[{"ec_funded":1,"publication_status":"published","publisher":"ACM","department":[{"_id":"DaAl"}],"year":"2019","date_updated":"2023-09-08T11:37:22Z","date_created":"2019-10-08T12:57:14Z","author":[{"first_name":"Klaus-Tycho","last_name":"Foerster","full_name":"Foerster, Klaus-Tycho"},{"id":"C5402D42-15BC-11E9-A202-CA2BE6697425","last_name":"Korhonen","first_name":"Janne","full_name":"Korhonen, Janne"},{"first_name":"Joel","last_name":"Rybicki","id":"334EFD2E-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-6432-6646","full_name":"Rybicki, Joel"},{"last_name":"Schmid","first_name":"Stefan","full_name":"Schmid, Stefan"}],"month":"08","publication_identifier":{"isbn":["9781450362177"]},"isi":1,"quality_controlled":"1","project":[{"_id":"260C2330-B435-11E9-9278-68D0E5697425","grant_number":"754411","call_identifier":"H2020","name":"ISTplus - Postdoctoral Fellowships"}],"oa":1,"external_id":{"isi":["000570442000037"],"arxiv":["1905.03012"]},"main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1905.03012"}],"language":[{"iso":"eng"}],"conference":{"name":"PODC: Symposium on Principles of Distributed Computing","end_date":"2019-08-02","location":"Toronto, ON, Canada","start_date":"2019-07-29"},"doi":"10.1145/3293611.3331581","type":"conference","abstract":[{"text":"This paper investigates the power of preprocessing in the CONGEST model. Schmid and Suomela (ACM HotSDN 2013) introduced the SUPPORTED CONGEST model to study the application of distributed algorithms in Software-Defined Networks (SDNs). In this paper, we show that a large class of lower bounds in the CONGEST model still hold in the SUPPORTED model, highlighting the robustness of these bounds. This also raises the question how much does\r\npreprocessing help in the CONGEST model.","lang":"eng"}],"title":"Does preprocessing help under congestion?","status":"public","_id":"6935","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","oa_version":"Preprint","scopus_import":"1","day":"01","article_processing_charge":"No","page":"259-261","publication":"Proceedings of the 2019 ACM Symposium on Principles of Distributed Computing","citation":{"apa":"Foerster, K.-T., Korhonen, J., Rybicki, J., & Schmid, S. (2019). Does preprocessing help under congestion? In Proceedings of the 2019 ACM Symposium on Principles of Distributed Computing (pp. 259–261). Toronto, ON, Canada: ACM. https://doi.org/10.1145/3293611.3331581","ieee":"K.-T. Foerster, J. Korhonen, J. Rybicki, and S. Schmid, “Does preprocessing help under congestion?,” in Proceedings of the 2019 ACM Symposium on Principles of Distributed Computing, Toronto, ON, Canada, 2019, pp. 259–261.","ista":"Foerster K-T, Korhonen J, Rybicki J, Schmid S. 2019. Does preprocessing help under congestion? Proceedings of the 2019 ACM Symposium on Principles of Distributed Computing. PODC: Symposium on Principles of Distributed Computing, 259–261.","ama":"Foerster K-T, Korhonen J, Rybicki J, Schmid S. Does preprocessing help under congestion? In: Proceedings of the 2019 ACM Symposium on Principles of Distributed Computing. ACM; 2019:259-261. doi:10.1145/3293611.3331581","chicago":"Foerster, Klaus-Tycho, Janne Korhonen, Joel Rybicki, and Stefan Schmid. “Does Preprocessing Help under Congestion?” In Proceedings of the 2019 ACM Symposium on Principles of Distributed Computing, 259–61. ACM, 2019. https://doi.org/10.1145/3293611.3331581.","short":"K.-T. Foerster, J. Korhonen, J. Rybicki, S. Schmid, in:, Proceedings of the 2019 ACM Symposium on Principles of Distributed Computing, ACM, 2019, pp. 259–261.","mla":"Foerster, Klaus-Tycho, et al. “Does Preprocessing Help under Congestion?” Proceedings of the 2019 ACM Symposium on Principles of Distributed Computing, ACM, 2019, pp. 259–61, doi:10.1145/3293611.3331581."},"date_published":"2019-08-01T00:00:00Z"},{"license":"https://creativecommons.org/licenses/by/4.0/","file_date_updated":"2020-07-14T12:44:47Z","publist_id":"7785","ec_funded":1,"publication_status":"published","department":[{"_id":"CaGu"}],"publisher":"Springer","year":"2019","date_updated":"2023-09-08T13:23:42Z","date_created":"2018-12-11T11:44:50Z","volume":65,"author":[{"full_name":"Nikolic, Nela","first_name":"Nela","last_name":"Nikolic","id":"42D9CABC-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-9068-6090"}],"month":"02","quality_controlled":"1","isi":1,"project":[{"call_identifier":"FP7","name":"International IST Postdoc Fellowship Programme","_id":"25681D80-B435-11E9-9278-68D0E5697425","grant_number":"291734"}],"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"},"oa":1,"external_id":{"isi":["000456958800017"]},"language":[{"iso":"eng"}],"doi":"10.1007/s00294-018-0879-8","type":"journal_article","abstract":[{"lang":"eng","text":"Autoregulation is the direct modulation of gene expression by the product of the corresponding gene. Autoregulation of bacterial gene expression has been mostly studied at the transcriptional level, when a protein acts as the cognate transcriptional repressor. A recent study investigating dynamics of the bacterial toxin–antitoxin MazEF system has shown how autoregulation at both the transcriptional and post-transcriptional levels affects the heterogeneity of Escherichia coli populations. Toxin–antitoxin systems hold a crucial but still elusive part in bacterial response to stress. This perspective highlights how these modules can also serve as a great model system for investigating basic concepts in gene regulation. However, as the genomic background and environmental conditions substantially influence toxin activation, it is important to study (auto)regulation of toxin–antitoxin systems in well-defined setups as well as in conditions that resemble the environmental niche."