127. doi:10.1007/978-3-319-13075-0_10"},"page":"117-127","abstract":[{"text":"In this paper, we introduce planar matchings on directed pseudo-line arrangements, which yield a planar set of pseudo-line segments such that only matching-partners are adjacent. By translating the planar matching problem into a corresponding stable roommates problem we show that such matchings always exist.\r\nUsing our new framework, we establish, for the first time, a complete, rigorous definition of weighted straight skeletons, which are based on a so-called wavefront propagation process. We present a generalized and unified approach to treat structural changes in the wavefront that focuses on the restoration of weak planarity by finding planar matchings.","lang":"eng"}],"type":"conference","alternative_title":["LNCS"],"oa_version":"None","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"10892","title":"Planar matchings for weighted straight skeletons","status":"public","intvolume":" 8889"},{"day":"01","month":"01","publication_identifier":{"eisbn":["9-783-3190-5957-0"],"issn":["2191-530X"],"isbn":["9-783-3190-5956-3"],"eissn":["2191-5318"]},"article_processing_charge":"No","series_title":"SpringerBriefs in Applied Sciences and Technology","scopus_import":"1","language":[{"iso":"eng"}],"date_published":"2014-01-01T00:00:00Z","doi":"10.1007/978-3-319-05957-0","quality_controlled":"1","page":"IX, 110","citation":{"short":"H. Edelsbrunner, A Short Course in Computational Geometry and Topology, 1st ed., Springer Nature, Cham, 2014.","mla":"Edelsbrunner, Herbert. A Short Course in Computational Geometry and Topology. 1st ed., Springer Nature, 2014, doi:10.1007/978-3-319-05957-0.","chicago":"Edelsbrunner, Herbert. A Short Course in Computational Geometry and Topology. 1st ed. SpringerBriefs in Applied Sciences and Technology. Cham: Springer Nature, 2014. https://doi.org/10.1007/978-3-319-05957-0.","ama":"Edelsbrunner H. A Short Course in Computational Geometry and Topology. 1st ed. Cham: Springer Nature; 2014. doi:10.1007/978-3-319-05957-0","ieee":"H. Edelsbrunner, A Short Course in Computational Geometry and Topology, 1st ed. Cham: Springer Nature, 2014.","apa":"Edelsbrunner, H. (2014). A Short Course in Computational Geometry and Topology (1st ed.). Cham: Springer Nature. https://doi.org/10.1007/978-3-319-05957-0","ista":"Edelsbrunner H. 2014. A Short Course in Computational Geometry and Topology 1st ed., Cham: Springer Nature, IX, 110p."},"abstract":[{"text":"This monograph presents a short course in computational geometry and topology. In the first part the book covers Voronoi diagrams and Delaunay triangulations, then it presents the theory of alpha complexes which play a crucial role in biology. The central part of the book is the homology theory and their computation, including the theory of persistence which is indispensable for applications, e.g. shape reconstruction. The target audience comprises researchers and practitioners in mathematics, biology, neuroscience and computer science, but the book may also be beneficial to graduate students of these fields.","lang":"eng"}],"place":"Cham","alternative_title":["SpringerBriefs in Applied Sciences and Technology"],"type":"book","date_created":"2019-09-06T09:22:33Z","date_updated":"2022-03-04T07:47:54Z","oa_version":"None","author":[{"full_name":"Edelsbrunner, Herbert","orcid":"0000-0002-9823-6833","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","last_name":"Edelsbrunner","first_name":"Herbert"}],"edition":"1","related_material":{"link":[{"url":"https://koha.app.ist.ac.at/cgi-bin/koha/opac-detail.pl?biblionumber=356106","description":"available as eBook via catalog IST BookList","relation":"other"},{"relation":"other","description":"available via catalog IST BookList","url":"https://koha.app.ist.ac.at/cgi-bin/koha/opac-detail.pl?biblionumber=373842"}]},"title":"A Short Course in Computational Geometry and Topology","publication_status":"published","status":"public","publisher":"Springer Nature","department":[{"_id":"HeEd"}],"year":"2014","_id":"6853","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87"},{"day":"19","month":"03","article_processing_charge":"No","publication_identifier":{"eissn":["2197-666X"],"isbn":["9783319040981"],"issn":["1612-3786"],"eisbn":["9783319040998"]},"scopus_import":"1","language":[{"iso":"eng"}],"date_published":"2014-03-19T00:00:00Z","doi":"10.1007/978-3-319-04099-8_16","quality_controlled":"1","page":"249-262","publication":"Topological Methods in Data Analysis and Visualization III ","citation":{"short":"V. Zobel, J. Reininghaus, I. Hotz, in:, Topological Methods in Data Analysis and Visualization III , Springer, 2014, pp. 249–262.","mla":"Zobel, Valentin, et al. “Visualization of Two-Dimensional Symmetric Positive Definite Tensor Fields Using the Heat Kernel Signature.” Topological Methods in Data Analysis and Visualization III , Springer, 2014, pp. 249–62, doi:10.1007/978-3-319-04099-8_16.","chicago":"Zobel, Valentin, Jan Reininghaus, and Ingrid Hotz. “Visualization of Two-Dimensional Symmetric Positive Definite Tensor Fields Using the Heat Kernel Signature.” In Topological Methods in Data Analysis and Visualization III , 249–62. Springer, 2014. https://doi.org/10.1007/978-3-319-04099-8_16.","ama":"Zobel V, Reininghaus J, Hotz I. Visualization of two-dimensional symmetric positive definite tensor fields using the heat kernel signature. In: Topological Methods in Data Analysis and Visualization III . Springer; 2014:249-262. doi:10.1007/978-3-319-04099-8_16","ieee":"V. Zobel, J. Reininghaus, and I. Hotz, “Visualization of two-dimensional symmetric positive definite tensor fields using the heat kernel signature,” in Topological Methods in Data Analysis and Visualization III , 2014, pp. 249–262.","apa":"Zobel, V., Reininghaus, J., & Hotz, I. (2014). Visualization of two-dimensional symmetric positive definite tensor fields using the heat kernel signature. In Topological Methods in Data Analysis and Visualization III (pp. 249–262). Springer. https://doi.org/10.1007/978-3-319-04099-8_16","ista":"Zobel V, Reininghaus J, Hotz I. 2014. Visualization of two-dimensional symmetric positive definite tensor fields using the heat kernel signature. Topological Methods in Data Analysis and Visualization III . , Mathematics and Visualization, , 249–262."},"abstract":[{"text":"We propose a method for visualizing two-dimensional symmetric positive definite tensor fields using the Heat Kernel Signature (HKS). The HKS is derived from the heat kernel and was originally introduced as an isometry invariant shape signature. Each positive definite tensor field defines a Riemannian manifold by considering the tensor field as a Riemannian metric. On this Riemmanian manifold we can apply the definition of the HKS. The resulting scalar quantity is used for the visualization of tensor fields. The HKS is closely related to the Gaussian curvature of the Riemannian manifold and the time parameter of the heat kernel allows a multiscale analysis in a natural way. In this way, the HKS represents field related scale space properties, enabling a level of detail analysis of tensor fields. This makes the HKS an interesting new scalar quantity for tensor fields, which differs significantly from usual tensor invariants like the trace or the determinant. A method for visualization and a numerical realization of the HKS for tensor fields is proposed in this chapter. To validate the approach we apply it to some illustrating simple examples as isolated critical points and to a medical diffusion tensor data set.","lang":"eng"}],"alternative_title":["Mathematics and Visualization"],"type":"conference","date_updated":"2023-09-05T14:13:16Z","date_created":"2022-03-18T13:05:39Z","oa_version":"None","author":[{"last_name":"Zobel","first_name":"Valentin","full_name":"Zobel, Valentin"},{"full_name":"Reininghaus, Jan","last_name":"Reininghaus","first_name":"Jan","id":"4505473A-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Hotz","first_name":"Ingrid","full_name":"Hotz, Ingrid"}],"title":"Visualization of two-dimensional symmetric positive definite tensor fields using the heat kernel signature","publication_status":"published","status":"public","department":[{"_id":"HeEd"}],"publisher":"Springer","year":"2014","_id":"10886","acknowledgement":"This research is partially supported by the TOPOSYS project FP7-ICT-318493-STREP.","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1"},{"publisher":"Springer Nature","department":[{"_id":"HeEd"}],"editor":[{"last_name":"Bremer","first_name":"Peer-Timo","full_name":"Bremer, Peer-Timo"},{"full_name":"Hotz, Ingrid","last_name":"Hotz","first_name":"Ingrid"},{"last_name":"Pascucci","first_name":"Valerio","full_name":"Pascucci, Valerio"},{"full_name":"Peikert, Ronald","first_name":"Ronald","last_name":"Peikert"}],"publication_status":"published","year":"2014","acknowledgement":"This research is supported and funded by the Digiteo unTopoVis project, the TOPOSYS project FP7-ICT-318493-STREP, and MPC-VCC.","date_created":"2022-03-04T08:33:57Z","date_updated":"2023-09-05T15:33:45Z","author":[{"first_name":"David","last_name":"Günther","full_name":"Günther, David"},{"full_name":"Reininghaus, Jan","first_name":"Jan","last_name":"Reininghaus","id":"4505473A-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Seidel, Hans-Peter","first_name":"Hans-Peter","last_name":"Seidel"},{"full_name":"Weinkauf, Tino","last_name":"Weinkauf","first_name":"Tino"}],"place":"Cham","ec_funded":1,"project":[{"name":"Topological Complex Systems","call_identifier":"FP7","_id":"255D761E-B435-11E9-9278-68D0E5697425","grant_number":"318493"}],"quality_controlled":"1","language":[{"iso":"eng"}],"doi":"10.1007/978-3-319-04099-8_9","publication_identifier":{"isbn":["9783319040981"],"eissn":["2197-666X"],"issn":["1612-3786"],"eisbn":["9783319040998"]},"month":"03","status":"public","title":"Notes on the simplification of the Morse-Smale complex","_id":"10817","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","oa_version":"None","type":"book_chapter","abstract":[{"lang":"eng","text":"The Morse-Smale complex can be either explicitly or implicitly represented. Depending on the type of representation, the simplification of the Morse-Smale complex works differently. In the explicit representation, the Morse-Smale complex is directly simplified by explicitly reconnecting the critical points during the simplification. In the implicit representation, on the other hand, the Morse-Smale complex is given by a combinatorial gradient field. In this setting, the simplification changes the combinatorial flow, which yields an indirect simplification of the Morse-Smale complex. The topological complexity of the Morse-Smale complex is reduced in both representations. However, the simplifications generally yield different results. In this chapter, we emphasize properties of the two representations that cause these differences. We also provide a complexity analysis of the two schemes with respect to running time and memory consumption."}],"page":"135-150","citation":{"ista":"Günther D, Reininghaus J, Seidel H-P, Weinkauf T. 2014.Notes on the simplification of the Morse-Smale complex. In: Topological Methods in Data Analysis and Visualization III. , 135–150.","apa":"Günther, D., Reininghaus, J., Seidel, H.-P., & Weinkauf, T. (2014). Notes on the simplification of the Morse-Smale complex. In P.-T. Bremer, I. Hotz, V. Pascucci, & R. Peikert (Eds.), Topological Methods in Data Analysis and Visualization III. (pp. 135–150). Cham: Springer Nature. https://doi.org/10.1007/978-3-319-04099-8_9","ieee":"D. Günther, J. Reininghaus, H.-P. Seidel, and T. Weinkauf, “Notes on the simplification of the Morse-Smale complex,” in Topological Methods in Data Analysis and Visualization III., P.-T. Bremer, I. Hotz, V. Pascucci, and R. Peikert, Eds. Cham: Springer Nature, 2014, pp. 135–150.","ama":"Günther D, Reininghaus J, Seidel H-P, Weinkauf T. Notes on the simplification of the Morse-Smale complex. In: Bremer P-T, Hotz I, Pascucci V, Peikert R, eds. Topological Methods in Data Analysis and Visualization III. Mathematics and Visualization. Cham: Springer Nature; 2014:135-150. doi:10.1007/978-3-319-04099-8_9","chicago":"Günther, David, Jan Reininghaus, Hans-Peter Seidel, and Tino Weinkauf. “Notes on the Simplification of the Morse-Smale Complex.” In Topological Methods in Data Analysis and Visualization III., edited by Peer-Timo Bremer, Ingrid Hotz, Valerio Pascucci, and Ronald Peikert, 135–50. Mathematics and Visualization. Cham: Springer Nature, 2014. https://doi.org/10.1007/978-3-319-04099-8_9.","mla":"Günther, David, et al. “Notes on the Simplification of the Morse-Smale Complex.” Topological Methods in Data Analysis and Visualization III., edited by Peer-Timo Bremer et al., Springer Nature, 2014, pp. 135–50, doi:10.1007/978-3-319-04099-8_9.","short":"D. Günther, J. Reininghaus, H.-P. Seidel, T. Weinkauf, in:, P.-T. Bremer, I. Hotz, V. Pascucci, R. Peikert (Eds.), Topological Methods in Data Analysis and Visualization III., Springer Nature, Cham, 2014, pp. 135–150."},"publication":"Topological Methods in Data Analysis and Visualization III.","date_published":"2014-03-19T00:00:00Z","series_title":"Mathematics and Visualization","scopus_import":"1","article_processing_charge":"No","day":"19"},{"publication_identifier":{"issn":["09249907"]},"month":"09","oa":1,"project":[{"_id":"255D761E-B435-11E9-9278-68D0E5697425","grant_number":"318493","call_identifier":"FP7","name":"Topological Complex Systems"}],"quality_controlled":"1","doi":"10.1007/s10851-013-0468-x","language":[{"iso":"eng"}],"publist_id":"4691","ec_funded":1,"file_date_updated":"2020-07-14T12:45:35Z","year":"2014","publisher":"Springer","department":[{"_id":"HeEd"}],"publication_status":"published","related_material":{"record":[{"status":"public","relation":"earlier_version","id":"2843"},{"relation":"dissertation_contains","status":"public","id":"1399"}]},"author":[{"full_name":"Edelsbrunner, Herbert","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-9823-6833","first_name":"Herbert","last_name":"Edelsbrunner"},{"orcid":"0000-0002-8379-3768","id":"2A77D7A2-F248-11E8-B48F-1D18A9856A87","last_name":"Pausinger","first_name":"Florian","full_name":"Pausinger, Florian"}],"volume":50,"date_created":"2018-12-11T11:56:36Z","date_updated":"2023-09-07T11:41:25Z","scopus_import":1,"has_accepted_license":"1","day":"01","citation":{"short":"H. Edelsbrunner, F. Pausinger, Journal of Mathematical Imaging and Vision 50 (2014) 164–177.","mla":"Edelsbrunner, Herbert, and Florian Pausinger. “Stable Length Estimates of Tube-like Shapes.” Journal of Mathematical Imaging and Vision, vol. 50, no. 1, Springer, 2014, pp. 164–77, doi:10.1007/s10851-013-0468-x.","chicago":"Edelsbrunner, Herbert, and Florian Pausinger. “Stable Length Estimates of Tube-like Shapes.” Journal of Mathematical Imaging and Vision. Springer, 2014. https://doi.org/10.1007/s10851-013-0468-x.","ama":"Edelsbrunner H, Pausinger F. Stable length estimates of tube-like shapes. Journal of Mathematical Imaging and Vision. 2014;50(1):164-177. doi:10.1007/s10851-013-0468-x","ieee":"H. Edelsbrunner and F. Pausinger, “Stable length estimates of tube-like shapes,” Journal of Mathematical Imaging and Vision, vol. 50, no. 1. Springer, pp. 164–177, 2014.","apa":"Edelsbrunner, H., & Pausinger, F. (2014). Stable length estimates of tube-like shapes. Journal of Mathematical Imaging and Vision. Springer. https://doi.org/10.1007/s10851-013-0468-x","ista":"Edelsbrunner H, Pausinger F. 2014. Stable length estimates of tube-like shapes. Journal of Mathematical Imaging and Vision. 50(1), 164–177."},"publication":"Journal of Mathematical Imaging and Vision","page":"164 - 177","date_published":"2014-09-01T00:00:00Z","type":"journal_article","issue":"1","abstract":[{"lang":"eng","text":"Motivated by applications in biology, we present an algorithm for estimating the length of tube-like shapes in 3-dimensional Euclidean space. In a first step, we combine the tube formula of Weyl with integral geometric methods to obtain an integral representation of the length, which we approximate using a variant of the Koksma-Hlawka Theorem. In a second step, we use tools from computational topology to decrease the dependence on small perturbations of the shape. We present computational experiments that shed light on the stability and the convergence rate of our algorithm."}],"_id":"2255","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","intvolume":" 50","status":"public","ddc":["000"],"title":"Stable length estimates of tube-like shapes","pubrep_id":"549","file":[{"access_level":"open_access","file_name":"IST-2016-549-v1+1_2014-J-06-LengthEstimate.pdf","content_type":"application/pdf","file_size":3941391,"creator":"system","relation":"main_file","file_id":"5204","checksum":"2f93f3e63a38a85cd4404d7953913b14","date_created":"2018-12-12T10:16:18Z","date_updated":"2020-07-14T12:45:35Z"}],"oa_version":"Submitted Version"},{"publisher":"Springer Berlin Heidelberg","department":[{"_id":"HeEd"}],"publication_status":"published","year":"2014","volume":8592,"date_created":"2022-03-21T07:12:16Z","date_updated":"2023-09-20T09:42:40Z","related_material":{"record":[{"relation":"later_version","status":"public","id":"1433"}]},"author":[{"last_name":"Bauer","first_name":"Ulrich","orcid":"0000-0002-9683-0724","id":"2ADD483A-F248-11E8-B48F-1D18A9856A87","full_name":"Bauer, Ulrich"},{"first_name":"Michael","last_name":"Kerber","full_name":"Kerber, Michael"},{"last_name":"Reininghaus","first_name":"Jan","id":"4505473A-F248-11E8-B48F-1D18A9856A87","full_name":"Reininghaus, Jan"},{"full_name":"Wagner, Hubert","first_name":"Hubert","last_name":"Wagner"}],"place":"Berlin, Heidelberg","quality_controlled":"1","language":[{"iso":"eng"}],"doi":"10.1007/978-3-662-44199-2_24","conference":{"end_date":"2014-08-09","start_date":"2014-08-05","location":"Seoul, South Korea","name":"ICMS: International Congress on Mathematical Software"},"publication_identifier":{"eisbn":["9783662441992"],"issn":["0302-9743"],"isbn":["9783662441985"],"eissn":["1611-3349"]},"month":"09","intvolume":" 8592","title":"PHAT – Persistent Homology Algorithms Toolbox","status":"public","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","_id":"10894","oa_version":"None","type":"conference","abstract":[{"lang":"eng","text":"PHAT is a C++ library for the computation of persistent homology by matrix reduction. We aim for a simple generic design that decouples algorithms from data structures without sacrificing efficiency or user-friendliness. This makes PHAT a versatile platform for experimenting with algorithmic ideas and comparing them to state of the art implementations."