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Laurence Mauro</em></li>\r\n\t<li>How to create impactful and effective posters - <em>Eva Schier &amp; Laurence Mauro</em></li>\r\n</ul>\r\n<strong>13:30 - 17:15 - Workshop </strong>(limited to 30 participants)\r\n\r\n<ul>\r\n\t<li>Image Ethics &amp;  Quarep’s checklist - <em>Arne Seitz</em></li>\r\n\t<li>Make use of OMERO to augment your figure with interactive content - <em>Rémy Dornier</em></li>\r\n\t<li>How to create 3D rendered data, make videos and publish them on mediaspace - <em>Romain Guiet</em></li>\r\n\t<li>Make use of story telling to make your talk more engaging - <em>Anjalie Schlaeppi</em></li>\r\n</ul>\r\n<br>\r\nCome and learn to make the best of your data!<br>\r\n<br>\r\n<a href=\"https://forms.gle/6LkaftTrDQpFdchY9\">Free - registration mandatory</a> <em>You can register for the seminar only, the afternoon workshops only, or the full program.</em>","image_description":"","creation_date":"2026-05-06T15:36:11","last_modification_date":"2026-05-12T17:06:56","link_label":"Registration","link_url":"https://forms.gle/6LkaftTrDQpFdchY9","canceled":"False","cancel_reason":"","place_and_room":"AI 1153","url_place_and_room":"https://plan.epfl.ch/?room==AI%201153","url_online_room":"","spoken_languages":["https://memento.epfl.ch/api/v1/spoken_languages/2/?format=json"],"speaker":"BIOP &amp; 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To mark the occasion, the Archives de la Construction Moderne and Archizoom invite you to take a tour that begins with the ACM's original document storage facilities and ends with their display at Archizoom with the exhibition <em>Des Cèdres à Dorigny, bâtir l'école d'architecture</em>.<br>\r\n<br>\r\n<strong>About the exhibition </strong><br>\r\n<br>\r\nFocusing on architectural projects, both built and unrealised, kept in the archives of modern construction, the exhibition <em>Des Cèdres à Dorigny</em> tells the story of the birth and evolution of the Lausanne School of Architecture. From its beginnings within the EPUL to its integration into the EPFL campus, this historical journey puts into perspective the conditions of architectural education, its relationship with engineering, and the role of archives in building an institutional memory that sheds light on both the discipline of architecture and its teaching.<br>\r\n<br>\r\n<em>Guided tours are available upon <a href=\"https://forms.gle/22MoeLq9n3JDQTb56\">registration</a></em><br>\r\n<em>Guided tours can be organized upon request for groups and schools</em>","image_description":"","creation_date":"2026-02-18T10:55:58","last_modification_date":"2026-02-18T10:59:47","link_label":"Des Cèdres à Dorigny, bâtir l'école d'architecture","link_url":"https://www.epfl.ch/campus/art-culture/museum-exhibitions/archizoom/fr/des-cedres-a-dorigny-batir-lecole-darchitecture/","canceled":"False","cancel_reason":"","place_and_room":"Archizoom","url_place_and_room":"https://plan.epfl.ch/?room==SG%201212","url_online_room":"","spoken_languages":["https://memento.epfl.ch/api/v1/spoken_languages/1/?format=json"],"speaker":"Barbara Galimberti, Kethsana Muong","organizer":"Archizoom ACM","contact":"Solène Hoffmann","is_internal":"False","theme":"","vulgarization":{"id":1,"fr_label":"Tout public","en_label":"General public"},"registration":{"id":3,"fr_label":"Entrée libre","en_label":"Free"},"keywords":"Journée internationale des archives, architecture, archives, histoire, construction, exposition","file":null,"icalendar_url":"https://memento.epfl.ch/event/export/119774/","category":{"id":9,"code":"MANIF","fr_label":"Événements festifs et culturels","en_label":"Cultural events","activated":true},"academic_calendar_category":null,"domains":[],"mementos":["https://memento.epfl.ch/api/v1/mementos/1/?format=json","https://memento.epfl.ch/api/v1/mementos/4/?format=json","https://memento.epfl.ch/api/v1/mementos/6/?format=json","https://memento.epfl.ch/api/v1/mementos/22/?format=json","https://memento.epfl.ch/api/v1/mementos/32/?format=json","https://memento.epfl.ch/api/v1/mementos/45/?format=json","https://memento.epfl.ch/api/v1/mementos/145/?format=json","https://memento.epfl.ch/api/v1/mementos/421/?format=json"]},{"id":71903,"title":"Computer-aided