}],"issue":"1","title":"Autoregulation of bacterial gene expression: lessons from the MazEF toxin–antitoxin system","status":"public","ddc":["570"],"intvolume":" 65","_id":"138","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","file":[{"access_level":"open_access","file_name":"2019_CurrentGenetics_Nikolic.pdf","file_size":776399,"content_type":"application/pdf","creator":"dernst","relation":"main_file","file_id":"5930","checksum":"6779708b0b632a1a6ed28c56f5161142","date_created":"2019-02-06T07:50:58Z","date_updated":"2020-07-14T12:44:47Z"}],"oa_version":"Published Version","scopus_import":"1","day":"01","has_accepted_license":"1","article_processing_charge":"Yes (via OA deal)","page":"133-138","publication":"Current Genetics","citation":{"ieee":"N. Nikolic, “Autoregulation of bacterial gene expression: lessons from the MazEF toxin–antitoxin system,” Current Genetics, vol. 65, no. 1. Springer, pp. 133–138, 2019.","apa":"Nikolic, N. (2019). Autoregulation of bacterial gene expression: lessons from the MazEF toxin–antitoxin system. Current Genetics. Springer. https://doi.org/10.1007/s00294-018-0879-8","ista":"Nikolic N. 2019. Autoregulation of bacterial gene expression: lessons from the MazEF toxin–antitoxin system. Current Genetics. 65(1), 133–138.","ama":"Nikolic N. Autoregulation of bacterial gene expression: lessons from the MazEF toxin–antitoxin system. Current Genetics. 2019;65(1):133-138. doi:10.1007/s00294-018-0879-8","chicago":"Nikolic, Nela. “Autoregulation of Bacterial Gene Expression: Lessons from the MazEF Toxin–Antitoxin System.” Current Genetics. Springer, 2019. https://doi.org/10.1007/s00294-018-0879-8.","short":"N. Nikolic, Current Genetics 65 (2019) 133–138.","mla":"Nikolic, Nela. “Autoregulation of Bacterial Gene Expression: Lessons from the MazEF Toxin–Antitoxin System.” Current Genetics, vol. 65, no. 1, Springer, 2019, pp. 133–38, doi:10.1007/s00294-018-0879-8."},"date_published":"2019-02-01T00:00:00Z"},{"intvolume":" 266","status":"public","title":"Bi-Sobolev solutions to the prescribed Jacobian inequality in the plane with L p data and applications to nonlinear elasticity","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","_id":"151","oa_version":"Preprint","type":"journal_article","issue":"1","abstract":[{"lang":"eng","text":"We construct planar bi-Sobolev mappings whose local volume distortion is bounded from below by a given function f∈Lp with p>1. More precisely, for any 1<q<(p+1)/2 we construct W1,q-bi-Sobolev maps with identity boundary conditions; for f∈L∞, we provide bi-Lipschitz maps. The basic building block of our construction are bi-Lipschitz maps which stretch a given compact subset of the unit square by a given factor while preserving the boundary. The construction of these stretching maps relies on a slight strengthening of the celebrated covering result of Alberti, Csörnyei, and Preiss for measurable planar sets in the case of compact sets. We apply our result to a model functional in nonlinear elasticity, the integrand of which features fast blowup as the Jacobian determinant of the deformation becomes small. For such functionals, the derivation of the equilibrium equations for minimizers requires an additional regularization of test functions, which our maps provide."}],"page":"257 - 311","citation":{"ista":"Fischer JL, Kneuss O. 2019. Bi-Sobolev solutions to the prescribed Jacobian inequality in the plane with L p data and applications to nonlinear elasticity. Journal of Differential Equations. 266(1), 257–311.","ieee":"J. L. Fischer and O. Kneuss, “Bi-Sobolev solutions to the prescribed Jacobian inequality in the plane with L p data and applications to nonlinear elasticity,” Journal of Differential Equations, vol. 266, no. 1. Elsevier, pp. 257–311, 2019.","apa":"Fischer, J. L., & Kneuss, O. (2019). Bi-Sobolev solutions to the prescribed Jacobian inequality in the plane with L p data and applications to nonlinear elasticity. Journal of Differential Equations. Elsevier. https://doi.org/10.1016/j.jde.2018.07.045","ama":"Fischer JL, Kneuss O. Bi-Sobolev solutions to the prescribed Jacobian inequality in the plane with L p data and applications to nonlinear elasticity. Journal of Differential Equations. 2019;266(1):257-311. doi:10.1016/j.jde.2018.07.045","chicago":"Fischer, Julian L, and Olivier Kneuss. “Bi-Sobolev Solutions to the Prescribed Jacobian Inequality in the Plane with L p Data and Applications to Nonlinear Elasticity.” Journal of Differential Equations. Elsevier, 2019. https://doi.org/10.1016/j.jde.2018.07.045.","mla":"Fischer, Julian L., and Olivier Kneuss. “Bi-Sobolev Solutions to the Prescribed Jacobian Inequality in the Plane with L p Data and Applications to Nonlinear Elasticity.” Journal of Differential Equations, vol. 266, no. 1, Elsevier, 2019, pp. 257–311, doi:10.1016/j.jde.2018.07.045.","short":"J.L. Fischer, O. Kneuss, Journal of Differential Equations 266 (2019) 257–311."