}],"page":"137-143","citation":{"ama":"Bauer U, Kerber M, Reininghaus J, Wagner H. PHAT – Persistent Homology Algorithms Toolbox. In: ICMS 2014: International Congress on Mathematical Software. Vol 8592. LNCS. Berlin, Heidelberg: Springer Berlin Heidelberg; 2014:137-143. doi:10.1007/978-3-662-44199-2_24","apa":"Bauer, U., Kerber, M., Reininghaus, J., & Wagner, H. (2014). PHAT – Persistent Homology Algorithms Toolbox. In ICMS 2014: International Congress on Mathematical Software (Vol. 8592, pp. 137–143). Berlin, Heidelberg: Springer Berlin Heidelberg. https://doi.org/10.1007/978-3-662-44199-2_24","ieee":"U. Bauer, M. Kerber, J. Reininghaus, and H. Wagner, “PHAT – Persistent Homology Algorithms Toolbox,” in ICMS 2014: International Congress on Mathematical Software, Seoul, South Korea, 2014, vol. 8592, pp. 137–143.","ista":"Bauer U, Kerber M, Reininghaus J, Wagner H. 2014. PHAT – Persistent Homology Algorithms Toolbox. ICMS 2014: International Congress on Mathematical Software. ICMS: International Congress on Mathematical SoftwareLNCS vol. 8592, 137–143.","short":"U. Bauer, M. Kerber, J. Reininghaus, H. Wagner, in:, ICMS 2014: International Congress on Mathematical Software, Springer Berlin Heidelberg, Berlin, Heidelberg, 2014, pp. 137–143.","mla":"Bauer, Ulrich, et al. “PHAT – Persistent Homology Algorithms Toolbox.” ICMS 2014: International Congress on Mathematical Software, vol. 8592, Springer Berlin Heidelberg, 2014, pp. 137–43, doi:10.1007/978-3-662-44199-2_24.","chicago":"Bauer, Ulrich, Michael Kerber, Jan Reininghaus, and Hubert Wagner. “PHAT – Persistent Homology Algorithms Toolbox.” In ICMS 2014: International Congress on Mathematical Software, 8592:137–43. LNCS. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. https://doi.org/10.1007/978-3-662-44199-2_24."},"publication":"ICMS 2014: International Congress on Mathematical Software","date_published":"2014-09-01T00:00:00Z","series_title":"LNCS","scopus_import":"1","article_processing_charge":"No","day":"01"},{"department":[{"_id":"HeEd"},{"_id":"CaUh"}],"title":"Sphere packing with limited overlap","publication_status":"submitted","status":"public","acknowledgement":"We thank Herbert Edelsbrunner for his valuable discussions and ideas on the topic of this paper. The second author has been supported by the Max Planck Center for Visual Computing and Communication","_id":"2012","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","year":"2014","oa_version":"Submitted Version","date_created":"2018-12-11T11:55:12Z","date_updated":"2023-10-18T08:06:45Z","author":[{"full_name":"Iglesias Ham, Mabel","first_name":"Mabel","last_name":"Iglesias Ham","id":"41B58C0C-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Kerber, Michael","orcid":"0000-0002-8030-9299","last_name":"Kerber","first_name":"Michael"},{"full_name":"Uhler, Caroline","last_name":"Uhler","first_name":"Caroline","orcid":"0000-0002-7008-0216","id":"49ADD78E-F248-11E8-B48F-1D18A9856A87"}],"type":"preprint","article_number":"1401.0468","publist_id":"5064","abstract":[{"lang":"eng","text":"The classical sphere packing problem asks for the best (infinite) arrangement of non-overlapping unit balls which cover as much space as possible. We define a generalized version of the problem, where we allow each ball a limited amount of overlap with other balls. We study two natural choices of overlap measures and obtain the optimal lattice packings in a parameterized family of lattices which contains the FCC, BCC, and integer lattice."}],"main_file_link":[{"url":"http://cccg.ca/proceedings/2014/papers/paper23.pdf","open_access":"1"}],"citation":{"ista":"Iglesias Ham M, Kerber M, Uhler C. Sphere packing with limited overlap. arXiv, 1401.0468.","ieee":"M. Iglesias Ham, M. Kerber, and C. Uhler, “Sphere packing with limited overlap,” arXiv. .","apa":"Iglesias Ham, M., Kerber, M., & Uhler, C. (n.d.). Sphere packing with limited overlap. arXiv. https://doi.org/10.48550/arXiv.1401.0468","ama":"Iglesias Ham M, Kerber M, Uhler C. Sphere packing with limited overlap. arXiv. doi:10.48550/arXiv.1401.0468","chicago":"Iglesias Ham, Mabel, Michael Kerber, and Caroline Uhler. “Sphere Packing with Limited Overlap.” ArXiv, n.d. https://doi.org/10.48550/arXiv.1401.0468.","mla":"Iglesias Ham, Mabel, et al. “Sphere Packing with Limited Overlap.” ArXiv, 1401.0468, doi:10.48550/arXiv.1401.0468.","short":"M. Iglesias Ham, M. Kerber, C. Uhler, ArXiv (n.d.)."},"external_id":{"arxiv":["1401.0468"]},"oa":1,"publication":"arXiv","language":[{"iso":"eng"}],"date_published":"2014-01-01T00:00:00Z","doi":"10.48550/arXiv.1401.0468","article_processing_charge":"No","month":"01","day":"01"},{"alternative_title":["2013 10th International Symposium on Voronoi Diagrams in Science and Engineering (ISVD 2013) "],"type":"conference","abstract":[{"text":"A straight skeleton is a well-known geometric structure, and several algorithms exist to construct the straight skeleton for a given polygon or planar straight-line graph. In this paper, we ask the reverse question: Given the straight skeleton (in form of a planar straight-line graph, with some rays to infinity), can we reconstruct a planar straight-line graph for which this was the straight skeleton? We show how to reduce this problem to the problem of finding a line that intersects a set of convex polygons. We can find these convex polygons and all such lines in $O(nlog n)$ time in the Real RAM computer model, where $n$ denotes the number of edges of the input graph. We also explain how our approach can be used for recognizing Voronoi diagrams of points, thereby completing a partial solution provided by Ash and Bolker in 1985.\r\n","lang":"eng"}],"publist_id":"4763","status":"public","publication_status":"published","title":"Recognizing straight skeletons and Voronoi diagrams and reconstructing their input","publisher":"IEEE","department":[{"_id":"HeEd"}],"_id":"2209","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","year":"2013","date_created":"2018-12-11T11:56:20Z","date_updated":"2021-01-12T06:56:00Z","oa_version":"None","author":[{"full_name":"Biedl, Therese","last_name":"Biedl","first_name":"Therese"},{"full_name":"Held, Martin","first_name":"Martin","last_name":"Held"},{"orcid":"0000-0002-8871-5814","id":"4700A070-F248-11E8-B48F-1D18A9856A87","last_name":"Huber","first_name":"Stefan","full_name":"Huber, Stefan"}],"scopus_import":1,"day":"01","month":"12","publication_identifier":{"eisbn":["978-0-7695-5037-4 "]},"quality_controlled":"1","page":"37 - 46","citation":{"ista":"Biedl T, Held M, Huber S. 2013. 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Huber, in:, IEEE, 2013, pp. 37–46."},"language":[{"iso":"eng"}],"conference":{"start_date":"2013-07-08","location":"St. Petersburg, Russia","end_date":"2013-07-10","name":"ISVD: Voronoi Diagrams in Science and Engineering"},"doi":"10.1109/ISVD.2013.11","date_published":"2013-12-01T00:00:00Z"},{"day":"01","month":"03","language":[{"iso":"eng"}],"conference":{"start_date":"2013-03-17","location":"Braunschweig, Germany","end_date":"2013-03-20","name":"EuroCG: European Workshop on Computational Geometry"},"date_published":"2013-03-01T00:00:00Z","page":"95 - 98","publication":"29th European Workshop on Computational Geometry","citation":{"mla":"Biedl, Therese, et al. “Reconstructing Polygons from Embedded Straight Skeletons.” 29th European Workshop on Computational Geometry, TU Braunschweig, 2013, pp. 95–98.","short":"T. Biedl, M. Held, S. Huber, in:, 29th European Workshop on Computational Geometry, TU Braunschweig, 2013, pp. 95–98.","chicago":"Biedl, Therese, Martin Held, and Stefan Huber. “Reconstructing Polygons from Embedded Straight Skeletons.” In 29th European Workshop on Computational Geometry, 95–98. TU Braunschweig, 2013.","ama":"Biedl T, Held M, Huber S. Reconstructing polygons from embedded straight skeletons. In: 29th European Workshop on Computational Geometry. TU Braunschweig; 2013:95-98.","ista":"Biedl T, Held M, Huber S. 2013. Reconstructing polygons from embedded straight skeletons. 29th European Workshop on Computational Geometry. EuroCG: European Workshop on Computational Geometry, 95–98.","ieee":"T. Biedl, M. Held, and S. Huber, “Reconstructing polygons from embedded straight skeletons,” in 29th European Workshop on Computational Geometry, Braunschweig, Germany, 2013, pp. 95–98.","apa":"Biedl, T., Held, M., & Huber, S. (2013). Reconstructing polygons from embedded straight skeletons. In 29th European Workshop on Computational Geometry (pp. 95–98). Braunschweig, Germany: TU Braunschweig."},"main_file_link":[{"open_access":"1","url":"http://www.ibr.cs.tu-bs.de/alg/eurocg13/booklet_eurocg13.pdf"}],"oa":1,"abstract":[{"lang":"eng","text":"A straight skeleton is a well-known geometric structure, and several algorithms exist to construct the straight skeleton for a given polygon. In this paper, we ask the reverse question: Given the straight skeleton (in form of a tree with a drawing in the plane, but with the exact position of the leaves unspecified), can we reconstruct the polygon? We show that in most cases there exists at most one polygon; in the remaining case there is an infinite number of polygons determined by one angle that can range in an interval. We can find this (set of) polygon(s) in linear time in the Real RAM computer model."}],"publist_id":"4762","type":"conference","date_updated":"2021-01-12T06:56:00Z","date_created":"2018-12-11T11:56:21Z","oa_version":"Submitted Version","author":[{"full_name":"Biedl, Therese","last_name":"Biedl","first_name":"Therese"},{"full_name":"Held, Martin","first_name":"Martin","last_name":"Held"},{"first_name":"Stefan","last_name":"Huber","id":"4700A070-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-8871-5814","full_name":"Huber, Stefan"}],"title":"Reconstructing polygons from embedded straight skeletons","publication_status":"published","status":"public","publisher":"TU Braunschweig","department":[{"_id":"HeEd"}],"_id":"2210","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","year":"2013"},{"publication_status":"published","title":"Van der Corput sequences and linear permutations","status":"public","intvolume":" 43","department":[{"_id":"HeEd"}],"publisher":"Elsevier","_id":"2304","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","year":"2013","acknowledgement":"This research is supported by the Graduate school of IST Austria (Institute of Science and Technology Austria).","date_created":"2018-12-11T11:56:53Z","date_updated":"2021-01-12T06:56:39Z","volume":43,"oa_version":"None","author":[{"first_name":"Florian","last_name":"Pausinger","id":"2A77D7A2-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-8379-3768","full_name":"Pausinger, Florian"}],"type":"journal_article","abstract":[{"lang":"eng","text":"This extended abstract is concerned with the irregularities of distribution of one-dimensional permuted van der Corput sequences that are generated from linear permutations. We show how to obtain upper bounds for the discrepancy and diaphony of these sequences, by relating them to Kronecker sequences and applying earlier results of Faure and Niederreiter."}],"publist_id":"4623","quality_controlled":"1","page":"43 - 50","publication":"Electronic Notes in Discrete Mathematics","citation":{"ieee":"F. Pausinger, “Van der Corput sequences and linear permutations,” Electronic Notes in Discrete Mathematics, vol. 43. Elsevier, pp. 43–50, 2013.","apa":"Pausinger, F. (2013). Van der Corput sequences and linear permutations. Electronic Notes in Discrete Mathematics. Elsevier. https://doi.org/10.1016/j.endm.2013.07.008","ista":"Pausinger F. 2013. Van der Corput sequences and linear permutations. Electronic Notes in Discrete Mathematics. 43, 43–50.","ama":"Pausinger F. Van der Corput sequences and linear permutations. Electronic Notes in Discrete Mathematics. 2013;43:43-50. doi:10.1016/j.endm.2013.07.008","chicago":"Pausinger, Florian. “Van Der Corput Sequences and Linear Permutations.” Electronic Notes in Discrete Mathematics. Elsevier, 2013. https://doi.org/10.1016/j.endm.2013.07.008.","short":"F. Pausinger, Electronic Notes in Discrete Mathematics 43 (2013) 43–50.","mla":"Pausinger, Florian. “Van Der Corput Sequences and Linear Permutations.” Electronic Notes in Discrete Mathematics, vol. 43, Elsevier, 2013, pp. 43–50, doi:10.1016/j.endm.2013.07.008."},"language":[{"iso":"eng"}],"doi":"10.1016/j.endm.2013.07.008","date_published":"2013-09-05T00:00:00Z","scopus_import":1,"month":"09","day":"05"},{"doi":"10.1145/2488608.2488683","conference":{"name":"STOC: Symposium on the Theory of Computing","end_date":"2013-06-04","location":"Palo Alto, CA, United States","start_date":"2013-06-01"},"language":[{"iso":"eng"}],"oa":1,"quality_controlled":"1","month":"06","author":[{"full_name":"Čadek, Martin","first_name":"Martin","last_name":"Čadek"},{"full_name":"Krcál, Marek","last_name":"Krcál","first_name":"Marek","id":"33E21118-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Jiří","last_name":"Matoušek","full_name":"Matoušek, Jiří"},{"full_name":"Vokřínek, Lukáš","last_name":"Vokřínek","first_name":"Lukáš"},{"full_name":"Wagner, Uli","last_name":"Wagner","first_name":"Uli","orcid":"0000-0002-1494-0568","id":"36690CA2-F248-11E8-B48F-1D18A9856A87"}],"date_created":"2018-12-11T11:59:42Z","date_updated":"2021-01-12T06:59:51Z","year":"2013","publisher":"ACM","department":[{"_id":"UlWa"},{"_id":"HeEd"}],"publication_status":"published","publist_id":"4078","file_date_updated":"2020-07-14T12:45:48Z","date_published":"2013-06-01T00:00:00Z","citation":{"apa":"Čadek, M., Krcál, M., Matoušek, J., Vokřínek, L., & Wagner, U. (2013). Extending continuous maps: Polynomiality and undecidability. In 45th Annual ACM Symposium on theory of computing (pp. 595–604). Palo Alto, CA, United States: ACM. https://doi.org/10.1145/2488608.2488683","ieee":"M. Čadek, M. Krcál, J. Matoušek, L. Vokřínek, and U. Wagner, “Extending continuous maps: Polynomiality and undecidability,” in 45th Annual ACM Symposium on theory of computing, Palo Alto, CA, United States, 2013, pp. 595–604.","ista":"Čadek M, Krcál M, Matoušek J, Vokřínek L, Wagner U. 2013. Extending continuous maps: Polynomiality and undecidability. 45th Annual ACM Symposium on theory of computing. STOC: Symposium on the Theory of Computing, 595–604.","ama":"Čadek M, Krcál M, Matoušek J, Vokřínek L, Wagner U. Extending continuous maps: Polynomiality and undecidability. In: 45th Annual ACM Symposium on Theory of Computing. ACM; 2013:595-604. doi:10.1145/2488608.2488683","chicago":"Čadek, Martin, Marek Krcál, Jiří Matoušek, Lukáš Vokřínek, and Uli Wagner. “Extending Continuous Maps: Polynomiality and Undecidability.” In 45th Annual ACM Symposium on Theory of Computing, 595–604. ACM, 2013. https://doi.org/10.1145/2488608.2488683.","short":"M. Čadek, M. Krcál, J. Matoušek, L. Vokřínek, U. Wagner, in:, 45th Annual ACM Symposium on Theory of Computing, ACM, 2013, pp. 595–604.","mla":"Čadek, Martin, et al. “Extending Continuous Maps: Polynomiality and Undecidability.” 45th Annual ACM Symposium on Theory of Computing, ACM, 2013, pp. 595–604, doi:10.1145/2488608.2488683."