},"publication":"Journal of Differential Equations","date_published":"2019-01-05T00:00:00Z","scopus_import":"1","article_processing_charge":"No","day":"05","department":[{"_id":"JuFi"}],"publisher":"Elsevier","publication_status":"published","year":"2019","volume":266,"date_created":"2018-12-11T11:44:54Z","date_updated":"2023-09-08T13:25:35Z","author":[{"full_name":"Fischer, Julian L","id":"2C12A0B0-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-0479-558X","first_name":"Julian L","last_name":"Fischer"},{"full_name":"Kneuss, Olivier","last_name":"Kneuss","first_name":"Olivier"}],"publist_id":"7770","quality_controlled":"1","isi":1,"external_id":{"arxiv":["1408.1587"],"isi":["000449108500010"]},"oa":1,"main_file_link":[{"url":"https://arxiv.org/abs/1408.1587","open_access":"1"}],"language":[{"iso":"eng"}],"doi":"10.1016/j.jde.2018.07.045","month":"01"},{"language":[{"iso":"eng"}],"doi":"10.1111/jnc.14601","project":[{"_id":"25D92700-B435-11E9-9278-68D0E5697425","grant_number":"LS13-002","name":"Mapping Cell-Type Specificity of the Genomic Imprintome in the Brain"},{"grant_number":"RGP0053/2014","_id":"25D7962E-B435-11E9-9278-68D0E5697425","name":"Quantitative Structure-Function Analysis of Cerebral Cortex Assembly at Clonal Level"},{"_id":"25D61E48-B435-11E9-9278-68D0E5697425","grant_number":"618444","name":"Molecular Mechanisms of Cerebral Cortex Development","call_identifier":"FP7"},{"name":"Principles of Neural Stem Cell Lineage Progression in Cerebral Cortex Development","call_identifier":"H2020","grant_number":"725780","_id":"260018B0-B435-11E9-9278-68D0E5697425"}],"quality_controlled":"1","isi":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"},"oa":1,"external_id":{"isi":["000462680200002"]},"month":"04","volume":149,"date_updated":"2023-09-11T13:40:26Z","date_created":"2018-12-11T11:44:14Z","author":[{"full_name":"Amberg, Nicole","orcid":"0000-0002-3183-8207","id":"4CD6AAC6-F248-11E8-B48F-1D18A9856A87","last_name":"Amberg","first_name":"Nicole"},{"orcid":"0000-0002-7903-3010","id":"2D6B7A9A-F248-11E8-B48F-1D18A9856A87","last_name":"Laukoter","first_name":"Susanne","full_name":"Laukoter, Susanne"},{"full_name":"Hippenmeyer, Simon","last_name":"Hippenmeyer","first_name":"Simon","orcid":"0000-0003-2279-1061","id":"37B36620-F248-11E8-B48F-1D18A9856A87"}],"publisher":"Wiley","department":[{"_id":"SiHi"}],"publication_status":"published","year":"2019","acknowledgement":" This work was supported by IST Austria institutional funds; NÖ Forschung und Bildung \r\nn[f+b] (C13-002) to SH; a program grant from the Human Frontiers Science Program (RGP0053/2014) to SH; the People Programme (Marie Curie Actions) of the European Union’s Seventh Framework Programme (FP7/2007-2013) under REA grant agreement No 618444 to SH, and the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 725780 LinPro)to SH.\r\n","ec_funded":1,"file_date_updated":"2020-07-14T12:45:45Z","date_published":"2019-04-01T00:00:00Z","page":"12-26","article_type":"review","citation":{"ama":"Amberg N, Laukoter S, Hippenmeyer S. Epigenetic cues modulating the generation of cell type diversity in the cerebral cortex. Journal of Neurochemistry. 2019;149(1):12-26. doi:10.1111/jnc.14601","ista":"Amberg N, Laukoter S, Hippenmeyer S. 2019. Epigenetic cues modulating the generation of cell type diversity in the cerebral cortex. Journal of Neurochemistry. 149(1), 12–26.","apa":"Amberg, N., Laukoter, S., & Hippenmeyer, S. (2019). Epigenetic cues modulating the generation of cell type diversity in the cerebral cortex. Journal of Neurochemistry. Wiley. https://doi.org/10.1111/jnc.14601","ieee":"N. Amberg, S. Laukoter, and S. Hippenmeyer, “Epigenetic cues modulating the generation of cell type diversity in the cerebral cortex,” Journal of Neurochemistry, vol. 149, no. 1. Wiley, pp. 12–26, 2019.","mla":"Amberg, Nicole, et al. “Epigenetic Cues Modulating the Generation of Cell Type Diversity in the Cerebral Cortex.” Journal of Neurochemistry, vol. 149, no. 1, Wiley, 2019, pp. 12–26, doi:10.1111/jnc.14601.","short":"N. Amberg, S. Laukoter, S. Hippenmeyer, Journal of Neurochemistry 149 (2019) 12–26.","chicago":"Amberg, Nicole, Susanne Laukoter, and Simon Hippenmeyer. “Epigenetic Cues Modulating the Generation of Cell Type Diversity in the Cerebral Cortex.” Journal of Neurochemistry. Wiley, 2019. https://doi.org/10.1111/jnc.14601."},"publication":"Journal of Neurochemistry","article_processing_charge":"Yes (via OA deal)","has_accepted_license":"1","day":"01","scopus_import":"1","oa_version":"Published Version","file":[{"checksum":"db027721a95d36f5de36aadcd0bdf7e6","date_updated":"2020-07-14T12:45:45Z","date_created":"2020-01-07T13:35:52Z","relation":"main_file","file_id":"7239","file_size":889709,"content_type":"application/pdf","creator":"kschuh","access_level":"open_access","file_name":"2019_Wiley_Amberg.pdf"}],"intvolume":" 149","title":"Epigenetic cues modulating the generation of cell type diversity in the cerebral cortex","status":"public","ddc":["570"],"user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","_id":"27","issue":"1","abstract":[{"text":"The cerebral cortex is composed of a large variety of distinct cell-types including projection neurons, interneurons and glial cells which emerge from distinct neural stem cell (NSC) lineages. The vast majority of cortical projection neurons and certain classes of glial cells are generated by radial glial progenitor cells (RGPs) in a highly orchestrated manner. Recent studies employing single cell analysis and clonal lineage tracing suggest that NSC and RGP lineage progression are regulated in a profound deterministic manner. In this review we focus on recent advances based mainly on correlative phenotypic data emerging from functional genetic studies in mice. We establish hypotheses to test in future