},"publication":"45th Annual ACM Symposium on theory of computing","page":"595 - 604","has_accepted_license":"1","day":"01","scopus_import":1,"pubrep_id":"533","oa_version":"Submitted Version","file":[{"access_level":"open_access","file_name":"IST-2016-533-v1+1_Extending_continuous_maps_polynomiality_and_undecidability.pdf","file_size":447945,"content_type":"application/pdf","creator":"system","relation":"main_file","file_id":"5081","checksum":"06c2ce5c1135fbc1f71ca15eeb242dcf","date_updated":"2020-07-14T12:45:48Z","date_created":"2018-12-12T10:14:29Z"}],"_id":"2807","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","title":"Extending continuous maps: Polynomiality and undecidability","ddc":["510"],"status":"public","abstract":[{"lang":"eng","text":"We consider several basic problems of algebraic topology, with connections to combinatorial and geometric questions, from the point of view of computational complexity. The extension problem asks, given topological spaces X; Y , a subspace A ⊆ X, and a (continuous) map f : A → Y , whether f can be extended to a map X → Y . For computational purposes, we assume that X and Y are represented as finite simplicial complexes, A is a subcomplex of X, and f is given as a simplicial map. In this generality the problem is undecidable, as follows from Novikov's result from the 1950s on uncomputability of the fundamental group π1(Y ). We thus study the problem under the assumption that, for some k ≥ 2, Y is (k - 1)-connected; informally, this means that Y has \\no holes up to dimension k-1" (a basic example of such a Y is the sphere Sk). We prove that, on the one hand, this problem is still undecidable for dimX = 2k. On the other hand, for every fixed k ≥ 2, we obtain an algorithm that solves the extension problem in polynomial time assuming Y (k - 1)-connected and dimX ≤ 2k - 1. For dimX ≤ 2k - 2, the algorithm also provides a classification of all extensions up to homotopy (continuous deformation). This relies on results of our SODA 2012 paper, and the main new ingredient is a machinery of objects with polynomial-time homology, which is a polynomial-time analog of objects with effective homology developed earlier by Sergeraert et al. We also consider the computation of the higher homotopy groups πk(Y ), k ≥ 2, for a 1-connected Y . Their computability was established by Brown in 1957; we show that πk(Y ) can be computed in polynomial time for every fixed k ≥ 2. On the other hand, Anick proved in 1989 that computing πk(Y ) is #P-hard if k is a part of input, where Y is a cell complex with certain rather compact encoding. We strengthen his result to #P-hardness for Y given as a simplicial complex. "}],"type":"conference"},{"day":"01","month":"06","scopus_import":1,"language":[{"iso":"eng"}],"conference":{"name":"SoCG: Symposium on Computational Geometry","location":"Rio de Janeiro, Brazil","start_date":"2013-06-17","end_date":"2013-06-20"},"date_published":"2013-06-01T00:00:00Z","doi":"10.1145/2462356.2462373","quality_controlled":"1","page":"117 - 125","publication":"Proceedings of the 29th annual symposium on Computational Geometry","oa":1,"main_file_link":[{"open_access":"1","url":"http://hal.archives-ouvertes.fr/hal-00833791/"}],"citation":{"ista":"Attali D, Bauer U, Devillers O, Glisse M, Lieutier A. 2013. Homological reconstruction and simplification in R3. Proceedings of the 29th annual symposium on Computational Geometry. SoCG: Symposium on Computational Geometry, 117–125.","apa":"Attali, D., Bauer, U., Devillers, O., Glisse, M., & Lieutier, A. (2013). Homological reconstruction and simplification in R3. In Proceedings of the 29th annual symposium on Computational Geometry (pp. 117–125). Rio de Janeiro, Brazil: ACM. https://doi.org/10.1145/2462356.2462373","ieee":"D. Attali, U. Bauer, O. Devillers, M. Glisse, and A. Lieutier, “Homological reconstruction and simplification in R3,” in Proceedings of the 29th annual symposium on Computational Geometry, Rio de Janeiro, Brazil, 2013, pp. 117–125.","ama":"Attali D, Bauer U, Devillers O, Glisse M, Lieutier A. Homological reconstruction and simplification in R3. In: Proceedings of the 29th Annual Symposium on Computational Geometry. ACM; 2013:117-125. doi:10.1145/2462356.2462373","chicago":"Attali, Dominique, Ulrich Bauer, Olivier Devillers, Marc Glisse, and André Lieutier. “Homological Reconstruction and Simplification in R3.” In Proceedings of the 29th Annual Symposium on Computational Geometry, 117–25. ACM, 2013. https://doi.org/10.1145/2462356.2462373.","mla":"Attali, Dominique, et al. “Homological Reconstruction and Simplification in R3.” Proceedings of the 29th Annual Symposium on Computational Geometry, ACM, 2013, pp. 117–25, doi:10.1145/2462356.2462373.","short":"D. Attali, U. Bauer, O. Devillers, M. Glisse, A. Lieutier, in:, Proceedings of the 29th Annual Symposium on Computational Geometry, ACM, 2013, pp. 117–125."},"abstract":[{"text":"We consider the problem of deciding whether the persistent homology group of a simplicial pair (K, L) can be realized as the homology H* (X) of some complex X with L ⊂ X ⊂ K. We show that this problem is NP-complete even if K is embedded in ℝ3. As a consequence, we show that it is NP-hard to simplify level and sublevel sets of scalar functions on S3 within a given tolerance constraint. This problem has relevance to the visualization of medical images by isosurfaces. We also show an implication to the theory of well groups of scalar functions: not every well group can be realized by some level set, and deciding whether a well group can be realized is NP-hard.","lang":"eng"}],"publist_id":"4072","type":"conference","date_created":"2018-12-11T11:59:44Z","date_updated":"2023-02-23T10:15:15Z","oa_version":"Submitted Version","author":[{"full_name":"Attali, Dominique","last_name":"Attali","first_name":"Dominique"},{"full_name":"Bauer, Ulrich","orcid":"0000-0002-9683-0724","id":"2ADD483A-F248-11E8-B48F-1D18A9856A87","last_name":"Bauer","first_name":"Ulrich"},{"full_name":"Devillers, Olivier","last_name":"Devillers","first_name":"Olivier"},{"last_name":"Glisse","first_name":"Marc","full_name":"Glisse, Marc"},{"full_name":"Lieutier, André","last_name":"Lieutier","first_name":"André"}],"related_material":{"record":[{"status":"public","relation":"later_version","id":"1805"}]},"publication_status":"published","title":"Homological reconstruction and simplification in R3","status":"public","publisher":"ACM","department":[{"_id":"HeEd"}],"_id":"2812","acknowledgement":"Some of the authors were partially supported by the GIGA ANR grant (contract ANR-09-BLAN-0331-01) and the European project CG-Learning (contract 255827).","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","year":"2013"},{"page":"E1695 - E1704","publication":"PNAS","citation":{"short":"C. Topp, A. Iyer Pascuzzi, J. Anderson, C. Lee, P. Zurek, O. Symonova, Y. Zheng, A. Bucksch, Y. Mileyko, T. Galkovskyi, B. Moore, J. Harer, H. Edelsbrunner, T. Mitchell Olds, J. Weitz, P. Benfey, PNAS 110 (2013) E1695–E1704.","mla":"Topp, Christopher, et al. “3D Phenotyping and Quantitative Trait Locus Mapping Identify Core Regions of the Rice Genome Controlling Root Architecture.” PNAS, vol. 110, no. 18, National Academy of Sciences, 2013, pp. E1695–704, doi:10.1073/pnas.1304354110.","chicago":"Topp, Christopher, Anjali Iyer Pascuzzi, Jill Anderson, Cheng Lee, Paul Zurek, Olga Symonova, Ying Zheng, et al. “3D Phenotyping and Quantitative Trait Locus Mapping Identify Core Regions of the Rice Genome Controlling Root Architecture.” PNAS. National Academy of Sciences, 2013. https://doi.org/10.1073/pnas.1304354110.","ama":"Topp C, Iyer Pascuzzi A, Anderson J, et al. 3D phenotyping and quantitative trait locus mapping identify core regions of the rice genome controlling root architecture. PNAS. 2013;110(18):E1695-E1704. doi:10.1073/pnas.1304354110","ieee":"C. Topp et al., “3D phenotyping and quantitative trait locus mapping identify core regions of the rice genome controlling root architecture,” PNAS, vol. 110, no. 18. National Academy of Sciences, pp. E1695–E1704, 2013.","apa":"Topp, C., Iyer Pascuzzi, A., Anderson, J., Lee, C., Zurek, P., Symonova, O., … Benfey, P. (2013). 3D phenotyping and quantitative trait locus mapping identify core regions of the rice genome controlling root architecture. PNAS. National Academy of Sciences. https://doi.org/10.1073/pnas.1304354110","ista":"Topp C, Iyer Pascuzzi A, Anderson J, Lee C, Zurek P, Symonova O, Zheng Y, Bucksch A, Mileyko Y, Galkovskyi T, Moore B, Harer J, Edelsbrunner H, Mitchell Olds T, Weitz J, Benfey P. 2013. 3D phenotyping and quantitative trait locus mapping identify core regions of the rice genome controlling root architecture. PNAS. 110(18), E1695–E1704."},"date_published":"2013-04-30T00:00:00Z","scopus_import":1,"day":"30","title":"3D phenotyping and quantitative trait locus mapping identify core regions of the rice genome controlling root architecture","status":"public","intvolume":" 110","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"2822","oa_version":"Submitted Version","type":"journal_article","abstract":[{"lang":"eng","text":"Identification of genes that control root system architecture in crop plants requires innovations that enable high-throughput and accurate measurements of root system architecture through time. We demonstrate the ability of a semiautomated 3D in vivo imaging and digital phenotyping pipeline to interrogate the quantitative genetic basis of root system growth in a rice biparental mapping population, Bala x Azucena. We phenotyped >1,400 3D root models and >57,000 2D images for a suite of 25 traits that quantified the distribution, shape, extent of exploration, and the intrinsic size of root networks at days 12, 14, and 16 of growth in a gellan gum medium. From these data we identified 89 quantitative trait loci, some of which correspond to those found previously in soil-grown plants, and provide evidence for genetic tradeoffs in root growth allocations, such as between the extent and thoroughness of exploration. We also developed a multivariate method for generating and mapping central root architecture phenotypes and used it to identify five major quantitative trait loci (r2 = 24-37%), two of which were not identified by our univariate analysis. Our imaging and analytical platform provides a means to identify genes with high potential for improving root traits and agronomic qualities of crops."}],"issue":"18","quality_controlled":"1","oa":1,"external_id":{"pmid":["25673779"]},"main_file_link":[{"url":"http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4378147/","open_access":"1"}],"language":[{"iso":"eng"}],"doi":"10.1073/pnas.1304354110","month":"04","publication_status":"published","publisher":"National Academy of Sciences","department":[{"_id":"MaJö"},{"_id":"HeEd"}],"year":"2013","pmid":1,"date_updated":"2021-01-12T06:59:58Z","date_created":"2018-12-11T11:59:47Z","volume":110,"author":[{"full_name":"Topp, Christopher","last_name":"Topp","first_name":"Christopher"},{"first_name":"Anjali","last_name":"Iyer Pascuzzi","full_name":"Iyer Pascuzzi, Anjali"},{"last_name":"Anderson","first_name":"Jill","full_name":"Anderson, Jill"},{"first_name":"Cheng","last_name":"Lee","full_name":"Lee, Cheng"},{"full_name":"Zurek, Paul","last_name":"Zurek","first_name":"Paul"},{"id":"3C0C7BC6-F248-11E8-B48F-1D18A9856A87","first_name":"Olga","last_name":"Symonova","full_name":"Symonova, Olga"},{"last_name":"Zheng","first_name":"Ying","full_name":"Zheng, Ying"},{"full_name":"Bucksch, Alexander","first_name":"Alexander","last_name":"Bucksch"},{"full_name":"Mileyko, Yuriy","last_name":"Mileyko","first_name":"Yuriy"},{"first_name":"Taras","last_name":"Galkovskyi","full_name":"Galkovskyi, Taras"},{"last_name":"Moore","first_name":"Brad","full_name":"Moore, Brad"},{"full_name":"Harer, John","first_name":"John","last_name":"Harer"},{"last_name":"Edelsbrunner","first_name":"Herbert","orcid":"0000-0002-9823-6833","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","full_name":"Edelsbrunner, Herbert"},{"full_name":"Mitchell Olds, Thomas","first_name":"Thomas","last_name":"Mitchell Olds"},{"full_name":"Weitz, Joshua","first_name":"Joshua","last_name":"Weitz"},{"full_name":"Benfey, Philip","first_name":"Philip","last_name":"Benfey"}],"publist_id":"3979"},{"quality_controlled":"1","page":"XV - XIX","publication":"17th IAPR International Conference on Discrete Geometry for Computer Imagery","citation":{"chicago":"Edelsbrunner, Herbert, and Florian Pausinger. “Stable Length Estimates of Tube-like Shapes.” In 17th IAPR International Conference on Discrete Geometry for Computer Imagery, 7749:XV–XIX. Springer, 2013. https://doi.org/10.1007/978-3-642-37067-0.","short":"H. Edelsbrunner, F. Pausinger, in:, 17th IAPR International Conference on Discrete Geometry for Computer Imagery, Springer, 2013, pp. XV–XIX.","mla":"Edelsbrunner, Herbert, and Florian Pausinger. “Stable Length Estimates of Tube-like Shapes.” 17th IAPR International Conference on Discrete Geometry for Computer Imagery, vol. 7749, Springer, 2013, pp. XV–XIX, doi:10.1007/978-3-642-37067-0.","apa":"Edelsbrunner, H., & Pausinger, F. (2013). Stable length estimates of tube-like shapes. In 17th IAPR International Conference on Discrete Geometry for Computer Imagery (Vol. 7749, pp. XV–XIX). Seville, Spain: Springer. https://doi.org/10.1007/978-3-642-37067-0","ieee":"H. Edelsbrunner and F. Pausinger, “Stable length estimates of tube-like shapes,” in 17th IAPR International Conference on Discrete Geometry for Computer Imagery, Seville, Spain, 2013, vol. 7749, pp. XV–XIX.","ista":"Edelsbrunner H, Pausinger F. 2013. Stable length estimates of tube-like shapes. 17th IAPR International Conference on Discrete Geometry for Computer Imagery. DGCI: Discrete Geometry for Computer Imagery, LNCS, vol. 7749, XV–XIX.","ama":"Edelsbrunner H, Pausinger F. Stable length estimates of tube-like shapes. In: 17th IAPR International Conference on Discrete Geometry for Computer Imagery. Vol 7749. Springer; 2013:XV-XIX. doi:10.1007/978-3-642-37067-0"},"language":[{"iso":"eng"}],"conference":{"name":"DGCI: Discrete Geometry for Computer Imagery","location":"Seville, Spain","start_date":"2013-03-20","end_date":"2013-03-22"},"date_published":"2013-02-21T00:00:00Z","doi":"10.1007/978-3-642-37067-0","scopus_import":1,"month":"02","day":"21","status":"public","publication_status":"published","title":"Stable length estimates of tube-like shapes","department":[{"_id":"HeEd"}],"intvolume":" 7749","publisher":"Springer","_id":"2843","year":"2013","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_created":"2018-12-11T11:59:53Z","date_updated":"2023-02-23T10:35:00Z","volume":7749,"oa_version":"None","author":[{"first_name":"Herbert","last_name":"Edelsbrunner","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-9823-6833","full_name":"Edelsbrunner, Herbert"},{"full_name":"Pausinger, Florian","last_name":"Pausinger","first_name":"Florian","orcid":"0000-0002-8379-3768","id":"2A77D7A2-F248-11E8-B48F-1D18A9856A87"}],"related_material":{"record":[{"id":"2255","status":"public","relation":"later_version"}]},"alternative_title":["LNCS"],"type":"conference","abstract":[{"lang":"eng","text":"Mathematical objects can be measured unambiguously, but not so objects from our physical world. Even the total length of tubelike shapes has its difficulties. We introduce a combination of geometric, probabilistic, and topological methods to design a stable length estimate for tube-like shapes; that is: one that is insensitive to small shape changes."}],"publist_id":"3952"},{"day":"01","scopus_import":1,"date_published":"2013-05-01T00:00:00Z","page":"51 - 72","citation":{"ista":"Bendich P, Edelsbrunner H, Morozov D, Patel A. 2013. Homology and robustness of level and interlevel sets. Homology, Homotopy and Applications. 15(1), 51–72.","apa":"Bendich, P., Edelsbrunner, H., Morozov, D., & Patel, A. (2013). Homology and robustness of level and interlevel sets. Homology, Homotopy and Applications. International Press. https://doi.org/10.4310/HHA.2013.v15.n1.a3","ieee":"P. Bendich, H. Edelsbrunner, D. Morozov, and A. Patel, “Homology and robustness of level and interlevel sets,” Homology, Homotopy and Applications, vol. 15, no. 1. International Press, pp. 51–72, 2013.","ama":"Bendich P, Edelsbrunner H, Morozov D, Patel A. Homology and robustness of level and interlevel sets. Homology, Homotopy and Applications. 2013;15(1):51-72. doi:10.4310/HHA.2013.v15.n1.a3","chicago":"Bendich, Paul, Herbert Edelsbrunner, Dmitriy Morozov, and Amit Patel. “Homology and Robustness of Level and Interlevel Sets.” Homology, Homotopy and Applications. International Press, 2013. https://doi.org/10.4310/HHA.2013.v15.n1.a3.","mla":"Bendich, Paul, et al. “Homology and Robustness of Level and Interlevel Sets.” Homology, Homotopy and Applications, vol. 15, no. 1, International Press, 2013, pp. 51–72, doi:10.4310/HHA.2013.v15.n1.a3.","short":"P. Bendich, H. Edelsbrunner, D. Morozov, A. Patel, Homology, Homotopy and Applications 15 (2013) 51–72."},"publication":"Homology, Homotopy and Applications","issue":"1","abstract":[{"text":"Given a continuous function f:X-R on a topological space, we consider the preimages of intervals and their homology groups and show how to read the ranks of these groups from the extended persistence diagram of f. In addition, we quantify the robustness of the homology classes under perturbations of f using well groups, and we show how to read the ranks of these groups from the same extended persistence diagram. The special case X=R3 has ramifications in the fields of medical imaging and scientific visualization.","lang":"eng"}],"type":"journal_article","oa_version":"Preprint","intvolume":" 15","title":"Homology and robustness of level and interlevel sets","status":"public","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"2859","month":"05","language":[{"iso":"eng"}],"doi":"10.4310/HHA.2013.v15.n1.a3","quality_controlled":"1","external_id":{"arxiv":["1102.3389"]},"oa":1,"main_file_link":[{"url":"https://arxiv.org/abs/1102.3389v1","open_access":"1"}],"publist_id":"3930","volume":15,"date_updated":"2021-01-12T07:00:18Z","date_created":"2018-12-11T11:59:58Z","author":[{"id":"43F6EC54-F248-11E8-B48F-1D18A9856A87","last_name":"Bendich","first_name":"Paul","full_name":"Bendich, Paul"},{"id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-9823-6833","first_name":"Herbert","last_name":"Edelsbrunner","full_name":"Edelsbrunner, Herbert"},{"first_name":"Dmitriy","last_name":"Morozov","full_name":"Morozov, Dmitriy"},{"full_name":"Patel, Amit","id":"34A254A0-F248-11E8-B48F-1D18A9856A87","first_name":"Amit","last_name":"Patel"}],"department":[{"_id":"HeEd"}],"publisher":"International Press","publication_status":"published","year":"2013"},{"author":[{"first_name":"Suqin","last_name":"Fang","full_name":"Fang, Suqin"},{"first_name":"Randy","last_name":"Clark","full_name":"Clark, Randy"},{"first_name":"Ying","last_name":"Zheng","full_name":"Zheng, Ying"},{"last_name":"Iyer Pascuzzi","first_name":"Anjali","full_name":"Iyer Pascuzzi, Anjali"},{"last_name":"Weitz","first_name":"Joshua","full_name":"Weitz, Joshua"},{"first_name":"Leon","last_name":"Kochian","full_name":"Kochian, Leon"},{"full_name":"Edelsbrunner, Herbert","orcid":"0000-0002-9823-6833","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","last_name":"Edelsbrunner","first_name":"Herbert"},{"full_name":"Liao, Hong","first_name":"Hong","last_name":"Liao"},{"full_name":"Benfey, Philip","first_name":"Philip","last_name":"Benfey"}],"volume":110,"date_updated":"2021-01-12T07:00:29Z","date_created":"2018-12-11T12:00:09Z","pmid":1,"year":"2013","publisher":"National Academy of Sciences","department":[{"_id":"HeEd"}],"publication_status":"published","publist_id":"3872","doi":"10.1073/pnas.1222821110","language":[{"iso":"eng"}],"external_id":{"pmid":["23362379"]},"main_file_link":[{"open_access":"1","url":"http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3574932/"}],"oa":1,"quality_controlled":"1","month":"02","oa_version":"Published Version","_id":"2887","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","intvolume":" 110","title":"Genotypic recognition and spatial responses by rice roots","status":"public","issue":"7","abstract":[{"lang":"eng","text":"Root system growth and development is highly plastic and is influenced by the surrounding environment. Roots frequently grow in heterogeneous environments that include interactions from neighboring plants and physical impediments in the rhizosphere. To investigate how planting density and physical objects affect root system growth, we grew rice in a transparent gel system in close proximity with another plant or a physical object. Root systems were imaged and reconstructed in three dimensions. Root-root interaction strength was calculated using quantitative metrics that characterize the extent towhich the reconstructed root systems overlap each other. Surprisingly, we found the overlap of root systems of the same genotype was significantly higher than that of root systems of different genotypes. Root systems of the same genotype tended to grow toward each other but those of different genotypes appeared to avoid each other. Shoot separation experiments excluded the possibility of aerial interactions, suggesting root communication. Staggered plantings indicated that interactions likely occur at root tips in close proximity. Recognition of obstacles also occurred through root tips, but through physical contact in a size-dependent manner. These results indicate that root systems use two different forms of communication to recognize objects and alter root architecture: root-root recognition, possibly mediated through root exudates, and root-object recognition mediated by physical contact at the root tips. This finding suggests that root tips act as local sensors that integrate rhizosphere information into global root architectural changes."