research and outline a conceptual framework how epigenetic cues modulate the generation of cell-type diversity during cortical development. This article is protected by copyright. All rights reserved.","lang":"eng"}],"type":"journal_article"},{"file":[{"success":1,"checksum":"e38523787b3bc84006f2793de99ad70f","date_updated":"2020-10-21T07:18:35Z","date_created":"2020-10-21T07:18:35Z","file_id":"8685","relation":"main_file","creator":"dernst","content_type":"application/pdf","file_size":71590590,"access_level":"open_access","file_name":"2018_NatureCellBio_Petridou_accepted.pdf"}],"oa_version":"Submitted Version","intvolume":" 21","status":"public","ddc":["570"],"title":"Fluidization-mediated tissue spreading by mitotic cell rounding and non-canonical Wnt signalling","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","_id":"5789","abstract":[{"text":"Tissue morphogenesis is driven by mechanical forces that elicit changes in cell size, shape and motion. The extent by which forces deform tissues critically depends on the rheological properties of the recipient tissue. Yet, whether and how dynamic changes in tissue rheology affect tissue morphogenesis and how they are regulated within the developing organism remain unclear. Here, we show that blastoderm spreading at the onset of zebrafish morphogenesis relies on a rapid, pronounced and spatially patterned tissue fluidization. Blastoderm fluidization is temporally controlled by mitotic cell rounding-dependent cell–cell contact disassembly during the last rounds of cell cleavages. Moreover, fluidization is spatially restricted to the central blastoderm by local activation of non-canonical Wnt signalling within the blastoderm margin, increasing cell cohesion and thereby counteracting the effect of mitotic rounding on contact disassembly. Overall, our results identify a fluidity transition mediated by loss of cell cohesion as a critical regulator of embryo morphogenesis.","lang":"eng"}],"type":"journal_article","date_published":"2019-02-01T00:00:00Z","page":"169–178","article_type":"original","citation":{"ama":"Petridou N, Grigolon S, Salbreux G, Hannezo EB, Heisenberg C-PJ. Fluidization-mediated tissue spreading by mitotic cell rounding and non-canonical Wnt signalling. Nature Cell Biology. 2019;21:169–178. doi:10.1038/s41556-018-0247-4","ieee":"N. Petridou, S. Grigolon, G. Salbreux, E. B. Hannezo, and C.-P. J. Heisenberg, “Fluidization-mediated tissue spreading by mitotic cell rounding and non-canonical Wnt signalling,” Nature Cell Biology, vol. 21. Nature Publishing Group, pp. 169–178, 2019.","apa":"Petridou, N., Grigolon, S., Salbreux, G., Hannezo, E. B., & Heisenberg, C.-P. J. (2019). Fluidization-mediated tissue spreading by mitotic cell rounding and non-canonical Wnt signalling. Nature Cell Biology. Nature Publishing Group. https://doi.org/10.1038/s41556-018-0247-4","ista":"Petridou N, Grigolon S, Salbreux G, Hannezo EB, Heisenberg C-PJ. 2019. Fluidization-mediated tissue spreading by mitotic cell rounding and non-canonical Wnt signalling. Nature Cell Biology. 21, 169–178.","short":"N. Petridou, S. Grigolon, G. Salbreux, E.B. Hannezo, C.-P.J. Heisenberg, Nature Cell Biology 21 (2019) 169–178.","mla":"Petridou, Nicoletta, et al. “Fluidization-Mediated Tissue Spreading by Mitotic Cell Rounding and Non-Canonical Wnt Signalling.” Nature Cell Biology, vol. 21, Nature Publishing Group, 2019, pp. 169–178, doi:10.1038/s41556-018-0247-4.","chicago":"Petridou, Nicoletta, Silvia Grigolon, Guillaume Salbreux, Edouard B Hannezo, and Carl-Philipp J Heisenberg. “Fluidization-Mediated Tissue Spreading by Mitotic Cell Rounding and Non-Canonical Wnt Signalling.” Nature Cell Biology. Nature Publishing Group, 2019. https://doi.org/10.1038/s41556-018-0247-4."},"publication":"Nature Cell Biology","has_accepted_license":"1","article_processing_charge":"No","day":"01","scopus_import":"1","volume":21,"date_updated":"2023-09-11T14:03:28Z","date_created":"2018-12-30T22:59:15Z","related_material":{"link":[{"relation":"press_release","description":"News on IST Homepage","url":"https://ist.ac.at/en/news/when-a-fish-becomes-fluid/"}]},"author":[{"full_name":"Petridou, Nicoletta","first_name":"Nicoletta","last_name":"Petridou","id":"2A003F6C-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-8451-1195"},{"full_name":"Grigolon, Silvia","first_name":"Silvia","last_name":"Grigolon"},{"last_name":"Salbreux","first_name":"Guillaume","full_name":"Salbreux, Guillaume"},{"id":"3A9DB764-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0001-6005-1561","first_name":"Edouard B","last_name":"Hannezo","full_name":"Hannezo, Edouard B"},{"full_name":"Heisenberg, Carl-Philipp J","first_name":"Carl-Philipp J","last_name":"Heisenberg","id":"39427864-F248-11E8-B48F-1D18A9856A87","orcid":"0000-0002-0912-4566"}],"department":[{"_id":"CaHe"},{"_id":"EdHa"}],"publisher":"Nature Publishing Group","publication_status":"published","pmid":1,"year":"2019","ec_funded":1,"file_date_updated":"2020-10-21T07:18:35Z","language":[{"iso":"eng"}],"acknowledged_ssus":[{"_id":"Bio"}],"doi":"10.1038/s41556-018-0247-4","project":[{"call_identifier":"H2020","name":"Interaction and feedback between cell mechanics and fate specification in vertebrate gastrulation","_id":"260F1432-B435-11E9-9278-68D0E5697425","grant_number":"742573"},{"name":"Molecular mechanism of auxindriven formative divisions delineating lateral root organogenesis in plants (EMBO fellowship)","_id":"253E54C8-B435-11E9-9278-68D0E5697425","grant_number":"ALTF710-2016"}],"isi":1,"quality_controlled":"1","external_id":{"pmid":["30559456"],"isi":["000457468300011"]},"oa":1,"publication_identifier":{"issn":["14657392"]},"month":"02"},{"month":"02","publication_identifier":{"eissn":["1091-6490"]},"doi":"10.1073/pnas.1812015116","language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1","url":"https://doi.org/10.1073/pnas.1812015116"}],"oa":1,"external_id":{"arxiv":["1806.10823"],"pmid":[" 30728300"],"isi":["000459074400013"]},"isi":1,"quality_controlled":"1","author":[{"full_name":"Lang, Moritz","id":"29E0800A-F248-11E8-B48F-1D18A9856A87","first_name":"Moritz","last_name":"Lang"},{"full_name":"Shkolnikov, Mikhail","orcid":"0000-0002-4310-178X","id":"35084A62-F248-11E8-B48F-1D18A9856A87","last_name":"Shkolnikov","first_name":"Mikhail"}],"related_material":{"link":[{"url":"https://ist.ac.at/en/news/famous-sandpile-model-shown-to-move-like-a-traveling-sand-dune/","relation":"press_release","description":"News on IST Webpage"}]},"date_updated":"2023-09-11T14:09:34Z","date_created":"2018-12-11T11:45:08Z","volume":116,"year":"2019","acknowledgement":"M.L. is grateful to the members of the C Guet and G Tkacik groups for valuable comments and support. M.S. is grateful to Nikita Kalinin for inspiring communications.\r\n","pmid":1,"publication_status":"published","publisher":"National Academy of Sciences","department":[{"_id":"CaGu"},{"_id":"GaTk"},{"_id":"TaHa"}],"day":"19","article_processing_charge":"No","scopus_import":"1","date_published":"2019-02-19T00:00:00Z","publication":"Proceedings of the National Academy of Sciences","citation":{"ama":"Lang M, Shkolnikov M. Harmonic dynamics of the Abelian sandpile. Proceedings of the National Academy of Sciences. 2019;116(8):2821-2830. doi:10.1073/pnas.1812015116","ista":"Lang M, Shkolnikov M. 2019. Harmonic dynamics of the Abelian sandpile. Proceedings of the National Academy of Sciences. 116(8), 2821–2830.","ieee":"M. Lang and M. Shkolnikov, “Harmonic dynamics of the Abelian sandpile,” Proceedings of the National Academy of Sciences, vol. 116, no. 8. National Academy of Sciences, pp. 2821–2830, 2019.","apa":"Lang, M., & Shkolnikov, M. (2019). Harmonic dynamics of the Abelian sandpile. Proceedings of the National Academy of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.1812015116","mla":"Lang, Moritz, and Mikhail Shkolnikov. “Harmonic Dynamics of the Abelian Sandpile.” Proceedings of the National Academy of Sciences, vol. 116, no. 8, National Academy of Sciences, 2019, pp. 2821–30, doi:10.1073/pnas.1812015116.","short":"M. Lang, M. Shkolnikov, Proceedings of the National Academy of Sciences 116 (2019) 2821–2830.","chicago":"Lang, Moritz, and Mikhail Shkolnikov. “Harmonic Dynamics of the Abelian Sandpile.” Proceedings of the National Academy of Sciences. National Academy of Sciences, 2019. https://doi.org/10.1073/pnas.1812015116."},"article_type":"original","page":"2821-2830","abstract":[{"text":"The abelian sandpile serves as a model to study self-organized criticality, a phenomenon occurring in biological, physical and social processes. The identity of the abelian group is a fractal composed of self-similar patches, and its limit is subject of extensive collaborative research. Here, we analyze the evolution of the sandpile identity under harmonic fields of different orders. We show that this evolution corresponds to periodic cycles through the abelian group characterized by the smooth transformation and apparent conservation of the patches constituting the identity. The dynamics induced by second and third order harmonics resemble smooth stretchings, respectively translations, of the identity, while the ones induced by fourth order harmonics resemble magnifications and rotations. Starting with order three, the dynamics pass through extended regions of seemingly random configurations which spontaneously reassemble into accentuated patterns. We show that the space of harmonic functions projects to the extended analogue of the sandpile group, thus providing a set of universal coordinates identifying configurations between different domains. Since the original sandpile group is a subgroup of the extended one, this directly implies that it admits a natural renormalization. Furthermore, we show that the harmonic fields can be induced by simple Markov processes, and that the corresponding stochastic dynamics show remarkable robustness over hundreds of periods. Finally, we encode information into seemingly random configurations, and decode this information with an algorithm requiring minimal prior knowledge. Our results suggest that harmonic fields might split the sandpile group into sub-sets showing different critical coefficients, and that it might be possible to extend the fractal structure of the identity beyond the boundaries of its domain. ","lang":"eng"}],"issue":"8","type":"journal_article","oa_version":"Published Version","_id":"196","user_id":"c635000d-4b10-11ee-a964-aac5a93f6ac1","status":"public","title":"Harmonic dynamics of the Abelian sandpile","intvolume":" 116"},{"author":[{"full_name":"Locatello, Francesco","last_name":"Locatello","first_name":"Francesco","orcid":"0000-0002-4850-0683","id":"26cfd52f-2483-11ee-8040-88983bcc06d4"},{"last_name":"Tschannen","first_name":"Michael","full_name":"Tschannen, Michael"},{"full_name":"Bauer, Stefan","first_name":"Stefan","last_name":"Bauer"},{"last_name":"Rätsch","first_name":"Gunnar","full_name":"Rätsch, Gunnar"},{"first_name":"Bernhard","last_name":"Schölkopf","full_name":"Schölkopf, Bernhard"},{"full_name":"Bachem, Olivier","first_name":"Olivier","last_name":"Bachem"}],"date_updated":"2023-09-12T07:01:34Z","date_created":"2023-08-22T14:06:37Z","oa_version":"Preprint","_id":"14184","year":"2019","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","status":"public","title":"Disentangling