}],"type":"journal_article","date_published":"2013-02-12T00:00:00Z","citation":{"short":"S. Fang, R. Clark, Y. Zheng, A. Iyer Pascuzzi, J. Weitz, L. Kochian, H. Edelsbrunner, H. Liao, P. Benfey, PNAS 110 (2013) 2670–2675.","mla":"Fang, Suqin, et al. “Genotypic Recognition and Spatial Responses by Rice Roots.” PNAS, vol. 110, no. 7, National Academy of Sciences, 2013, pp. 2670–75, doi:10.1073/pnas.1222821110.","chicago":"Fang, Suqin, Randy Clark, Ying Zheng, Anjali Iyer Pascuzzi, Joshua Weitz, Leon Kochian, Herbert Edelsbrunner, Hong Liao, and Philip Benfey. “Genotypic Recognition and Spatial Responses by Rice Roots.” PNAS. National Academy of Sciences, 2013. https://doi.org/10.1073/pnas.1222821110.","ama":"Fang S, Clark R, Zheng Y, et al. Genotypic recognition and spatial responses by rice roots. PNAS. 2013;110(7):2670-2675. doi:10.1073/pnas.1222821110","ieee":"S. Fang et al., “Genotypic recognition and spatial responses by rice roots,” PNAS, vol. 110, no. 7. National Academy of Sciences, pp. 2670–2675, 2013.","apa":"Fang, S., Clark, R., Zheng, Y., Iyer Pascuzzi, A., Weitz, J., Kochian, L., … Benfey, P. (2013). Genotypic recognition and spatial responses by rice roots. PNAS. National Academy of Sciences. https://doi.org/10.1073/pnas.1222821110","ista":"Fang S, Clark R, Zheng Y, Iyer Pascuzzi A, Weitz J, Kochian L, Edelsbrunner H, Liao H, Benfey P. 2013. Genotypic recognition and spatial responses by rice roots. PNAS. 110(7), 2670–2675."},"publication":"PNAS","page":"2670 - 2675","article_type":"original","article_processing_charge":"No","day":"12","scopus_import":1},{"status":"public","title":"Computing the M most probable modes of a graphical model","publication_status":"published","department":[{"_id":"HeEd"},{"_id":"VlKo"},{"_id":"ChLa"}],"intvolume":" 31","publisher":"JMLR","_id":"2901","year":"2013","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_updated":"2021-01-12T07:00:35Z","date_created":"2018-12-11T12:00:14Z","volume":31,"oa_version":"None","author":[{"full_name":"Chen, Chao","id":"3E92416E-F248-11E8-B48F-1D18A9856A87","last_name":"Chen","first_name":"Chao"},{"full_name":"Kolmogorov, Vladimir","last_name":"Kolmogorov","first_name":"Vladimir","id":"3D50B0BA-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Zhu","last_name":"Yan","full_name":"Yan, Zhu"},{"last_name":"Metaxas","first_name":"Dimitris","full_name":"Metaxas, Dimitris"},{"orcid":"0000-0001-8622-7887","id":"40C20FD2-F248-11E8-B48F-1D18A9856A87","last_name":"Lampert","first_name":"Christoph","full_name":"Lampert, Christoph"}],"alternative_title":[" JMLR: W&CP"],"type":"conference","abstract":[{"text":" We introduce the M-modes problem for graphical models: predicting the M label configurations of highest probability that are at the same time local maxima of the probability landscape. M-modes have multiple possible applications: because they are intrinsically diverse, they provide a principled alternative to non-maximum suppression techniques for structured prediction, they can act as codebook vectors for quantizing the configuration space, or they can form component centers for mixture model approximation. We present two algorithms for solving the M-modes problem. The first algorithm solves the problem in polynomial time when the underlying graphical model is a simple chain. The second algorithm solves the problem for junction chains. In synthetic and real dataset, we demonstrate how M-modes can improve the performance of prediction. We also use the generated modes as a tool to understand the topography of the probability distribution of configurations, for example with relation to the training set size and amount of noise in the data. ","lang":"eng"}],"publist_id":"3846","quality_controlled":"1","page":"161 - 169","main_file_link":[{"url":"http://jmlr.org/proceedings/papers/v31/chen13a.html","open_access":"1"}],"citation":{"ama":"Chen C, Kolmogorov V, Yan Z, Metaxas D, Lampert C. Computing the M most probable modes of a graphical model. In: Vol 31. JMLR; 2013:161-169.","apa":"Chen, C., Kolmogorov, V., Yan, Z., Metaxas, D., & Lampert, C. (2013). Computing the M most probable modes of a graphical model (Vol. 31, pp. 161–169). Presented at the AISTATS: Conference on Uncertainty in Artificial Intelligence, Scottsdale, AZ, United States: JMLR.","ieee":"C. Chen, V. Kolmogorov, Z. Yan, D. Metaxas, and C. Lampert, “Computing the M most probable modes of a graphical model,” presented at the AISTATS: Conference on Uncertainty in Artificial Intelligence, Scottsdale, AZ, United States, 2013, vol. 31, pp. 161–169.","ista":"Chen C, Kolmogorov V, Yan Z, Metaxas D, Lampert C. 2013. Computing the M most probable modes of a graphical model. AISTATS: Conference on Uncertainty in Artificial Intelligence, JMLR: W&CP, vol. 31, 161–169.","short":"C. Chen, V. Kolmogorov, Z. Yan, D. Metaxas, C. Lampert, in:, JMLR, 2013, pp. 161–169.","mla":"Chen, Chao, et al. Computing the M Most Probable Modes of a Graphical Model. Vol. 31, JMLR, 2013, pp. 161–69.","chicago":"Chen, Chao, Vladimir Kolmogorov, Zhu Yan, Dimitris Metaxas, and Christoph Lampert. “Computing the M Most Probable Modes of a Graphical Model,” 31:161–69. JMLR, 2013."},"oa":1,"language":[{"iso":"eng"}],"conference":{"location":"Scottsdale, AZ, United States","start_date":"2013-04-29","end_date":"2013-05-01","name":" AISTATS: Conference on Uncertainty in Artificial Intelligence"},"date_published":"2013-01-01T00:00:00Z","scopus_import":1,"month":"01","day":"01"},{"author":[{"full_name":"Kerber, Michael","last_name":"Kerber","first_name":"Michael","orcid":"0000-0002-8030-9299","id":"36E4574A-F248-11E8-B48F-1D18A9856A87"},{"orcid":"0000-0002-9823-6833","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","last_name":"Edelsbrunner","first_name":"Herbert","full_name":"Edelsbrunner, Herbert"}],"date_updated":"2021-01-12T07:00:36Z","date_created":"2018-12-11T12:00:16Z","year":"2013","department":[{"_id":"HeEd"}],"publisher":"Society of Industrial and Applied Mathematics","publication_status":"published","publist_id":"3841","file_date_updated":"2020-07-14T12:45:52Z","doi":"10.1137/1.9781611972931.6","conference":{"name":"ALENEX: Algorithm Engineering and Experiments","location":"New Orleans, LA, United States","start_date":"2013-01-07","end_date":"2013-01-07"},"language":[{"iso":"eng"}],"oa":1,"quality_controlled":"1","month":"01","pubrep_id":"547","file":[{"relation":"main_file","file_id":"4720","checksum":"a15a3ba22df9445731507f3e06c9fcee","date_updated":"2020-07-14T12:45:52Z","date_created":"2018-12-12T10:08:57Z","access_level":"open_access","file_name":"IST-2016-547-v1+1_2013-P-08-MedusaII.pdf","file_size":403013,"content_type":"application/pdf","creator":"system"}],"oa_version":"Submitted Version","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"2906","title":"3D kinetic alpha complexes and their implementation","status":"public","ddc":["500"],"abstract":[{"lang":"eng","text":"Motivated by an application in cell biology, we describe an extension of the kinetic data structures framework from Delaunay triangulations to fixed-radius alpha complexes. Our algorithm is implemented\r\nusing CGAL, following the exact geometric computation paradigm. We report on several\r\ntechniques to accelerate the computation that turn our implementation applicable to the underlying biological\r\nproblem."}],"type":"conference","alternative_title":["ALENEX"],"date_published":"2013-01-01T00:00:00Z","citation":{"chicago":"Kerber, Michael, and Herbert Edelsbrunner. “3D Kinetic Alpha Complexes and Their Implementation.” In 2013 Proceedings of the 15th Workshop on Algorithm Engineering and Experiments, 70–77. Society of Industrial and Applied Mathematics, 2013. https://doi.org/10.1137/1.9781611972931.6.","short":"M. Kerber, H. Edelsbrunner, in:, 2013 Proceedings of the 15th Workshop on Algorithm Engineering and Experiments, Society of Industrial and Applied Mathematics, 2013, pp. 70–77.","mla":"Kerber, Michael, and Herbert Edelsbrunner. “3D Kinetic Alpha Complexes and Their Implementation.” 2013 Proceedings of the 15th Workshop on Algorithm Engineering and Experiments, Society of Industrial and Applied Mathematics, 2013, pp. 70–77, doi:10.1137/1.9781611972931.6.","ieee":"M. Kerber and H. Edelsbrunner, “3D kinetic alpha complexes and their implementation,” in 2013 Proceedings of the 15th Workshop on Algorithm Engineering and Experiments, New Orleans, LA, United States, 2013, pp. 70–77.","apa":"Kerber, M., & Edelsbrunner, H. (2013). 3D kinetic alpha complexes and their implementation. In 2013 Proceedings of the 15th Workshop on Algorithm Engineering and Experiments (pp. 70–77). New Orleans, LA, United States: Society of Industrial and Applied Mathematics. https://doi.org/10.1137/1.9781611972931.6","ista":"Kerber M, Edelsbrunner H. 2013. 3D kinetic alpha complexes and their implementation. 2013 Proceedings of the 15th Workshop on Algorithm Engineering and Experiments. ALENEX: Algorithm Engineering and Experiments, ALENEX, , 70–77.","ama":"Kerber M, Edelsbrunner H. 3D kinetic alpha complexes and their implementation. In: 2013 Proceedings of the 15th Workshop on Algorithm Engineering and Experiments. Society of Industrial and Applied Mathematics; 2013:70-77. doi:10.1137/1.9781611972931.6"},"publication":"2013 Proceedings of the 15th Workshop on Algorithm Engineering and Experiments","page":"70 - 77","has_accepted_license":"1","day":"01","scopus_import":1},{"publication_identifier":{"issn":["0179-5376"],"eissn":["1432-0444"]},"month":"06","oa":1,"main_file_link":[{"open_access":"1","url":"https://doi.org/10.1007/s00454-013-9517-x"}],"quality_controlled":"1","doi":"10.1007/s00454-013-9517-x","language":[{"iso":"eng"}],"publist_id":"3991","acknowledgement":"This research is partially supported by the National Science Foundation (NSF) under Grant DBI-0820624, by the European Science Foundation under the Research Networking Programme, and the Russian Government Project 11.G34.31.0053.","year":"2013","publisher":"Springer","department":[{"_id":"HeEd"}],"publication_status":"published","related_material":{"record":[{"status":"public","relation":"earlier_version","id":"3134"}]},"author":[{"full_name":"Edelsbrunner, Herbert","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-9823-6833","first_name":"Herbert","last_name":"Edelsbrunner"},{"id":"F65D502E-E68D-11E9-9252-C644099818F6","last_name":"Fasy","first_name":"Brittany Terese","full_name":"Fasy, Brittany Terese"},{"first_name":"Günter","last_name":"Rote","full_name":"Rote, Günter"}],"volume":49,"date_created":"2018-12-11T11:59:44Z","date_updated":"2023-02-23T11:13:49Z","scopus_import":"1","article_processing_charge":"No","day":"01","citation":{"ista":"Edelsbrunner H, Fasy BT, Rote G. 2013. Add isotropic Gaussian kernels at own risk: More and more resilient modes in higher dimensions. Discrete & Computational Geometry. 49(4), 797–822.","ieee":"H. Edelsbrunner, B. T. Fasy, and G. Rote, “Add isotropic Gaussian kernels at own risk: More and more resilient modes in higher dimensions,” Discrete & Computational Geometry, vol. 49, no. 4. Springer, pp. 797–822, 2013.","apa":"Edelsbrunner, H., Fasy, B. T., & Rote, G. (2013). Add isotropic Gaussian kernels at own risk: More and more resilient modes in higher dimensions. Discrete & Computational Geometry. Springer. https://doi.org/10.1007/s00454-013-9517-x","ama":"Edelsbrunner H, Fasy BT, Rote G. Add isotropic Gaussian kernels at own risk: More and more resilient modes in higher dimensions. Discrete & Computational Geometry. 2013;49(4):797-822. doi:10.1007/s00454-013-9517-x","chicago":"Edelsbrunner, Herbert, Brittany Terese Fasy, and Günter Rote. “Add Isotropic Gaussian Kernels at Own Risk: More and More Resilient Modes in Higher Dimensions.” Discrete & Computational Geometry. Springer, 2013. https://doi.org/10.1007/s00454-013-9517-x.","mla":"Edelsbrunner, Herbert, et al. “Add Isotropic Gaussian Kernels at Own Risk: More and More Resilient Modes in Higher Dimensions.” Discrete & Computational Geometry, vol. 49, no. 4, Springer, 2013, pp. 797–822, doi:10.1007/s00454-013-9517-x.","short":"H. Edelsbrunner, B.T. Fasy, G. Rote, Discrete & Computational Geometry 49 (2013) 797–822."},"publication":"Discrete & Computational Geometry","page":"797 - 822","article_type":"original","date_published":"2013-06-01T00:00:00Z","type":"journal_article","issue":"4","abstract":[{"text":"The fact that a sum of isotropic Gaussian kernels can have more modes than kernels is surprising. Extra (ghost) modes do not exist in ℝ1 and are generally not well studied in higher dimensions. We study a configuration of n+1 Gaussian kernels for which there are exactly n+2 modes. We show that all modes lie on a finite set of lines, which we call axes, and study the restriction of the Gaussian mixture to these axes in order to discover that there are an exponential number of critical points in this configuration. Although the existence of ghost modes remained unknown due to the difficulty of finding examples in ℝ2, we show that the resilience of ghost modes grows like the square root of the dimension. In addition, we exhibit finite configurations of isotropic Gaussian kernels with superlinearly many modes.","lang":"eng"}],"user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"2815","intvolume":" 49","status":"public","title":"Add isotropic Gaussian kernels at own risk: More and more resilient modes in higher dimensions","oa_version":"Published Version"},{"language":[{"iso":"eng"}],"doi":"10.1016/j.comgeo.2012.02.010","date_published":"2013-05-01T00:00:00Z","page":"435 - 447","quality_controlled":"1","citation":{"mla":"Chen, Chao, and Michael Kerber. “An Output Sensitive Algorithm for Persistent Homology.” Computational Geometry: Theory and Applications, vol. 46, no. 4, Elsevier, 2013, pp. 435–47, doi:10.1016/j.comgeo.2012.02.010.","short":"C. Chen, M. Kerber, Computational Geometry: Theory and Applications 46 (2013) 435–447.","chicago":"Chen, Chao, and Michael Kerber. “An Output Sensitive Algorithm for Persistent Homology.” Computational Geometry: Theory and Applications. Elsevier, 2013. https://doi.org/10.1016/j.comgeo.2012.02.010.","ama":"Chen C, Kerber M. An output sensitive algorithm for persistent homology. Computational Geometry: Theory and Applications. 2013;46(4):435-447. doi:10.1016/j.comgeo.2012.02.010","ista":"Chen C, Kerber M. 2013. An output sensitive algorithm for persistent homology. Computational Geometry: Theory and Applications. 46(4), 435–447.","ieee":"C. Chen and M. Kerber, “An output sensitive algorithm for persistent homology,” Computational Geometry: Theory and Applications, vol. 46, no. 4. Elsevier, pp. 435–447, 2013.","apa":"Chen, C., & Kerber, M. (2013). An output sensitive algorithm for persistent homology. Computational Geometry: Theory and Applications. Elsevier. https://doi.org/10.1016/j.comgeo.2012.02.010"},"publication":"Computational Geometry: Theory and Applications","day":"01","month":"05","scopus_import":1,"volume":46,"oa_version":"None","date_updated":"2023-02-23T11:24:10Z","date_created":"2018-12-11T12:00:27Z","related_material":{"record":[{"relation":"earlier_version","status":"public","id":"3367"}]},"author":[{"full_name":"Chen, Chao","id":"3E92416E-F248-11E8-B48F-1D18A9856A87","last_name":"Chen","first_name":"Chao"},{"id":"36E4574A-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-8030-9299","first_name":"Michael","last_name":"Kerber","full_name":"Kerber, Michael"}],"publisher":"Elsevier","intvolume":" 46","department":[{"_id":"HeEd"}],"publication_status":"published","title":"An output sensitive algorithm for persistent homology","status":"public","acknowledgement":"The authors thank Herbert Edelsbrunner for many helpful discussions and suggestions. Moreover, they are grateful for the careful reviews that helped to improve the quality of the paper.","_id":"2939","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","year":"2013","publist_id":"3796","issue":"4","abstract":[{"lang":"eng","text":"In this paper, we present the first output-sensitive algorithm to compute the persistence diagram of a filtered simplicial complex. For any Γ > 0, it returns only those homology classes with persistence at least Γ. Instead of the classical reduction via column operations, our algorithm performs rank computations on submatrices of the boundary matrix. For an arbitrary constant δ ∈ (0, 1), the running time is O (C (1 - δ) Γ R d (n) log n), where C (1 - δ) Γ is the number of homology classes with persistence at least (1 - δ) Γ, n is the total number of simplices in the complex, d its dimension, and R d (n) is the complexity of computing the rank of an n × n matrix with O (d n) nonzero entries. Depending on the choice of the rank algorithm, this yields a deterministic O (C (1 - δ) Γ n 2.376) algorithm, an O (C (1 - δ) Γ n 2.28) Las-Vegas algorithm, or an O (C (1 - δ) Γ n 2 + ε{lunate}) Monte-Carlo algorithm for an arbitrary ε{lunate} > 0. The space complexity of the Monte-Carlo version is bounded by O (d n) = O (n log n)."}],"type":"journal_article"},{"publication_identifier":{"eisbn":["9783642382215"],"issn":["0302-9743"],"isbn":["9783642382208"],"eissn":["1611-3349"]},"month":"06","language":[{"iso":"eng"}],"doi":"10.1007/978-3-642-38221-5_19","conference":{"location":"Vienna, Austria","start_date":"2013-05-15","end_date":"2013-05-17","name":"GbRPR: Graph-based Representations in Pattern Recognition"},"project":[{"grant_number":"318493","_id":"255D761E-B435-11E9-9278-68D0E5697425","name":"Topological Complex Systems","call_identifier":"FP7"}],"quality_controlled":"1","ec_funded":1,"place":"Berlin, Heidelberg","volume":7877,"date_updated":"2023-09-05T15:10:20Z","date_created":"2022-03-21T07:30:33Z","author":[{"full_name":"Edelsbrunner, Herbert","last_name":"Edelsbrunner","first_name":"Herbert","orcid":"0000-0002-9823-6833","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87"}],"department":[{"_id":"HeEd"}],"publisher":"Springer Nature","publication_status":"published","year":"2013","acknowledgement":"This research is partially supported by the European Science Foundation (ESF) under the Research Network Programme, the European Union under the Toposys Project FP7-ICT-318493-STREP, the Russian Government under the Mega Project 11.G34.31.0053.","article_processing_charge":"No","day":"01","series_title":"LNCS","scopus_import":"1","date_published":"2013-06-01T00:00:00Z","page":"182-183","citation":{"chicago":"Edelsbrunner, Herbert. “Persistent Homology in Image Processing.” In Graph-Based Representations in Pattern Recognition, 7877:182–83. LNCS. Berlin, Heidelberg: Springer Nature, 2013. https://doi.org/10.1007/978-3-642-38221-5_19.","short":"H. Edelsbrunner, in:, Graph-Based Representations in Pattern Recognition, Springer Nature, Berlin, Heidelberg, 2013, pp. 182–183.","mla":"Edelsbrunner, Herbert. “Persistent Homology in Image Processing.” Graph-Based Representations in Pattern Recognition, vol. 7877, Springer Nature, 2013, pp. 182–83, doi:10.1007/978-3-642-38221-5_19.","ieee":"H. Edelsbrunner, “Persistent homology in image processing,” in Graph-Based Representations in Pattern Recognition, Vienna, Austria, 2013, vol. 7877, pp. 182–183.","apa":"Edelsbrunner, H. (2013). Persistent homology in image processing. In Graph-Based Representations in Pattern Recognition (Vol. 7877, pp. 182–183). Berlin, Heidelberg: Springer Nature. https://doi.org/10.1007/978-3-642-38221-5_19","ista":"Edelsbrunner H. 2013. Persistent homology in image processing. Graph-Based Representations in Pattern Recognition. GbRPR: Graph-based Representations in Pattern RecognitionLNCS vol. 7877, 182–183.","ama":"Edelsbrunner H. Persistent homology in image processing. In: Graph-Based Representations in Pattern Recognition. Vol 7877. LNCS. Berlin, Heidelberg: Springer Nature; 2013:182-183. doi:10.1007/978-3-642-38221-5_19"},"publication":"Graph-Based Representations in Pattern Recognition","abstract":[{"lang":"eng","text":"Taking images is an efficient way to collect data about the physical world. It can be done fast and in exquisite detail. By definition, image processing is the field that concerns itself with the computation aimed at harnessing the information contained in images [10]. This talk is concerned with topological information. Our main thesis is that persistent homology [5] is a useful method to quantify and summarize topological information, building a bridge that connects algebraic topology with applications. We provide supporting evidence for this thesis by touching upon four technical developments in the overlap between persistent homology and image processing."}],"type":"conference","oa_version":"None","intvolume":" 7877","status":"public","title":"Persistent homology in image processing","_id":"10897","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1"},{"language":[{"iso":"eng"}],"doi":"10.1070/RM2012v067n06ABEH004820","quality_controlled":"1","oa":1,"month":"01","date_created":"2018-12-11T11:59:55Z","date_updated":"2021-01-12T07:00:13Z","volume":67,"author":[{"full_name":"Edelsbrunner, Herbert","last_name":"Edelsbrunner","first_name":"Herbert","orcid":"0000-0002-9823-6833","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Strelkova","first_name":"Nataliya","full_name":"Strelkova, Nataliya"}],"publication_status":"published","department":[{"_id":"HeEd"}],"publisher":"IOP Publishing Ltd.","year":"2012","file_date_updated":"2020-07-14T12:45:51Z","publist_id":"3943","date_published":"2012-01-01T00:00:00Z","page":"1167 - 1168","publication":"Russian Mathematical Surveys","citation":{"ama":"Edelsbrunner H, Strelkova N. On the configuration space of Steiner minimal trees. Russian Mathematical Surveys. 2012;67(6):1167-1168. doi:10.1070/RM2012v067n06ABEH004820","ieee":"H. Edelsbrunner and N. Strelkova, “On the configuration space of Steiner minimal trees,” Russian Mathematical Surveys, vol. 67, no. 6. IOP Publishing Ltd., pp. 1167–1168, 2012.","apa":"Edelsbrunner, H., & Strelkova, N. (2012). On the configuration space of Steiner minimal trees. Russian Mathematical Surveys. IOP Publishing Ltd. https://doi.org/10.1070/RM2012v067n06ABEH004820","ista":"Edelsbrunner H, Strelkova N. 2012. On the configuration space of Steiner minimal trees. Russian Mathematical Surveys. 67(6), 1167–1168.","short":"H. Edelsbrunner, N. Strelkova, Russian Mathematical Surveys 67 (2012) 1167–1168.","mla":"Edelsbrunner, Herbert, and Nataliya Strelkova. “On the Configuration Space of Steiner Minimal Trees.” Russian Mathematical Surveys, vol. 67, no. 6, IOP Publishing Ltd., 2012, pp. 1167–68, doi:10.1070/RM2012v067n06ABEH004820.","chicago":"Edelsbrunner, Herbert, and Nataliya Strelkova. “On the Configuration Space of Steiner Minimal Trees.” Russian Mathematical Surveys. IOP Publishing Ltd., 2012. https://doi.org/10.1070/RM2012v067n06ABEH004820."},"day":"01","has_accepted_license":"1","scopus_import":1,"oa_version":"Submitted Version","file":[{"access_level":"open_access","file_name":"IST-2016-546-v1+1_2014-J-05-SteinerMinTrees.pdf","content_type":"application/pdf","file_size":392021,"creator":"system","relation":"main_file","file_id":"5078","checksum":"44ee8d173487e8ed41a51136816bbeb4","date_created":"2018-12-12T10:14:26Z","date_updated":"2020-07-14T12:45:51Z"}],"pubrep_id":"546","status":"public","title":"On the configuration space of Steiner minimal trees","ddc":["000"],"intvolume":" 67","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","_id":"2849","issue":"6","type":"journal_article"},{"type":"conference","abstract":[{"text":"In order to enjoy a digital version of the Jordan Curve Theorem, it is common to use the closed topology for the foreground and the open topology for the background of a 2-dimensional binary image. In this paper, we introduce a single topology that enjoys this theorem for all thresholds decomposing a real-valued image into foreground and background. This topology is easy to construct and it generalizes to n-dimensional images.","lang":"eng"}],"title":"The adaptive topology of a digital image","status":"public","ddc":["000"],"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","_id":"2903","oa_version":"Submitted Version","file":[{"file_name":"IST-2016-545-v1+1_2012-P-10-AdaptiveTopology.pdf","access_level":"open_access","creator":"system","file_size":760548,"content_type":"application/pdf","file_id":"4765","relation":"main_file","date_created":"2018-12-12T10:09:41Z","date_updated":"2020-07-14T12:45:52Z","checksum":"444869a4e8abf07834f88b6e5cb5e9c3"}],"pubrep_id":"545","scopus_import":1,"day":"06","has_accepted_license":"1","page":"41 - 48","citation":{"ama":"Edelsbrunner H, Symonova O. The adaptive topology of a digital image. 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Symonova, in:, IEEE, 2012, pp. 41–48.","chicago":"Edelsbrunner, Herbert, and Olga Symonova. “The Adaptive Topology of a Digital Image,” 41–48. IEEE, 2012. https://doi.org/10.1109/ISVD.2012.11."},"date_published":"2012-08-06T00:00:00Z","file_date_updated":"2020-07-14T12:45:52Z","publist_id":"3844","publication_status":"published","department":[{"_id":"HeEd"},{"_id":"MaJö"}],"publisher":"IEEE","year":"2012","date_created":"2018-12-11T12:00:15Z","date_updated":"2021-01-12T07:00:35Z","author":[{"full_name":"Edelsbrunner, Herbert","orcid":"0000-0002-9823-6833","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","last_name":"Edelsbrunner","first_name":"Herbert"},{"full_name":"Symonova, Olga","id":"3C0C7BC6-F248-11E8-B48F-1D18A9856A87","last_name":"Symonova","first_name":"Olga"}],"month":"08","quality_controlled":"1","oa":1,"language":[{"iso":"eng"}],"conference":{"name":"ISVD: International Symposium on Voronoi Diagrams in Science and Engineering","end_date":"2012-06-29","location":"New Brunswick, NJ, USA ","start_date":"2012-06-27"},"doi":"10.1109/ISVD.2012.11"},{"author":[{"full_name":"Dolbilin, Nikolai","last_name":"Dolbilin","first_name":"Nikolai"},{"full_name":"Edelsbrunner, Herbert","first_name":"Herbert","last_name":"Edelsbrunner","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-9823-6833"},{"first_name":"Oleg","last_name":"Musin","full_name":"Musin, Oleg"}],"volume":67,"date_updated":"2021-01-12T07:39:55Z","date_created":"2018-12-11T12:00:28Z","year":"2012","publisher":"IOP Publishing","department":[{"_id":"HeEd"}],"publication_status":"published","publist_id":"3792","file_date_updated":"2020-07-14T12:45:55Z","doi":"10.1070/RM2012v067n04ABEH004807","language":[{"iso":"eng"}],"oa":1,"quality_controlled":"1","month":"11","pubrep_id":"132","oa_version":"Submitted Version","file":[{"date_updated":"2020-07-14T12:45:55Z","date_created":"2018-12-12T10:16:49Z","checksum":"389a5ae53d6347de36c3468034f2821d","file_id":"5239","relation":"main_file","creator":"system","file_size":253816,"content_type":"application/pdf","file_name":"IST-2013-132-v1+1_2012-J-04-Functional-E.pdf","access_level":"open_access"}],"user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","_id":"2941","intvolume":" 67","title":"On the optimality of functionals over triangulations of Delaunay sets","status":"public","ddc":["510"],"issue":"4","type":"journal_article","date_published":"2012-11-01T00:00:00Z","citation":{"ieee":"N. Dolbilin, H. Edelsbrunner, and O. Musin, “On the optimality of functionals over triangulations of Delaunay sets,” Russian Mathematical Surveys, vol. 67, no. 4. IOP Publishing, pp. 781–783, 2012.","apa":"Dolbilin, N., Edelsbrunner, H., & Musin, O. (2012). On the optimality of functionals over triangulations of Delaunay sets. Russian Mathematical Surveys. IOP Publishing. https://doi.org/10.1070/RM2012v067n04ABEH004807","ista":"Dolbilin N, Edelsbrunner H, Musin O. 2012. On the optimality of functionals over triangulations of Delaunay sets. Russian Mathematical Surveys. 67(4), 781–783.","ama":"Dolbilin N, Edelsbrunner H, Musin O. On the optimality of functionals over triangulations of Delaunay sets. Russian Mathematical Surveys. 2012;67(4):781-783. doi:10.1070/RM2012v067n04ABEH004807","chicago":"Dolbilin, Nikolai, Herbert Edelsbrunner, and Oleg Musin. “On the Optimality of Functionals over Triangulations of Delaunay Sets.” Russian Mathematical Surveys. IOP Publishing, 2012. https://doi.org/10.1070/RM2012v067n04ABEH004807.","short":"N. Dolbilin, H. Edelsbrunner, O. Musin, Russian Mathematical Surveys 67 (2012) 781–783.","mla":"Dolbilin, Nikolai, et al. “On the Optimality of Functionals over Triangulations of Delaunay Sets.” Russian Mathematical Surveys, vol. 67, no. 4, IOP Publishing, 2012, pp. 781–83, doi:10.1070/RM2012v067n04ABEH004807."},"publication":"Russian Mathematical Surveys","page":"781 - 783","has_accepted_license":"1","day":"01","scopus_import":1},{"month":"01","day":"01","scopus_import":1,"language":[{"iso":"eng"}],"conference":{"end_date":"2012-08-31","location":"Graz, Austria","start_date":"2012-08-28","name":"Pattern Recognition"},"date_published":"2012-01-01T00:00:00Z","doi":"10.1007/978-3-642-32717-9_2","quality_controlled":"1","page":"11 - 20","citation":{"short":"G. Zankl, Y. Haxhimusa, A. Ion, in:, Springer, 2012, pp. 11–20.","mla":"Zankl, Georg, et al. Interactive Labeling of Image Segmentation Hierarchies. Vol. 7476, Springer, 2012, pp. 11–20, doi:10.1007/978-3-642-32717-9_2.","chicago":"Zankl, Georg, Yll Haxhimusa, and Adrian Ion. “Interactive Labeling of Image Segmentation Hierarchies,” 7476:11–20. Springer, 2012. https://doi.org/10.1007/978-3-642-32717-9_2.","ama":"Zankl G, Haxhimusa Y, Ion A. Interactive labeling of image segmentation hierarchies. In: Vol 7476. Springer; 2012:11-20. doi:10.1007/978-3-642-32717-9_2","ieee":"G. Zankl, Y. Haxhimusa, and A. Ion, “Interactive labeling of image segmentation hierarchies,” presented at the Pattern Recognition, Graz, Austria, 2012, vol. 7476, pp. 11–20.","apa":"Zankl, G., Haxhimusa, Y., & Ion, A. (2012). Interactive labeling of image segmentation hierarchies (Vol. 7476, pp. 11–20). Presented at the Pattern Recognition, Graz, Austria: Springer. https://doi.org/10.1007/978-3-642-32717-9_2","ista":"Zankl G, Haxhimusa Y, Ion A. 2012. Interactive labeling of image segmentation hierarchies. Pattern Recognition vol. 7476, 11–20."},"abstract":[{"text":"We study the task of interactive semantic labeling of a segmentation hierarchy. To this end we propose a framework interleaving two components: an automatic labeling step, based on a Conditional Random Field whose dependencies are defined by the inclusion tree of the segmentation hierarchy, and an interaction step that integrates incremental input from a human user. Evaluated on two distinct datasets, the proposed interactive approach efficiently integrates human interventions and illustrates the advantages of structured prediction in an interactive framework. ","lang":"eng"}],"publist_id":"3737","type":"conference","date_created":"2018-12-11T12:00:37Z","date_updated":"2021-01-12T07:40:10Z","oa_version":"None","volume":7476,"author":[{"full_name":"Zankl, Georg","first_name":"Georg","last_name":"Zankl"},{"full_name":"Haxhimusa, Yll","first_name":"Yll","last_name":"Haxhimusa"},{"first_name":"Adrian","last_name":"Ion","id":"29F89302-F248-11E8-B48F-1D18A9856A87","full_name":"Ion, Adrian"}],"status":"public","publication_status":"published","title":"Interactive labeling of image segmentation hierarchies","intvolume":" 7476","department":[{"_id":"HeEd"}],"publisher":"Springer","_id":"2971","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","year":"2012"},{"acknowledgement":"This research is supported by the Korean Government WCU Grant R33-2008-000-10101-0.","year":"2012","department":[{"_id":"HeEd"}],"publisher":"Cambridge University Press","publication_status":"published","author":[{"last_name":"Brown","first_name":"Gavin","full_name":"Brown, Gavin"},{"last_name":"Kerber","first_name":"Michael","orcid":"0000-0002-8030-9299","id":"36E4574A-F248-11E8-B48F-1D18A9856A87","full_name":"Kerber, Michael"},{"full_name":"Reid, Miles","last_name":"Reid","first_name":"Miles"}],"volume":148,"date_created":"2018-12-11T12:01:30Z","date_updated":"2021-01-12T07:41:12Z","publist_id":"3579","oa":1,"main_file_link":[{"url":"http://arxiv.org/abs/1009.4313","open_access":"1"}],"quality_controlled":"1","doi":"10.1112/S0010437X11007226","language":[{"iso":"eng"}],"month":"07","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","_id":"3120","intvolume":" 148","title":"Fano 3 folds in codimension 4 Tom and Jerry Part I","status":"public","oa_version":"Preprint","type":"journal_article","issue":"4","abstract":[{"lang":"eng","text":"We introduce a strategy based on Kustin-Miller unprojection that allows us to construct many hundreds of Gorenstein codimension 4 ideals with 9 × 16 resolutions (that is, nine equations and sixteen first syzygies). Our two basic games are called Tom and Jerry; the main application is the biregular construction of most of the anticanonically polarised Mori Fano 3-folds of Altinok's thesis. There are 115 cases whose numerical data (in effect, the Hilbert series) allow a Type I projection. In every case, at least one Tom and one Jerry construction works, providing at least two deformation families of quasismooth Fano 3-folds having the same numerics but different topology. © 2012 Copyright Foundation Compositio Mathematica."}],"citation":{"ista":"Brown G, Kerber M, Reid M. 2012. Fano 3 folds in codimension 4 Tom and Jerry Part I. Compositio Mathematica. 148(4), 1171–1194.","apa":"Brown, G., Kerber, M., & Reid, M. (2012). Fano 3 folds in codimension 4 Tom and Jerry Part I. Compositio Mathematica. Cambridge University Press. https://doi.org/10.1112/S0010437X11007226","ieee":"G. Brown, M. Kerber, and M. Reid, “Fano 3 folds in codimension 4 Tom and Jerry Part I,” Compositio Mathematica, vol. 148, no. 4. Cambridge University Press, pp. 1171–1194, 2012.","ama":"Brown G, Kerber M, Reid M. Fano 3 folds in codimension 4 Tom and Jerry Part I. Compositio Mathematica. 2012;148(4):1171-1194. doi:10.1112/S0010437X11007226","chicago":"Brown, Gavin, Michael Kerber, and Miles Reid. “Fano 3 Folds in Codimension 4 Tom and Jerry Part I.” Compositio Mathematica. Cambridge University Press, 2012. https://doi.org/10.1112/S0010437X11007226.","mla":"Brown, Gavin, et al. “Fano 3 Folds in Codimension 4 Tom and Jerry Part I.” Compositio Mathematica, vol. 148, no. 4, Cambridge University Press, 2012, pp. 1171–94, doi:10.1112/S0010437X11007226.","short":"G. Brown, M. Kerber, M. Reid, Compositio Mathematica 148 (2012) 1171–1194."