factors of variation using few labels","publication_status":"published","department":[{"_id":"FrLo"}],"abstract":[{"lang":"eng","text":"Learning disentangled representations is considered a cornerstone problem in\r\nrepresentation learning. Recently, Locatello et al. (2019) demonstrated that\r\nunsupervised disentanglement learning without inductive biases is theoretically\r\nimpossible and that existing inductive biases and unsupervised methods do not\r\nallow to consistently learn disentangled representations. However, in many\r\npractical settings, one might have access to a limited amount of supervision,\r\nfor example through manual labeling of (some) factors of variation in a few\r\ntraining examples. In this paper, we investigate the impact of such supervision\r\non state-of-the-art disentanglement methods and perform a large scale study,\r\ntraining over 52000 models under well-defined and reproducible experimental\r\nconditions. We observe that a small number of labeled examples (0.01--0.5\\% of\r\nthe data set), with potentially imprecise and incomplete labels, is sufficient\r\nto perform model selection on state-of-the-art unsupervised models. Further, we\r\ninvestigate the benefit of incorporating supervision into the training process.\r\nOverall, we empirically validate that with little and imprecise supervision it\r\nis possible to reliably learn disentangled representations."}],"extern":"1","type":"conference","conference":{"name":"ICLR: International Conference on Learning Representations","end_date":"2020-05-01","location":"Virtual","start_date":"2020-04-26"},"date_published":"2019-12-20T00:00:00Z","language":[{"iso":"eng"}],"publication":"8th International Conference on Learning Representations","main_file_link":[{"open_access":"1","url":"https://arxiv.org/abs/1905.01258"}],"oa":1,"citation":{"chicago":"Locatello, Francesco, Michael Tschannen, Stefan Bauer, Gunnar Rätsch, Bernhard Schölkopf, and Olivier Bachem. “Disentangling Factors of Variation Using Few Labels.” In 8th International Conference on Learning Representations, 2019.","mla":"Locatello, Francesco, et al. “Disentangling Factors of Variation Using Few Labels.” 8th International Conference on Learning Representations, 2019.","short":"F. Locatello, M. Tschannen, S. Bauer, G. Rätsch, B. Schölkopf, O. Bachem, in:, 8th International Conference on Learning Representations, 2019.","ista":"Locatello F, Tschannen M, Bauer S, Rätsch G, Schölkopf B, Bachem O. 2019. Disentangling factors of variation using few labels. 8th International Conference on Learning Representations. ICLR: International Conference on Learning Representations.","apa":"Locatello, F., Tschannen, M., Bauer, S., Rätsch, G., Schölkopf, B., & Bachem, O. (2019). Disentangling factors of variation using few labels. In 8th International Conference on Learning Representations. Virtual.","ieee":"F. Locatello, M. Tschannen, S. Bauer, G. Rätsch, B. Schölkopf, and O. Bachem, “Disentangling factors of variation using few labels,” in 8th International Conference on Learning Representations, Virtual, 2019.","ama":"Locatello F, Tschannen M, Bauer S, Rätsch G, Schölkopf B, Bachem O. Disentangling factors of variation using few labels. In: 8th International Conference on Learning Representations. ; 2019."},"external_id":{"arxiv":["1905.01258"]},"quality_controlled":"1","day":"20","month":"12","article_processing_charge":"No","scopus_import":"1"},{"year":"2019","publication_status":"published","publisher":"ML Research Press","department":[{"_id":"FrLo"}],"author":[{"full_name":"Gresele, Luigi","last_name":"Gresele","first_name":"Luigi"},{"full_name":"Rubenstein, Paul K.","first_name":"Paul K.","last_name":"Rubenstein"},{"full_name":"Mehrjou, Arash","first_name":"Arash","last_name":"Mehrjou"},{"last_name":"Locatello","first_name":"Francesco","orcid":"0000-0002-4850-0683","id":"26cfd52f-2483-11ee-8040-88983bcc06d4","full_name":"Locatello, Francesco"},{"full_name":"Schölkopf, Bernhard","first_name":"Bernhard","last_name":"Schölkopf"}],"date_updated":"2023-09-12T08:07:38Z","date_created":"2023-08-22T14:08:35Z","volume":115,"extern":"1","main_file_link":[{"url":"https://arxiv.org/abs/1905.06642","open_access":"1"}],"oa":1,"external_id":{"arxiv":["1905.06642"]},"quality_controlled":"1","conference":{"end_date":"2019-07-25","start_date":"2019-07-22","location":"Tel Aviv, Israel","name":"UAI: Uncertainty in Artificial Intelligence"},"language":[{"iso":"eng"}],"month":"05","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"14189","title":"The incomplete Rosetta Stone problem: Identifiability results for multi-view nonlinear ICA","status":"public","intvolume":" 115","oa_version":"Preprint","type":"conference","alternative_title":["PMLR"],"abstract":[{"lang":"eng","text":"We consider the problem of recovering a common latent source with independent\r\ncomponents from multiple views. This applies to settings in which a variable is\r\nmeasured with multiple experimental modalities, and where the goal is to\r\nsynthesize the disparate measurements into a single unified representation. We\r\nconsider the case that the observed views are a nonlinear mixing of\r\ncomponent-wise corruptions of the sources. When the views are considered\r\nseparately, this reduces to nonlinear Independent Component Analysis (ICA) for\r\nwhich it is provably impossible to undo the mixing. We present novel\r\nidentifiability proofs that this is possible when the multiple views are\r\nconsidered jointly, showing that the mixing can theoretically be undone using\r\nfunction approximators such as deep neural networks. In contrast to known\r\nidentifiability results for nonlinear ICA, we prove that independent latent\r\nsources with arbitrary mixing can be recovered as long as multiple,\r\nsufficiently different noisy views are available."