},"publication":"Compositio Mathematica","page":"1171 - 1194","date_published":"2012-07-01T00:00:00Z","scopus_import":1,"day":"01"},{"month":"06","day":"20","scopus_import":1,"date_published":"2012-06-20T00:00:00Z","doi":"10.1145/2261250.2261287","conference":{"start_date":"2012-06-17","location":"Chapel Hill, NC, USA","end_date":"2012-06-20","name":"SCG: Symposium on Computational Geometry"},"language":[{"iso":"eng"}],"oa":1,"citation":{"ista":"Edelsbrunner H, Kerber M. 2012. Alexander duality for functions: The persistent behavior of land and water and shore. Proceedings of the twenty-eighth annual symposium on Computational geometry . SCG: Symposium on Computational Geometry, 249–258.","ieee":"H. Edelsbrunner and M. Kerber, “Alexander duality for functions: The persistent behavior of land and water and shore,” in Proceedings of the twenty-eighth annual symposium on Computational geometry , Chapel Hill, NC, USA, 2012, pp. 249–258.","apa":"Edelsbrunner, H., & Kerber, M. (2012). Alexander duality for functions: The persistent behavior of land and water and shore. In Proceedings of the twenty-eighth annual symposium on Computational geometry (pp. 249–258). Chapel Hill, NC, USA: ACM. https://doi.org/10.1145/2261250.2261287","ama":"Edelsbrunner H, Kerber M. Alexander duality for functions: The persistent behavior of land and water and shore. In: Proceedings of the Twenty-Eighth Annual Symposium on Computational Geometry . ACM; 2012:249-258. doi:10.1145/2261250.2261287","chicago":"Edelsbrunner, Herbert, and Michael Kerber. “Alexander Duality for Functions: The Persistent Behavior of Land and Water and Shore.” In Proceedings of the Twenty-Eighth Annual Symposium on Computational Geometry , 249–58. ACM, 2012. https://doi.org/10.1145/2261250.2261287.","mla":"Edelsbrunner, Herbert, and Michael Kerber. “Alexander Duality for Functions: The Persistent Behavior of Land and Water and Shore.” Proceedings of the Twenty-Eighth Annual Symposium on Computational Geometry , ACM, 2012, pp. 249–58, doi:10.1145/2261250.2261287.","short":"H. Edelsbrunner, M. Kerber, in:, Proceedings of the Twenty-Eighth Annual Symposium on Computational Geometry , ACM, 2012, pp. 249–258."},"main_file_link":[{"open_access":"1","url":"http://arxiv.org/abs/1109.5052"}],"publication":"Proceedings of the twenty-eighth annual symposium on Computational geometry ","page":"249 - 258","quality_controlled":"1","publist_id":"3564","abstract":[{"text":"This note contributes to the point calculus of persistent homology by extending Alexander duality from spaces to real-valued functions. Given a perfect Morse function f: S n+1 →[0, 1 and a decomposition S n+1 = U ∪ V into two (n + 1)-manifolds with common boundary M, we prove elementary relationships between the persistence diagrams of f restricted to U, to V, and to M. ","lang":"eng"}],"type":"conference","author":[{"last_name":"Edelsbrunner","first_name":"Herbert","orcid":"0000-0002-9823-6833","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","full_name":"Edelsbrunner, Herbert"},{"id":"36E4574A-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-8030-9299","first_name":"Michael","last_name":"Kerber","full_name":"Kerber, Michael"}],"oa_version":"Preprint","date_created":"2018-12-11T12:01:35Z","date_updated":"2021-01-12T07:41:17Z","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","_id":"3133","acknowledgement":"his research is partially supported by the National Science Foundation (NSF) under grant DBI-0820624, the European Science Foundation under the Research Networking Programme, and the Russian Government Project 11.G34.31.0053.\r\nThe authors thank an anonymous referee for suggesting the simplified proof of the Contravariant PE Theorem given in this paper. They also thank Frederick Cohen, Yuriy Mileyko and Amit Patel for helpful discussions.","year":"2012","publisher":"ACM","department":[{"_id":"HeEd"}],"title":"Alexander duality for functions: The persistent behavior of land and water and shore","status":"public","publication_status":"published"},{"type":"conference","publist_id":"3563","abstract":[{"text":"It has been an open question whether the sum of finitely many isotropic Gaussian kernels in n ≥ 2 dimensions can have more modes than kernels, until in 2003 Carreira-Perpiñán and Williams exhibited n +1 isotropic Gaussian kernels in ℝ n with n + 2 modes. We give a detailed analysis of this example, showing that it has exponentially many critical points and that the resilience of the extra mode grows like √n. In addition, we exhibit finite configurations of isotropic Gaussian kernels with superlinearly many modes. ","lang":"eng"}],"_id":"3134","acknowledgement":"This research is partially supported by the National Science Foun- dation (NSF) under grant DBI-0820624, by the European Science Foundation under the Research Networking Programme, and the Russian Government Project 11.G34.31.0053.","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","year":"2012","publisher":"ACM","department":[{"_id":"HeEd"}],"title":"Add isotropic Gaussian kernels at own risk: More and more resilient modes in higher dimensions","status":"public","publication_status":"published","related_material":{"record":[{"id":"2815","status":"public","relation":"later_version"}]},"author":[{"full_name":"Edelsbrunner, Herbert","last_name":"Edelsbrunner","first_name":"Herbert","orcid":"0000-0002-9823-6833","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Fasy","first_name":"Brittany","full_name":"Fasy, Brittany"},{"first_name":"Günter","last_name":"Rote","full_name":"Rote, Günter"}],"oa_version":"None","date_updated":"2023-02-23T10:59:27Z","date_created":"2018-12-11T12:01:35Z","scopus_import":1,"day":"20","month":"06","citation":{"ama":"Edelsbrunner H, Fasy B, Rote G. Add isotropic Gaussian kernels at own risk: More and more resilient modes in higher dimensions. In: Proceedings of the Twenty-Eighth Annual Symposium on Computational Geometry . ACM; 2012:91-100. doi:10.1145/2261250.2261265","ieee":"H. Edelsbrunner, B. Fasy, and G. Rote, “Add isotropic Gaussian kernels at own risk: More and more resilient modes in higher dimensions,” in Proceedings of the twenty-eighth annual symposium on Computational geometry , Chapel Hill, NC, USA, 2012, pp. 91–100.","apa":"Edelsbrunner, H., Fasy, B., & Rote, G. (2012). Add isotropic Gaussian kernels at own risk: More and more resilient modes in higher dimensions. In Proceedings of the twenty-eighth annual symposium on Computational geometry (pp. 91–100). Chapel Hill, NC, USA: ACM. https://doi.org/10.1145/2261250.2261265","ista":"Edelsbrunner H, Fasy B, Rote G. 2012. Add isotropic Gaussian kernels at own risk: More and more resilient modes in higher dimensions. Proceedings of the twenty-eighth annual symposium on Computational geometry . SCG: Symposium on Computational Geometry, 91–100.","short":"H. Edelsbrunner, B. Fasy, G. Rote, in:, Proceedings of the Twenty-Eighth Annual Symposium on Computational Geometry , ACM, 2012, pp. 91–100.","mla":"Edelsbrunner, Herbert, et al. “Add Isotropic Gaussian Kernels at Own Risk: More and More Resilient Modes in Higher Dimensions.” Proceedings of the Twenty-Eighth Annual Symposium on Computational Geometry , ACM, 2012, pp. 91–100, doi:10.1145/2261250.2261265.","chicago":"Edelsbrunner, Herbert, Brittany Fasy, and Günter Rote. “Add Isotropic Gaussian Kernels at Own Risk: More and More Resilient Modes in Higher Dimensions.” In Proceedings of the Twenty-Eighth Annual Symposium on Computational Geometry , 91–100. ACM, 2012. https://doi.org/10.1145/2261250.2261265."},"publication":"Proceedings of the twenty-eighth annual symposium on Computational geometry ","page":"91 - 100","quality_controlled":"1","date_published":"2012-06-20T00:00:00Z","doi":"10.1145/2261250.2261265","conference":{"end_date":"2012-06-20","start_date":"2012-06-17","location":"Chapel Hill, NC, USA","name":"SCG: Symposium on Computational Geometry"},"language":[{"iso":"eng"}]},{"scopus_import":1,"has_accepted_license":"1","day":"01","page":"393 - 414","citation":{"ista":"Edelsbrunner H, Kerber M. 2012. Dual complexes of cubical subdivisions of ℝn. Discrete & Computational Geometry. 47(2), 393–414.","ieee":"H. Edelsbrunner and M. Kerber, “Dual complexes of cubical subdivisions of ℝn,” Discrete & Computational Geometry, vol. 47, no. 2. Springer, pp. 393–414, 2012.","apa":"Edelsbrunner, H., & Kerber, M. (2012). Dual complexes of cubical subdivisions of ℝn. Discrete & Computational Geometry. Springer. https://doi.org/10.1007/s00454-011-9382-4","ama":"Edelsbrunner H, Kerber M. Dual complexes of cubical subdivisions of ℝn. Discrete & Computational Geometry. 2012;47(2):393-414. doi:10.1007/s00454-011-9382-4","chicago":"Edelsbrunner, Herbert, and Michael Kerber. “Dual Complexes of Cubical Subdivisions of ℝn.” Discrete & Computational Geometry. Springer, 2012. https://doi.org/10.1007/s00454-011-9382-4.","mla":"Edelsbrunner, Herbert, and Michael Kerber. “Dual Complexes of Cubical Subdivisions of ℝn.” Discrete & Computational Geometry, vol. 47, no. 2, Springer, 2012, pp. 393–414, doi:10.1007/s00454-011-9382-4.","short":"H. Edelsbrunner, M. Kerber, Discrete & Computational Geometry 47 (2012) 393–414."},"publication":"Discrete & Computational Geometry","date_published":"2012-03-01T00:00:00Z","type":"journal_article","issue":"2","abstract":[{"lang":"eng","text":"We use a distortion to define the dual complex of a cubical subdivision of ℝ n as an n-dimensional subcomplex of the nerve of the set of n-cubes. Motivated by the topological analysis of high-dimensional digital image data, we consider such subdivisions defined by generalizations of quad- and oct-trees to n dimensions. Assuming the subdivision is balanced, we show that mapping each vertex to the center of the corresponding n-cube gives a geometric realization of the dual complex in ℝ n."}],"intvolume":" 47","title":"Dual complexes of cubical subdivisions of ℝn","ddc":["000"],"status":"public","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","_id":"3256","file":[{"file_name":"IST-2016-543-v1+1_2012-J-08-HierarchyCubeComplex.pdf","access_level":"open_access","file_size":203636,"content_type":"application/pdf","creator":"system","relation":"main_file","file_id":"4675","date_created":"2018-12-12T10:08:15Z","date_updated":"2020-07-14T12:46:05Z","checksum":"76486f3b2c9e7fd81342f3832ca387e7"}],"oa_version":"Submitted Version","pubrep_id":"543","month":"03","quality_controlled":"1","oa":1,"language":[{"iso":"eng"}],"doi":"10.1007/s00454-011-9382-4","publist_id":"3398","file_date_updated":"2020-07-14T12:46:05Z","publisher":"Springer","department":[{"_id":"HeEd"}],"publication_status":"published","year":"2012","acknowledgement":"This research is partially supported by the Defense Advanced Research Projects Agency (DARPA) under grants HR0011-05-1-0057 and HR0011-09-0065 as well as the National Science Foundation (NSF) under grant DBI-0820624.","volume":47,"date_created":"2018-12-11T12:02:17Z","date_updated":"2021-01-12T07:42:10Z","author":[{"full_name":"Edelsbrunner, Herbert","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-9823-6833","first_name":"Herbert","last_name":"Edelsbrunner"},{"full_name":"Kerber, Michael","id":"36E4574A-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-8030-9299","first_name":"Michael","last_name":"Kerber"}]},{"month":"01","day":"12","citation":{"ieee":"A. Ion, J. Carreira, and C. Sminchisescu, “Image segmentation by figure-ground composition into maximal cliques,” presented at the ICCV: International Conference on Computer Vision, Barcelona, Spain, 2012.","apa":"Ion, A., Carreira, J., & Sminchisescu, C. (2012). Image segmentation by figure-ground composition into maximal cliques. Presented at the ICCV: International Conference on Computer Vision, Barcelona, Spain: IEEE. https://doi.org/10.1109/ICCV.2011.6126486","ista":"Ion A, Carreira J, Sminchisescu C. 2012. Image segmentation by figure-ground composition into maximal cliques. ICCV: International Conference on Computer Vision, 6126486.","ama":"Ion A, Carreira J, Sminchisescu C. Image segmentation by figure-ground composition into maximal cliques. In: IEEE; 2012. doi:10.1109/ICCV.2011.6126486","chicago":"Ion, Adrian, Joao Carreira, and Cristian Sminchisescu. “Image Segmentation by Figure-Ground Composition into Maximal Cliques.” IEEE, 2012. https://doi.org/10.1109/ICCV.2011.6126486.","short":"A. Ion, J. Carreira, C. Sminchisescu, in:, IEEE, 2012.","mla":"Ion, Adrian, et al. Image Segmentation by Figure-Ground Composition into Maximal Cliques. 6126486, IEEE, 2012, doi:10.1109/ICCV.2011.6126486."},"quality_controlled":"1","doi":"10.1109/ICCV.2011.6126486","date_published":"2012-01-12T00:00:00Z","conference":{"location":"Barcelona, Spain","start_date":"2011-11-06","end_date":"2011-11-13","name":"ICCV: International Conference on Computer Vision"},"language":[{"iso":"eng"}],"type":"conference","article_number":"6126486","publist_id":"3382","abstract":[{"lang":"eng","text":"We propose a mid-level statistical model for image segmentation that composes multiple figure-ground hypotheses (FG) obtained by applying constraints at different locations and scales, into larger interpretations (tilings) of the entire image. Inference is cast as optimization over sets of maximal cliques sampled from a graph connecting all non-overlapping figure-ground segment hypotheses. Potential functions over cliques combine unary, Gestalt-based figure qualities, and pairwise compatibilities among spatially neighboring segments, constrained by T-junctions and the boundary interface statistics of real scenes. Learning the model parameters is based on maximum likelihood, alternating between sampling image tilings and optimizing their potential function parameters. State of the art results are reported on the Berkeley and Stanford segmentation datasets, as well as VOC2009, where a 28% improvement was achieved."}],"_id":"3265","year":"2012","user_id":"4435EBFC-F248-11E8-B48F-1D18A9856A87","publisher":"IEEE","department":[{"_id":"HeEd"}],"status":"public","publication_status":"published","title":"Image segmentation by figure-ground composition into maximal cliques","author":[{"last_name":"Ion","first_name":"Adrian","id":"29F89302-F248-11E8-B48F-1D18A9856A87","full_name":"Ion, Adrian"},{"last_name":"Carreira","first_name":"Joao","full_name":"Carreira, Joao"},{"full_name":"Sminchisescu, Cristian","first_name":"Cristian","last_name":"Sminchisescu"}],"oa_version":"None","date_updated":"2021-01-12T07:42:15Z","date_created":"2018-12-11T12:02:21Z"},{"publist_id":"3584","date_updated":"2023-02-23T11:22:30Z","date_created":"2018-12-11T12:01:28Z","volume":48,"author":[{"full_name":"Berberich, Eric","first_name":"Eric","last_name":"Berberich"},{"last_name":"Halperin","first_name":"Dan","full_name":"Halperin, Dan"},{"orcid":"0000-0002-8030-9299","id":"36E4574A-F248-11E8-B48F-1D18A9856A87","last_name":"Kerber","first_name":"Michael","full_name":"Kerber, Michael"},{"full_name":"Pogalnikova, Roza","last_name":"Pogalnikova","first_name":"Roza"}],"related_material":{"record":[{"relation":"earlier_version","status":"public","id":"3329"}]},"publication_status":"published","publisher":"Springer","department":[{"_id":"HeEd"}],"acknowledgement":"We thank Eyal Flato (Plataine Ltd.) for raising the offset-deconstruction problem in connection with wood cutting. We also thank Tim Bretl (UIUC) for suggesting the digital-pen offset-deconstruction problem. This work has been supported in part by the Israel Science Foundation (grant no. 1102/11), by the German–Israeli Foundation (grant no. 969/07), by the Hermann Minkowski–Minerva Center for Geometry at Tel Aviv University, and by the EU Project under Contract No. 255827 (CGL—Computational Geometry Learning).\r\n","year":"2012","month":"12","language":[{"iso":"eng"}],"doi":"10.1007/s00454-012-9441-5","quality_controlled":"1","oa":1,"main_file_link":[{"open_access":"1","url":"http://arxiv.org/abs/1109.2158"}],"external_id":{"arxiv":["1109.2158"]},"abstract":[{"text":"We consider the offset-deconstruction problem: Given a polygonal shape Q with n vertices, can it be expressed, up to a tolerance ε in Hausdorff distance, as the Minkowski sum of another polygonal shape P with a disk of fixed radius? If it does, we also seek a preferably simple-looking solution P; then, P's offset constitutes an accurate, vertex-reduced, and smoothened approximation of Q. We give an O(nlogn)-time exact decision algorithm that handles any polygonal shape, assuming the real-RAM model of computation. A variant of the algorithm, which we have implemented using the cgal library, is based on rational arithmetic and answers the same deconstruction problem up to an uncertainty parameter δ its running time additionally depends on δ. If the input shape is found to be approximable, this algorithm also computes an approximate solution for the problem. It also allows us to solve parameter-optimization problems induced by the offset-deconstruction problem. For convex shapes, the complexity of the exact decision algorithm drops to O(n), which is also the time required to compute a solution P with at most one more vertex than a vertex-minimal one.","lang":"eng"}],"issue":"4","type":"journal_article","oa_version":"Preprint","status":"public","title":"Deconstructing approximate offsets","intvolume":" 48","_id":"3115","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","day":"01","scopus_import":1,"date_published":"2012-12-01T00:00:00Z","page":"964 - 989","publication":"Discrete & Computational Geometry","citation":{"chicago":"Berberich, Eric, Dan Halperin, Michael Kerber, and Roza Pogalnikova. “Deconstructing Approximate Offsets.” Discrete & Computational Geometry. Springer, 2012. https://doi.org/10.1007/s00454-012-9441-5.","short":"E. Berberich, D. Halperin, M. Kerber, R. Pogalnikova, Discrete & Computational Geometry 48 (2012) 964–989.","mla":"Berberich, Eric, et al. “Deconstructing Approximate Offsets.” Discrete & Computational Geometry, vol. 48, no. 4, Springer, 2012, pp. 964–89, doi:10.1007/s00454-012-9441-5.","apa":"Berberich, E., Halperin, D., Kerber, M., & Pogalnikova, R. (2012). Deconstructing approximate offsets. Discrete & Computational Geometry. Springer. https://doi.org/10.1007/s00454-012-9441-5","ieee":"E. Berberich, D. Halperin, M. Kerber, and R. Pogalnikova, “Deconstructing approximate offsets,” Discrete & Computational Geometry, vol. 48, no. 4. Springer, pp. 964–989, 2012.","ista":"Berberich E, Halperin D, Kerber M, Pogalnikova R. 2012. Deconstructing approximate offsets. Discrete & Computational Geometry. 48(4), 964–989.","ama":"Berberich E, Halperin D, Kerber M, Pogalnikova R. Deconstructing approximate offsets. Discrete & Computational Geometry. 