}],"publication":"Proceedings of the 35th Conference on Uncertainty in Artificial Intelligence","citation":{"chicago":"Gresele, Luigi, Paul K. Rubenstein, Arash Mehrjou, Francesco Locatello, and Bernhard Schölkopf. “The Incomplete Rosetta Stone Problem: Identifiability Results for Multi-View Nonlinear ICA.” In Proceedings of the 35th Conference on Uncertainty in Artificial Intelligence, 115:217–27. ML Research Press, 2019.","mla":"Gresele, Luigi, et al. “The Incomplete Rosetta Stone Problem: Identifiability Results for Multi-View Nonlinear ICA.” Proceedings of the 35th Conference on Uncertainty in Artificial Intelligence, vol. 115, ML Research Press, 2019, pp. 217–27.","short":"L. Gresele, P.K. Rubenstein, A. Mehrjou, F. Locatello, B. Schölkopf, in:, Proceedings of the 35th Conference on Uncertainty in Artificial Intelligence, ML Research Press, 2019, pp. 217–227.","ista":"Gresele L, Rubenstein PK, Mehrjou A, Locatello F, Schölkopf B. 2019. The incomplete Rosetta Stone problem: Identifiability results for multi-view nonlinear ICA. Proceedings of the 35th Conference on Uncertainty in Artificial Intelligence. UAI: Uncertainty in Artificial Intelligence, PMLR, vol. 115, 217–227.","apa":"Gresele, L., Rubenstein, P. K., Mehrjou, A., Locatello, F., & Schölkopf, B. (2019). The incomplete Rosetta Stone problem: Identifiability results for multi-view nonlinear ICA. In Proceedings of the 35th Conference on Uncertainty in Artificial Intelligence (Vol. 115, pp. 217–227). Tel Aviv, Israel: ML Research Press.","ieee":"L. Gresele, P. K. Rubenstein, A. Mehrjou, F. Locatello, and B. Schölkopf, “The incomplete Rosetta Stone problem: Identifiability results for multi-view nonlinear ICA,” in Proceedings of the 35th Conference on Uncertainty in Artificial Intelligence, Tel Aviv, Israel, 2019, vol. 115, pp. 217–227.","ama":"Gresele L, Rubenstein PK, Mehrjou A, Locatello F, Schölkopf B. The incomplete Rosetta Stone problem: Identifiability results for multi-view nonlinear ICA. In: Proceedings of the 35th Conference on Uncertainty in Artificial Intelligence. Vol 115. ML Research Press; 2019:217-227."},"page":"217-227","date_published":"2019-05-16T00:00:00Z","scopus_import":"1","day":"16","article_processing_charge":"No"},{"extern":"1","volume":32,"date_updated":"2023-09-12T09:37:22Z","date_created":"2023-08-22T14:12:28Z","author":[{"orcid":"0000-0002-4850-0683","id":"26cfd52f-2483-11ee-8040-88983bcc06d4","last_name":"Locatello","first_name":"Francesco","full_name":"Locatello, Francesco"},{"full_name":"Abbati, Gabriele","first_name":"Gabriele","last_name":"Abbati"},{"full_name":"Rainforth, Tom","first_name":"Tom","last_name":"Rainforth"},{"full_name":"Bauer, Stefan","first_name":"Stefan","last_name":"Bauer"},{"full_name":"Schölkopf, Bernhard","last_name":"Schölkopf","first_name":"Bernhard"},{"full_name":"Bachem, Olivier","last_name":"Bachem","first_name":"Olivier"}],"department":[{"_id":"FrLo"}],"publication_status":"published","year":"2019","publication_identifier":{"isbn":["9781713807933"]},"month":"12","language":[{"iso":"eng"}],"conference":{"end_date":"2019-12-14","start_date":"2019-12-08","location":"Vancouver, Canada","name":"NeurIPS: Neural Information Processing Systems"},"quality_controlled":"1","oa":1,"main_file_link":[{"url":"https://arxiv.org/abs/1905.13662","open_access":"1"}],"external_id":{"arxiv":["1905.13662"]},"abstract":[{"lang":"eng","text":"Recently there has been a significant interest in learning disentangled\r\nrepresentations, as they promise increased interpretability, generalization to\r\nunseen scenarios and faster learning on downstream tasks. In this paper, we\r\ninvestigate the usefulness of different notions of disentanglement for\r\nimproving the fairness of downstream prediction tasks based on representations.\r\nWe consider the setting where the goal is to predict a target variable based on\r\nthe learned representation of high-dimensional observations (such as images)\r\nthat depend on both the target variable and an \\emph{unobserved} sensitive\r\nvariable. We show that in this setting both the optimal and empirical\r\npredictions can be unfair, even if the target variable and the sensitive\r\nvariable are independent. Analyzing the representations of more than\r\n\\num{12600} trained state-of-the-art disentangled models, we observe that\r\nseveral disentanglement scores are consistently correlated with increased\r\nfairness, suggesting that disentanglement may be a useful property to encourage\r\nfairness when sensitive variables are not observed."