2012;48(4):964-989. doi:10.1007/s00454-012-9441-5"}},{"doi":"10.1016/j.jsc.2011.11.001","date_published":"2012-03-01T00:00:00Z","language":[{"iso":"eng"}],"publication":" Journal of Symbolic Computation","main_file_link":[{"url":"http://arxiv.org/abs/1104.1510","open_access":"1"}],"oa":1,"citation":{"chicago":"Kerber, Michael, and Michael Sagraloff. “A Worst Case Bound for Topology Computation of Algebraic Curves.” Journal of Symbolic Computation. Elsevier, 2012. https://doi.org/10.1016/j.jsc.2011.11.001.","mla":"Kerber, Michael, and Michael Sagraloff. “A Worst Case Bound for Topology Computation of Algebraic Curves.” Journal of Symbolic Computation, vol. 47, no. 3, Elsevier, 2012, pp. 239–58, doi:10.1016/j.jsc.2011.11.001.","short":"M. Kerber, M. Sagraloff, Journal of Symbolic Computation 47 (2012) 239–258.","ista":"Kerber M, Sagraloff M. 2012. A worst case bound for topology computation of algebraic curves. Journal of Symbolic Computation. 47(3), 239–258.","ieee":"M. Kerber and M. Sagraloff, “A worst case bound for topology computation of algebraic curves,” Journal of Symbolic Computation, vol. 47, no. 3. Elsevier, pp. 239–258, 2012.","apa":"Kerber, M., & Sagraloff, M. (2012). A worst case bound for topology computation of algebraic curves. Journal of Symbolic Computation. Elsevier. https://doi.org/10.1016/j.jsc.2011.11.001","ama":"Kerber M, Sagraloff M. A worst case bound for topology computation of algebraic curves. Journal of Symbolic Computation. 2012;47(3):239-258. doi:10.1016/j.jsc.2011.11.001"},"quality_controlled":"1","page":"239 - 258","month":"03","day":"01","scopus_import":1,"author":[{"full_name":"Kerber, Michael","id":"36E4574A-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-8030-9299","first_name":"Michael","last_name":"Kerber"},{"first_name":"Michael","last_name":"Sagraloff","full_name":"Sagraloff, Michael"}],"date_updated":"2021-01-12T07:42:43Z","date_created":"2018-12-11T12:02:43Z","oa_version":"Preprint","volume":47,"_id":"3331","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","year":"2012","title":"A worst case bound for topology computation of algebraic curves","publication_status":"published","status":"public","publisher":"Elsevier","intvolume":" 47","department":[{"_id":"HeEd"}],"abstract":[{"text":"Computing the topology of an algebraic plane curve C means computing a combinatorial graph that is isotopic to C and thus represents its topology in R2. We prove that, for a polynomial of degree n with integer coefficients bounded by 2ρ, the topology of the induced curve can be computed with bit operations ( indicates that we omit logarithmic factors). Our analysis improves the previous best known complexity bounds by a factor of n2. The improvement is based on new techniques to compute and refine isolating intervals for the real roots of polynomials, and on the consequent amortized analysis of the critical fibers of the algebraic curve.","lang":"eng"}],"issue":"3","publist_id":"3303","type":"journal_article"},{"month":"06","main_file_link":[{"open_access":"1","url":"http://arxiv.org/abs/1107.3793"}],"external_id":{"arxiv":["1107.3793"]},"oa":1,"quality_controlled":"1","conference":{"start_date":"2012-07-04","location":"Helsinki, Finland","end_date":"2012-07-06","name":"SWAT: Symposium and Workshops on Algorithm Theory"},"doi":"10.1007/978-3-642-31155-0_17","language":[{"iso":"eng"}],"publist_id":"3569","year":"2012","publication_status":"published","publisher":"Springer","department":[{"_id":"HeEd"}],"author":[{"full_name":"Busaryev, Oleksiy","last_name":"Busaryev","first_name":"Oleksiy"},{"full_name":"Cabello, Sergio","last_name":"Cabello","first_name":"Sergio"},{"full_name":"Chen, Chao","last_name":"Chen","first_name":"Chao","id":"3E92416E-F248-11E8-B48F-1D18A9856A87"},{"first_name":"Tamal","last_name":"Dey","full_name":"Dey, Tamal"},{"last_name":"Wang","first_name":"Yusu","full_name":"Wang, Yusu"}],"date_updated":"2021-01-12T07:41:15Z","date_created":"2018-12-11T12:01:33Z","volume":7357,"scopus_import":1,"day":"19","citation":{"short":"O. Busaryev, S. Cabello, C. Chen, T. Dey, Y. Wang, in:, Springer, 2012, pp. 189–200.","mla":"Busaryev, Oleksiy, et al. Annotating Simplices with a Homology Basis and Its Applications. Vol. 7357, Springer, 2012, pp. 189–200, doi:10.1007/978-3-642-31155-0_17.","chicago":"Busaryev, Oleksiy, Sergio Cabello, Chao Chen, Tamal Dey, and Yusu Wang. “Annotating Simplices with a Homology Basis and Its Applications,” 7357:189–200. Springer, 2012. https://doi.org/10.1007/978-3-642-31155-0_17.","ama":"Busaryev O, Cabello S, Chen C, Dey T, Wang Y. Annotating simplices with a homology basis and its applications. In: Vol 7357. Springer; 2012:189-200. doi:10.1007/978-3-642-31155-0_17","ieee":"O. Busaryev, S. Cabello, C. Chen, T. Dey, and Y. Wang, “Annotating simplices with a homology basis and its applications,” presented at the SWAT: Symposium and Workshops on Algorithm Theory, Helsinki, Finland, 2012, vol. 7357, pp. 189–200.","apa":"Busaryev, O., Cabello, S., Chen, C., Dey, T., & Wang, Y. (2012). Annotating simplices with a homology basis and its applications (Vol. 7357, pp. 189–200). Presented at the SWAT: Symposium and Workshops on Algorithm Theory, Helsinki, Finland: Springer. https://doi.org/10.1007/978-3-642-31155-0_17","ista":"Busaryev O, Cabello S, Chen C, Dey T, Wang Y. 2012. Annotating simplices with a homology basis and its applications. SWAT: Symposium and Workshops on Algorithm Theory, LNCS, vol. 7357, 189–200."},"page":"189 - 200","date_published":"2012-06-19T00:00:00Z","type":"conference","alternative_title":["LNCS"],"abstract":[{"text":"Let K be a simplicial complex and g the rank of its p-th homology group Hp(K) defined with ℤ2 coefficients. We show that we can compute a basis H of Hp(K) and annotate each p-simplex of K with a binary vector of length g with the following property: the annotations, summed over all p-simplices in any p-cycle z, provide the coordinate vector of the homology class [z] in the basis H. The basis and the annotations for all simplices can be computed in O(n ω ) time, where n is the size of K and ω < 2.376 is a quantity so that two n×n matrices can be multiplied in O(n ω ) time. The precomputed annotations permit answering queries about the independence or the triviality of p-cycles efficiently.\r\n\r\nUsing annotations of edges in 2-complexes, we derive better algorithms for computing optimal basis and optimal homologous cycles in 1 - dimensional homology. Specifically, for computing an optimal basis of H1(K) , we improve the previously known time complexity from O(n 4) to O(n ω + n 2 g ω − 1). Here n denotes the size of the 2-skeleton of K and g the rank of H1(K) . Computing an optimal cycle homologous to a given 1-cycle is NP-hard even for surfaces and an algorithm taking 2 O(g) nlogn time is known for surfaces. We extend this algorithm to work with arbitrary 2-complexes in O(n ω ) + 2 O(g) n 2logn time using annotations.\r\n","lang":"eng"}],"_id":"3129","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","status":"public","title":"Annotating simplices with a homology basis and its applications","intvolume":" 7357","oa_version":"Preprint"},{"day":"06","has_accepted_license":"1","scopus_import":1,"date_published":"2012-06-06T00:00:00Z","publication":"PLoS One","citation":{"mla":"Mileyko, Yuriy, et al. “Hierarchical Ordering of Reticular Networks.” PLoS One, vol. 7, no. 6, e36715, Public Library of Science, 2012, doi:10.1371/journal.pone.0036715.","short":"Y. Mileyko, H. Edelsbrunner, C. Price, J. Weitz, PLoS One 7 (2012).","chicago":"Mileyko, Yuriy, Herbert Edelsbrunner, Charles Price, and Joshua Weitz. “Hierarchical Ordering of Reticular Networks.” PLoS One. Public Library of Science, 2012. https://doi.org/10.1371/journal.pone.0036715.","ama":"Mileyko Y, Edelsbrunner H, Price C, Weitz J. Hierarchical ordering of reticular networks. PLoS One. 2012;7(6). doi:10.1371/journal.pone.0036715","ista":"Mileyko Y, Edelsbrunner H, Price C, Weitz J. 2012. Hierarchical ordering of reticular networks. PLoS One. 7(6), e36715.","apa":"Mileyko, Y., Edelsbrunner, H., Price, C., & Weitz, J. (2012). Hierarchical ordering of reticular networks. PLoS One. Public Library of Science. https://doi.org/10.1371/journal.pone.0036715","ieee":"Y. Mileyko, H. Edelsbrunner, C. Price, and J. Weitz, “Hierarchical ordering of reticular networks,” PLoS One, vol. 7, no. 6. Public Library of Science, 2012."},"abstract":[{"text":"The structure of hierarchical networks in biological and physical systems has long been characterized using the Horton-Strahler ordering scheme. The scheme assigns an integer order to each edge in the network based on the topology of branching such that the order increases from distal parts of the network (e.g., mountain streams or capillaries) to the "root" of the network (e.g., the river outlet or the aorta). However, Horton-Strahler ordering cannot be applied to networks with loops because they they create a contradiction in the edge ordering in terms of which edge precedes another in the hierarchy. Here, we present a generalization of the Horton-Strahler order to weighted planar reticular networks, where weights are assumed to correlate with the importance of network edges, e.g., weights estimated from edge widths may correlate to flow capacity. Our method assigns hierarchical levels not only to edges of the network, but also to its loops, and classifies the edges into reticular edges, which are responsible for loop formation, and tree edges. In addition, we perform a detailed and rigorous theoretical analysis of the sensitivity of the hierarchical levels to weight perturbations. In doing so, we show that the ordering of the reticular edges is more robust to noise in weight estimation than is the ordering of the tree edges. We discuss applications of this generalized Horton-Strahler ordering to the study of leaf venation and other biological networks.","lang":"eng"}],"issue":"6","type":"journal_article","pubrep_id":"385","oa_version":"Published Version","file":[{"relation":"main_file","file_id":"5922","date_updated":"2020-07-14T12:46:01Z","date_created":"2019-02-05T12:38:43Z","checksum":"515a98ad72e470752f03f13663dcaff8","file_name":"2012_PLoS_Mileyko.PDF","access_level":"open_access","content_type":"application/pdf","file_size":541583,"creator":"kschuh"}],"_id":"3159","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","ddc":["510"],"status":"public","title":"Hierarchical ordering of reticular networks","intvolume":" 7","month":"06","doi":"10.1371/journal.pone.0036715","language":[{"iso":"eng"}],"oa":1,"tmp":{"name":"Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)","legal_code_url":"https://creativecommons.org/licenses/by/4.0/legalcode","short":"CC BY (4.0)","image":"/images/cc_by.png"},"quality_controlled":"1","file_date_updated":"2020-07-14T12:46:01Z","publist_id":"3530","article_number":"e36715","author":[{"full_name":"Mileyko, Yuriy","last_name":"Mileyko","first_name":"Yuriy"},{"id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-9823-6833","first_name":"Herbert","last_name":"Edelsbrunner","full_name":"Edelsbrunner, Herbert"},{"full_name":"Price, Charles","last_name":"Price","first_name":"Charles"},{"first_name":"Joshua","last_name":"Weitz","full_name":"Weitz, Joshua"}],"date_created":"2018-12-11T12:01:44Z","date_updated":"2021-01-12T07:41:28Z","volume":7,"acknowledgement":"his work was supported by the National Science Foundation Plant Genome Research Program (grant 0820624 to H.E. and J.S.W.), the Defense Advanced Projects Research Agency (grant HR0011-09-1-0055 to H.E. and J.S.W.), and the European Science Foundation (under the Research Networking Programme on “Applied and Computational Algebraic Topology” run by H.E.). Joshua S. Weitz, Ph.D., holds a Career Award at the Scientific Interface from the Burroughs Wellcome Fund.\r\n\r\n\r\n\r\nDuring preparation of this manuscript the authors became aware of a related work by Katifori and Magnasco (arXiv:1110.1412v1), concurrently submitted and accepted for publication in PLoS ONE.","year":"2012","publication_status":"published","publisher":"Public Library of Science","department":[{"_id":"HeEd"}]},{"oa_version":"Submitted Version","file":[{"content_type":"application/pdf","file_size":280280,"creator":"system","file_name":"IST-2016-542-v1+1_2012-J-01-Poinculus.pdf","access_level":"open_access","date_created":"2018-12-12T10:15:00Z","date_updated":"2020-07-14T12:46:06Z","checksum":"d65f79775b51258a604ca5ec741297cc","relation":"main_file","file_id":"5116"}],"pubrep_id":"542","status":"public","title":"A point calculus for interlevel set homology","ddc":["000"],"intvolume":" 33","user_id":"3E5EF7F0-F248-11E8-B48F-1D18A9856A87","_id":"3310","abstract":[{"text":"The theory of persistent homology opens up the possibility to reason about topological features of a space or a function quantitatively and in combinatorial terms. We refer to this new angle at a classical subject within algebraic topology as a point calculus, which we present for the family of interlevel sets of a real-valued function. Our account of the subject is expository, devoid of proofs, and written for non-experts in algebraic topology.","lang":"eng"}],"issue":"11","type":"journal_article","date_published":"2012-08-01T00:00:00Z","page":"1436 - 1444","publication":"Pattern Recognition Letters","citation":{"ama":"Bendich P, Cabello S, Edelsbrunner H. A point calculus for interlevel set homology. Pattern Recognition Letters. 2012;33(11):1436-1444. doi:10.1016/j.patrec.2011.10.007","ista":"Bendich P, Cabello S, Edelsbrunner H. 2012. A point calculus for interlevel set homology. Pattern Recognition Letters. 33(11), 1436–1444.","apa":"Bendich, P., Cabello, S., & Edelsbrunner, H. (2012). A point calculus for interlevel set homology. Pattern Recognition Letters. Elsevier. https://doi.org/10.1016/j.patrec.2011.10.007","ieee":"P. Bendich, S. Cabello, and H. Edelsbrunner, “A point calculus for interlevel set homology,” Pattern Recognition Letters, vol. 33, no. 11. Elsevier, pp. 1436–1444, 2012.","mla":"Bendich, Paul, et al. “A Point Calculus for Interlevel Set Homology.” Pattern Recognition Letters, vol. 33, no. 11, Elsevier, 2012, pp. 1436–44, doi:10.1016/j.patrec.2011.10.007.","short":"P. Bendich, S. Cabello, H. Edelsbrunner, Pattern Recognition Letters 33 (2012) 1436–1444.","chicago":"Bendich, Paul, Sergio Cabello, and Herbert Edelsbrunner. “A Point Calculus for Interlevel Set Homology.” Pattern Recognition Letters. Elsevier, 2012. https://doi.org/10.1016/j.patrec.2011.10.007."},"day":"01","has_accepted_license":"1","scopus_import":1,"date_updated":"2021-01-12T07:42:34Z","date_created":"2018-12-11T12:02:36Z","volume":33,"author":[{"last_name":"Bendich","first_name":"Paul","id":"43F6EC54-F248-11E8-B48F-1D18A9856A87","full_name":"Bendich, Paul"},{"last_name":"Cabello","first_name":"Sergio","full_name":"Cabello, Sergio"},{"orcid":"0000-0002-9823-6833","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","last_name":"Edelsbrunner","first_name":"Herbert","full_name":"Edelsbrunner, Herbert"}],"publication_status":"published","department":[{"_id":"HeEd"}],"publisher":"Elsevier","acknowledgement":"Research by the third author is partially supported by the National Science Foundation (NSF) under grant DBI-0820624.","year":"2012","file_date_updated":"2020-07-14T12:46:06Z","publist_id":"3330","language":[{"iso":"eng"}],"doi":"10.1016/j.patrec.2011.10.007","quality_controlled":"1","oa":1,"month":"08"},{"article_processing_charge":"No","day":"01","scopus_import":"1","date_published":"2012-01-01T00:00:00Z","page":"63-78","article_type":"original","citation":{"short":"F. Pausinger, Journal of Mathematical Physics, Analysis, Geometry 8 (2012) 63–78.","mla":"Pausinger, Florian. “Elementary Solutions of the Bernstein Problem on Two Intervals.” Journal of Mathematical Physics, Analysis, Geometry, vol. 8, no. 1, B. Verkin Institute for Low Temperature Physics and Engineering, 2012, pp. 63–78.","chicago":"Pausinger, Florian. “Elementary Solutions of the Bernstein Problem on Two Intervals.” Journal of Mathematical Physics, Analysis, Geometry. B. Verkin Institute for Low Temperature Physics and Engineering, 2012.","ama":"Pausinger F. Elementary solutions of the Bernstein problem on two intervals. Journal of Mathematical Physics, Analysis, Geometry. 2012;8(1):63-78.","apa":"Pausinger, F. (2012). Elementary solutions of the Bernstein problem on two intervals. Journal of Mathematical Physics, Analysis, Geometry. B. Verkin Institute for Low Temperature Physics and Engineering.","ieee":"F. Pausinger, “Elementary solutions of the Bernstein problem on two intervals,” Journal of Mathematical Physics, Analysis, Geometry, vol. 8, no. 1. B. Verkin Institute for Low Temperature Physics and Engineering, pp. 63–78, 2012.","ista":"Pausinger F. 2012. Elementary solutions of the Bernstein problem on two intervals. Journal of Mathematical Physics, Analysis, Geometry. 8(1), 63–78."},"publication":"Journal of Mathematical Physics, Analysis, Geometry","issue":"1","abstract":[{"text":"First we note that the best polynomial approximation to vertical bar x vertical bar on the set, which consists of an interval on the positive half-axis and a point on the negative half-axis, can be given by means of the classical Chebyshev polynomials. Then we explore the cases when a solution of the related problem on two intervals can be given in elementary functions.","lang":"eng"}],"type":"journal_article","oa_version":"Published Version","intvolume":" 8","status":"public","title":"Elementary solutions of the Bernstein problem on two intervals","_id":"6588","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","publication_identifier":{"issn":["1812-9471"]},"month":"01","language":[{"iso":"eng"}],"isi":1,"quality_controlled":"1","main_file_link":[{"open_access":"1","url":"http://mi.mathnet.ru/eng/jmag525"}],"oa":1,"external_id":{"isi":["000301173600004"]},"volume":8,"date_created":"2019-06-27T08:16:56Z","date_updated":"2023-10-16T09:41:31Z","author":[{"orcid":"0000-0002-8379-3768","id":"2A77D7A2-F248-11E8-B48F-1D18A9856A87","last_name":"Pausinger","first_name":"Florian","full_name":"Pausinger, Florian"}],"publisher":"B. Verkin Institute for Low Temperature Physics and Engineering","department":[{"_id":"HeEd"}],"publication_status":"published","acknowledgement":"This work is supported by the Austrian Science Fund (FWF), Project P22025-N18.\r\n","year":"2012"},{"date_created":"2018-12-11T12:00:18Z","date_updated":"2023-10-17T11:40:39Z","volume":67,"oa_version":"None","author":[{"full_name":"Edelsbrunner, Herbert","last_name":"Edelsbrunner","first_name":"Herbert","orcid":"0000-0002-9823-6833","id":"3FB178DA-F248-11E8-B48F-1D18A9856A87"},{"full_name":"Strelkova, Nataliya","first_name":"Nataliya","last_name":"Strelkova"}],"title":"On the configuration space for the shortest networks","status":"public","publication_status":"published","intvolume":" 67","publisher":"Russian Academy of Sciences","department":[{"_id":"HeEd"}],"_id":"2912","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","year":"2012","issue":"6","publist_id":"3831","type":"journal_article","language":[{"iso":"eng"}],"date_published":"2012-10-01T00:00:00Z","doi":"10.4213/rm9503","quality_controlled":"1","page":"1167–1168","publication":"Russian Mathematical Surveys","citation":{"chicago":"Edelsbrunner, Herbert, and Nataliya Strelkova. “On the Configuration Space for the Shortest Networks.” Russian Mathematical Surveys. Russian Academy of Sciences, 2012. https://doi.org/10.4213/rm9503.","mla":"Edelsbrunner, Herbert, and Nataliya Strelkova. “On the Configuration Space for the Shortest Networks.” Russian Mathematical Surveys, vol. 67, no. 6, Russian Academy of Sciences, 2012, pp. 1167–1168, doi:10.4213/rm9503.","short":"H. Edelsbrunner, N. Strelkova, Russian Mathematical Surveys 67 (2012) 1167–1168.","ista":"Edelsbrunner H, Strelkova N. 2012. On the configuration space for the shortest networks. Russian Mathematical Surveys. 67(6), 1167–1168.","ieee":"H. Edelsbrunner and N. Strelkova, “On the configuration space for the shortest networks,” Russian Mathematical Surveys, vol. 67, no. 6. Russian Academy of Sciences, pp. 1167–1168, 2012.","apa":"Edelsbrunner, H., & Strelkova, N. (2012). On the configuration space for the shortest networks. Russian Mathematical Surveys. Russian Academy of Sciences. https://doi.org/10.4213/rm9503","ama":"Edelsbrunner H, Strelkova N. On the configuration space for the shortest networks. Russian Mathematical Surveys. 2012;67(6):1167–1168. doi:10.4213/rm9503"},"day":"01","month":"10","article_processing_charge":"No"},{"publist_id":"3572","abstract":[{"lang":"eng","text":"When searching for characteristic subpatterns in potentially noisy graph data, it appears self-evident that having multiple observations would be better than having just one. However, it turns out that the inconsistencies introduced when different graph instances have different edge sets pose a serious challenge. In this work we address this challenge for the problem of finding maximum weighted cliques.\r\n We introduce the concept of most persistent soft-clique. This is subset of vertices, that 1) is almost fully or at least densely connected, 2) occurs in all or almost all graph instances, and 3) has the maximum weight. We present a measure of clique-ness, that essentially counts the number of edge missing to make a subset of vertices into a clique. With this measure, we show that the problem of finding the most persistent soft-clique problem can be cast either as: a) a max-min two person game optimization problem, or b) a min-min soft margin optimization problem. Both formulations lead to the same solution when using a partial Lagrangian method to solve the optimization problems. By experiments on synthetic data and on real social network data, we show that the proposed method is able to reliably find soft cliques in graph data, even if that is distorted by random noise or unreliable observations."}],"type":"conference","oa_version":"Preprint","date_created":"2018-12-11T12:01:33Z","date_updated":"2023-10-17T11:55:06Z","author":[{"full_name":"Quadrianto, Novi","first_name":"Novi","last_name":"Quadrianto"},{"id":"40C20FD2-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-8622-7887","first_name":"Christoph","last_name":"Lampert","full_name":"Lampert, Christoph"},{"full_name":"Chen, Chao","last_name":"Chen","first_name":"Chao","id":"3E92416E-F248-11E8-B48F-1D18A9856A87"}],"publisher":"ML Research Press","department":[{"_id":"ChLa"},{"_id":"HeEd"}],"title":"The most persistent soft-clique in a set of sampled graphs","publication_status":"published","status":"public","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"3127","year":"2012","article_processing_charge":"No","month":"06","day":"01","scopus_import":"1","language":[{"iso":"eng"}],"date_published":"2012-06-01T00:00:00Z","conference":{"location":"Edinburgh, United Kingdom","start_date":"2012-06-26","end_date":"2012-07-01","name":"ICML: International Conference on Machine Learning"},"page":"211-218","quality_controlled":"1","main_file_link":[{"open_access":"1","url":"http://arxiv.org/abs/1206.4652"}],"citation":{"short":"N. Quadrianto, C. Lampert, C. Chen, in:, Proceedings of the 29th International Conference on Machine Learning, ML Research Press, 2012, pp. 211–218.","mla":"Quadrianto, Novi, et al. “The Most Persistent Soft-Clique in a Set of Sampled Graphs.” Proceedings of the 29th International Conference on Machine Learning, ML Research Press, 2012, pp. 211–18.","chicago":"Quadrianto, Novi, Christoph Lampert, and Chao Chen. “The Most Persistent Soft-Clique in a Set of Sampled Graphs.” In Proceedings of the 29th International Conference on Machine Learning, 211–18. ML Research Press, 2012.","ama":"Quadrianto N, Lampert C, Chen C. The most persistent soft-clique in a set of sampled graphs. In: Proceedings of the 29th International Conference on Machine Learning. ML Research Press; 2012:211-218.","apa":"Quadrianto, N., Lampert, C., & Chen, C. (2012). The most persistent soft-clique in a set of sampled graphs. In Proceedings of the 29th International Conference on Machine Learning (pp. 211–218). Edinburgh, United Kingdom: ML Research Press.","ieee":"N. Quadrianto, C. Lampert, and C. Chen, “The most persistent soft-clique in a set of sampled graphs,” in Proceedings of the 29th International Conference on Machine Learning, Edinburgh, United Kingdom, 2012, pp. 211–218.","ista":"Quadrianto N, Lampert C, Chen C. 2012. The most persistent soft-clique in a set of sampled graphs. Proceedings of the 29th International Conference on Machine Learning. ICML: International Conference on Machine Learning, 211–218."},"oa":1,"publication":"Proceedings of the 29th International Conference on Machine Learning"},{"day":"01","article_processing_charge":"No","has_accepted_license":"1","scopus_import":"1","date_published":"2012-01-01T00:00:00Z","publication":"Journal de Theorie des Nombres des Bordeaux","citation":{"ama":"Pausinger F. Weak multipliers for generalized van der Corput sequences. Journal de Theorie des Nombres des Bordeaux. 2012;24(3):729-749. doi:10.5802/jtnb.819","ista":"Pausinger F. 2012. Weak multipliers for generalized van der Corput sequences. Journal de Theorie des Nombres des Bordeaux. 24(3), 729–749.","ieee":"F. Pausinger, “Weak multipliers for generalized van der Corput sequences,” Journal de Theorie des Nombres des Bordeaux, vol. 24, no. 3. Université de Bordeaux, pp. 729–749, 2012.","apa":"Pausinger, F. (2012). Weak multipliers for generalized van der Corput sequences. Journal de Theorie Des Nombres Des Bordeaux. Université de Bordeaux. https://doi.org/10.5802/jtnb.819","mla":"Pausinger, Florian. “Weak Multipliers for Generalized van Der Corput Sequences.” Journal de Theorie Des Nombres Des Bordeaux, vol. 24, no. 3, Université de Bordeaux, 2012, pp. 729–49, doi:10.5802/jtnb.819.","short":"F. Pausinger, Journal de Theorie Des Nombres Des Bordeaux 24 (2012) 729–749.","chicago":"Pausinger, Florian. “Weak Multipliers for Generalized van Der Corput Sequences.” Journal de Theorie Des Nombres Des Bordeaux. Université de Bordeaux, 2012. https://doi.org/10.5802/jtnb.819."},"article_type":"original","page":"729 - 749","abstract":[{"text":"Generalized van der Corput sequences are onedimensional, infinite sequences in the unit interval. They are generated from permutations in integer base b and are the building blocks of the multi-dimensional Halton sequences. Motivated by recent progress of Atanassov on the uniform distribution behavior of Halton sequences, we study, among others, permutations of the form P(i) = ai (mod b) for coprime integers a and b. We show that multipliers a that either divide b - 1 or b + 1 generate van der Corput sequences with weak distribution properties. We give explicit lower bounds for the asymptotic distribution behavior of these sequences and relate them to sequences generated from the identity permutation in smaller bases, which are, due to Faure, the weakest distributed generalized van der Corput sequences.","lang":"eng"},{"text":"Les suites de Van der Corput généralisées sont dessuites unidimensionnelles et infinies dans l’intervalle de l’unité.Elles sont générées par permutations des entiers de la basebetsont les éléments constitutifs des suites multi-dimensionnelles deHalton. Suites aux progrès récents d’Atanassov concernant le com-portement de distribution uniforme des suites de Halton nous nousintéressons aux permutations de la formuleP(i) =ai(modb)pour les entiers premiers entre euxaetb. Dans cet article nousidentifions des multiplicateursagénérant des suites de Van derCorput ayant une mauvaise distribution. Nous donnons les bornesinférieures explicites pour cette distribution asymptotique asso-ciée à ces suites et relions ces dernières aux suites générées parpermutation d’identité, qui sont, selon Faure, les moins bien dis-tribuées des suites généralisées de Van der Corput dans une basedonnée.","lang":"fre"}],"issue":"3","type":"journal_article","oa_version":"Published Version","file":[{"access_level":"open_access","file_name":"JTNB_2012__24_3_729_0.pdf","content_type":"application/pdf","file_size":819275,"creator":"dernst","relation":"main_file","file_id":"7819","checksum":"6954bfe9d7f4119fbdda7a11cf0f5c67","date_updated":"2020-07-14T12:45:52Z","date_created":"2020-05-11T12:40:39Z"}],"_id":"2904","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","ddc":["510"],"title":"Weak multipliers for generalized van der Corput sequences","status":"public","intvolume":" 24","month":"01","publication_identifier":{"issn":["1246-7405"],"eissn":["2118-8572"]},"doi":"10.5802/jtnb.819","language":[{"iso":"eng"}],"oa":1,"quality_controlled":"1","file_date_updated":"2020-07-14T12:45:52Z","publist_id":"3843","author":[{"full_name":"Pausinger, Florian","orcid":"0000-0002-8379-3768","id":"2A77D7A2-F248-11E8-B48F-1D18A9856A87","last_name":"Pausinger","first_name":"Florian"}],"date_updated":"2023-10-18T07:53:47Z","date_created":"2018-12-11T12:00:15Z","volume":24,"year":"2012","publication_status":"published","department":[{"_id":"HeEd"}],"publisher":"Université de Bordeaux"},{"article_type":"original","quality_controlled":"1","page":"152 - 160","publication":"Modeling and Analysis of Information Systems","citation":{"ista":"Edelsbrunner H, Musin O, Ukhalov A, Yakimova O, Alexeev V, Bogaevskaya V, Gorohov A, Preobrazhenskaya M. 2012. Fractal and computational geometry for generalizing cartographic objects. Modeling and Analysis of Information Systems. 19(6), 152–160.","ieee":"H. Edelsbrunner et al., “Fractal and computational geometry for generalizing cartographic objects,” Modeling and Analysis of Information Systems, vol. 19, no. 6. Russian Academy of Sciences, pp. 152–160, 2012.","apa":"Edelsbrunner, H., Musin, O., Ukhalov, A., Yakimova, O., Alexeev, V., Bogaevskaya, V., … Preobrazhenskaya, M. (2012). Fractal and computational geometry for generalizing cartographic objects. Modeling and Analysis of Information Systems. Russian Academy of Sciences.","ama":"Edelsbrunner H, Musin O, Ukhalov A, et al. Fractal and computational geometry for generalizing cartographic objects. Modeling and Analysis of Information Systems. 2012;19(6):152-160.","chicago":"Edelsbrunner, Herbert, Oleg Musin, Alexey Ukhalov, Olga Yakimova, Vladislav Alexeev, Victoriya Bogaevskaya, Andrey Gorohov, and Margarita Preobrazhenskaya. “Fractal and computational geometry for generalizing cartographic objects.” Modeling and Analysis of Information Systems. Russian Academy of Sciences, 2012.","mla":"Edelsbrunner, Herbert, et al. “Fractal and computational geometry for generalizing cartographic objects.” Modeling and Analysis of Information Systems, vol. 19, no. 6, Russian Academy of Sciences, 2012, pp. 152–60.","short":"H. Edelsbrunner, O. Musin, A. Ukhalov, O. Yakimova, V. Alexeev, V. Bogaevskaya, A. Gorohov, M. Preobrazhenskaya, Modeling and Analysis of Information Systems 19 (2012) 152–160."},"oa":1,"main_file_link":[{"open_access":"1","url":"http://mi.mathnet.ru/eng/mais280"}],"language":[{"iso":"rus"}],"date_published":"2012-12-01T00:00:00Z","day":"01","month":"12","article_processing_charge":"No","publication_status":"published","status":"public","title":"Fractal and computational geometry for generalizing cartographic objects","intvolume":" 19","department":[{"_id":"HeEd"}],"publisher":"Russian Academy of Sciences","_id":"2902","year":"2012","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","date_updated":"2023-10-18T07:34:45Z","date_created":"2018-12-11T12:00:15Z","oa_version":"Published Version","volume":19,"author":[{"id":"3FB178DA-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-9823-6833","first_name":"Herbert","last_name":"Edelsbrunner","full_name":"Edelsbrunner, Herbert"},{"full_name":"Musin, Oleg","first_name":"Oleg","last_name":"Musin"},{"first_name":"Alexey","last_name":"Ukhalov","full_name":"Ukhalov, Alexey"},{"last_name":"Yakimova","first_name":"Olga","full_name":"Yakimova, Olga"},{"first_name":"Vladislav","last_name":"Alexeev","full_name":"Alexeev, Vladislav"},{"full_name":"Bogaevskaya, Victoriya","last_name":"Bogaevskaya","first_name":"Victoriya"},{"full_name":"Gorohov, Andrey","first_name":"Andrey","last_name":"Gorohov"},{"last_name":"Preobrazhenskaya","first_name":"Margarita","full_name":"Preobrazhenskaya, Margarita"}],"type":"journal_article","abstract":[{"text":"We present an algorithm for simplifying linear cartographic objects and results obtained with a computer program implementing this algorithm. ","lang":"eng"}],"publist_id":"3845","issue":"6"},{"language":[{"iso":"eng"}],"date_published":"2011-12-01T00:00:00Z","conference":{"end_date":"2011-12-14","location":"Granada, Spain","start_date":"2011-12-12","name":"NIPS: Neural Information Processing Systems"},"page":"1827 - 1835","quality_controlled":"1","citation":{"apa":"Ion, A., Carreira, J., & Sminchisescu, C. (2011). Probabilistic joint image segmentation and labeling. In NIPS Proceedings (Vol. 24, pp. 1827–1835). Granada, Spain: Neural Information Processing Systems Foundation.","ieee":"A. Ion, J. Carreira, and C. Sminchisescu, “Probabilistic joint image segmentation and labeling,” in NIPS Proceedings, Granada, Spain, 2011, vol. 24, pp. 1827–1835.","ista":"Ion A, Carreira J, Sminchisescu C. 2011. Probabilistic joint image segmentation and labeling. NIPS Proceedings. NIPS: Neural Information Processing Systems vol. 24, 1827–1835.","ama":"Ion A, Carreira J, Sminchisescu C. Probabilistic joint image segmentation and labeling. In: NIPS Proceedings. Vol 24. Neural Information Processing Systems Foundation; 2011:1827-1835.","chicago":"Ion, Adrian, Joao Carreira, and Cristian Sminchisescu. “Probabilistic Joint Image Segmentation and Labeling.” In NIPS Proceedings, 24:1827–35. Neural Information Processing Systems Foundation, 2011.","short":"A. Ion, J. Carreira, C. Sminchisescu, in:, NIPS Proceedings, Neural Information Processing Systems Foundation, 2011, pp. 1827–1835.","mla":"Ion, Adrian, et al. “Probabilistic Joint Image Segmentation and Labeling.” NIPS Proceedings, vol. 24, Neural Information Processing Systems Foundation, 2011, pp. 1827–35."},"publication":"NIPS Proceedings","day":"01","month":"12","scopus_import":1,"volume":24,"oa_version":"None","date_created":"2018-12-11T12:02:21Z","date_updated":"2021-01-12T07:42:15Z","author":[{"full_name":"Ion, Adrian","last_name":"Ion","first_name":"Adrian","id":"29F89302-F248-11E8-B48F-1D18A9856A87"},{"last_name":"Carreira","first_name":"Joao","full_name":"Carreira, Joao"},{"last_name":"Sminchisescu","first_name":"Cristian","full_name":"Sminchisescu, Cristian"}],"publisher":"Neural Information Processing Systems Foundation","intvolume":" 24","department":[{"_id":"HeEd"}],"publication_status":"published","title":"Probabilistic joint image segmentation and labeling","status":"public","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"3266","year":"2011","publist_id":"3381","abstract":[{"lang":"eng","text":"We present a joint image segmentation and labeling model (JSL) which, given a bag of figure-ground segment hypotheses extracted at multiple image locations and scales, constructs a joint probability distribution over both the compatible image interpretations (tilings or image segmentations) composed from those segments, and over their labeling into categories. The process of drawing samples from the joint distribution can be interpreted as first sampling tilings, modeled as maximal cliques, from a graph connecting spatially non-overlapping segments in the bag [1], followed by sampling labels for those segments, conditioned on the choice of a particular tiling. We learn the segmentation and labeling parameters jointly, based on Maximum Likelihood with a novel Incremental Saddle Point estimation procedure. The partition function over tilings and labelings is increasingly more accurately approximated by including incorrect configurations that a not-yet-competent model rates probable during learning. We show that the proposed methodologymatches the current state of the art in the Stanford dataset [2], as well as in VOC2010, where 41.7% accuracy on the test set is achieved."}],"type":"conference"}]