}],"type":"conference","oa_version":"Preprint","intvolume":" 32","title":"On the fairness of disentangled representations","status":"public","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"14197","article_processing_charge":"No","day":"08","scopus_import":"1","date_published":"2019-12-08T00:00:00Z","page":"14611–14624","citation":{"ista":"Locatello F, Abbati G, Rainforth T, Bauer S, Schölkopf B, Bachem O. 2019. On the fairness of disentangled representations. Advances in Neural Information Processing Systems. NeurIPS: Neural Information Processing Systems vol. 32, 14611–14624.","ieee":"F. Locatello, G. Abbati, T. Rainforth, S. Bauer, B. Schölkopf, and O. Bachem, “On the fairness of disentangled representations,” in Advances in Neural Information Processing Systems, Vancouver, Canada, 2019, vol. 32, pp. 14611–14624.","apa":"Locatello, F., Abbati, G., Rainforth, T., Bauer, S., Schölkopf, B., & Bachem, O. (2019). On the fairness of disentangled representations. In Advances in Neural Information Processing Systems (Vol. 32, pp. 14611–14624). Vancouver, Canada.","ama":"Locatello F, Abbati G, Rainforth T, Bauer S, Schölkopf B, Bachem O. On the fairness of disentangled representations. In: Advances in Neural Information Processing Systems. Vol 32. ; 2019:14611–14624.","chicago":"Locatello, Francesco, Gabriele Abbati, Tom Rainforth, Stefan Bauer, Bernhard Schölkopf, and Olivier Bachem. “On the Fairness of Disentangled Representations.” In Advances in Neural Information Processing Systems, 32:14611–14624, 2019.","mla":"Locatello, Francesco, et al. “On the Fairness of Disentangled Representations.” Advances in Neural Information Processing Systems, vol. 32, 2019, pp. 14611–14624.","short":"F. Locatello, G. Abbati, T. Rainforth, S. Bauer, B. Schölkopf, O. Bachem, in:, Advances in Neural Information Processing Systems, 2019, pp. 14611–14624."},"publication":"Advances in Neural Information Processing Systems"},{"date_created":"2023-08-22T14:09:35Z","date_updated":"2023-09-12T08:48:45Z","volume":32,"author":[{"full_name":"Locatello, Francesco","orcid":"0000-0002-4850-0683","id":"26cfd52f-2483-11ee-8040-88983bcc06d4","last_name":"Locatello","first_name":"Francesco"},{"full_name":"Yurtsever, Alp","last_name":"Yurtsever","first_name":"Alp"},{"full_name":"Fercoq, Olivier","first_name":"Olivier","last_name":"Fercoq"},{"full_name":"Cevher, Volkan","last_name":"Cevher","first_name":"Volkan"}],"publication_status":"published","department":[{"_id":"FrLo"}],"year":"2019","extern":"1","language":[{"iso":"eng"}],"conference":{"location":"Vancouver, Canada","start_date":"2019-12-08","end_date":"2019-12-14","name":"NeurIPS: Neural Information Processing Systems"},"quality_controlled":"1","oa":1,"external_id":{"arxiv":["1901.10348"]},"main_file_link":[{"url":"https://arxiv.org/abs/1901.10348","open_access":"1"}],"month":"12","publication_identifier":{"isbn":["9781713807933"]},"oa_version":"Preprint","title":"Stochastic Frank-Wolfe for composite convex minimization","status":"public","intvolume":" 32","user_id":"2DF688A6-F248-11E8-B48F-1D18A9856A87","_id":"14191","abstract":[{"lang":"eng","text":"A broad class of convex optimization problems can be formulated as a semidefinite program (SDP), minimization of a convex function over the positive-semidefinite cone subject to some affine constraints. The majority of classical SDP solvers are designed for the deterministic setting where problem data is readily available. In this setting, generalized conditional gradient methods (aka Frank-Wolfe-type methods) provide scalable solutions by leveraging the so-called linear minimization oracle instead of the projection onto the semidefinite cone. Most problems in machine learning and modern engineering applications, however, contain some degree of stochasticity. In this work, we propose the first conditional-gradient-type method for solving stochastic optimization problems under affine constraints. Our method guarantees O(k−1/3) convergence rate in expectation on the objective residual and O(k−5/12) on the feasibility gap."}],"type":"conference","date_published":"2019-12-29T00:00:00Z","page":"14291–14301","publication":"Advances in Neural Information Processing Systems","citation":{"ama":"Locatello F, Yurtsever A, Fercoq O, Cevher V. Stochastic Frank-Wolfe for composite convex minimization. In: Advances in Neural Information Processing Systems. Vol 32. ; 2019:14291–14301.","apa":"Locatello, F., Yurtsever, A., Fercoq, O., & Cevher, V. (2019). Stochastic Frank-Wolfe for composite convex minimization. In Advances in Neural Information Processing Systems (Vol. 32, pp. 14291–14301). Vancouver, Canada.","ieee":"F. Locatello, A. Yurtsever, O. Fercoq, and V. Cevher, “Stochastic Frank-Wolfe for composite convex minimization,” in Advances in Neural Information Processing Systems, Vancouver, Canada, 2019, vol. 32, pp. 14291–14301.","ista":"Locatello F, Yurtsever A, Fercoq O, Cevher V. 2019. Stochastic Frank-Wolfe for composite convex minimization. Advances in Neural Information Processing Systems. NeurIPS: Neural Information Processing Systems vol. 32, 14291–14301.","short":"F. Locatello, A. Yurtsever, O. Fercoq, V. Cevher, in:, Advances in Neural Information Processing Systems, 2019, pp. 14291–14301.","mla":"Locatello, Francesco, et al. “Stochastic Frank-Wolfe for Composite Convex Minimization.” Advances in Neural Information Processing Systems, vol. 32, 2019, pp. 14291–14301.","chicago":"Locatello, Francesco, Alp Yurtsever, Olivier Fercoq, and Volkan Cevher. “Stochastic Frank-Wolfe for Composite Convex Minimization.” In Advances in Neural Information Processing Systems, 32:14291–14301, 2019."},"day":"29","article_processing_charge":"No","scopus_import":"1"}]