proofs in first-order optimization, with applications to error feedback","slug":"computer-aided-proofs-in-first-order-optimization","event_url":"https://memento.epfl.ch/event/computer-aided-proofs-in-first-order-optimization","visual_url":"https://memento.epfl.ch/image/33221/200x112.jpg","visual_large_url":"https://memento.epfl.ch/image/33221/720x405.jpg","visual_maxsize_url":"https://memento.epfl.ch/image/33221/max-size.jpg","lang":"en","start_date":"2026-05-29","end_date":"2026-05-29","start_time":"15:15:00","end_time":"16:15:00","description":"<p>First-order methods are widely used in optimization and machine learning, and their behavior is often analyzed through the spectrum of worst case convergence rates. Obtaining such guarantees is often difficult and both time consuming and error-prone. Starting with the work of Drori and Teboulle (2014), novel techniques have been used to gain numerical insights, leading to the release of various performance estimation (PE) software. <br>\r\n<br>\r\nIn this talk, I will show how various computer-aided techniques can be used to study first-order optimization methods in a systematic way. From performance estimation problems with automated Lyapunov discovery, to symbolic regression and computer algebra systems, novel tools completely reshape the way we approach theory of optimization. <br>\r\nAs a main example, I will focus on error feedback methods used with compressed communication in distributed optimization. While error feedback has been widely studied, existing theory often provides untight (thus unreliable)  bounds. I will present tight analyses with matching lower bounds that allow a fair comparison between error feedback schemes and standard compressed gradient descent, and help explain when error feedback is useful and when it is not.<br>\r\n<br>\r\nOverall, the talk aims to show how various computer-aided proofs can lead to clearer and more reliable insights into first-order optimization methods.<br>\r\n<br>\r\nBased on :<br>\r\n<a href=\"https://icml.cc/virtual/2026/poster/62713\" target=\"_blank\">A Tight Theory of Error Feedback Algorithms in Distributed Optimization,</a> DB Thomsen, A Taylor, A Dieuleveut<br>\r\nInternational Conference on Machine Learning (ICML 2026)<br>\r\n<a href=\"https://scholar.google.com/citations?view_op=view_citation&amp;hl=fr&amp;user=ge-OinUAAAAJ&amp;sortby=pubdate&amp;citation_for_view=ge-OinUAAAAJ:q3oQSFYPqjQC\" target=\"_blank\">Tight analyses of first-order methods with error feedback</a>, DB Thomsen, A Taylor, A Dieuleveut<br>\r\nAdvances in Neural Information Processing Systems (NeurIPS) (2025).<br>\r\n<a href=\"https://scholar.google.com/citations?view_op=view_citation&amp;hl=fr&amp;user=ge-OinUAAAAJ&amp;sortby=pubdate&amp;citation_for_view=ge-OinUAAAAJ:L8Ckcad2t8MC\" target=\"_blank\">PEPit: computer-assisted worst-case analyses of first-order optimization methods in Python</a><br>\r\nB Goujaud, C Moucer, F Glineur, JM Hendrickx, AB Taylor, A Dieuleveut<br>\r\nMathematical Programming Computation 16 (3), 337-367  (2024)<br>\r\n(eventually - as a detour) <a href=\"https://scholar.google.com/citations?view_op=view_citation&amp;hl=fr&amp;user=ge-OinUAAAAJ&amp;sortby=pubdate&amp;citation_for_view=ge-OinUAAAAJ:wbdj-CoPYUoC\" target=\"_blank\">Provable non-accelerations of the heavy-ball method</a> B Goujaud, A Taylor, A Dieuleveut, Mathematical Programming, 1-59  (2025)<br>\r\n </p>","image_description":"","creation_date":"2026-05-19T09:20:45","last_modification_date":"2026-05-19T09:22:37","link_label":"","link_url":"https://www.epfl.ch/schools/sb/research/math/research/statistics/","canceled":"False","cancel_reason":"","place_and_room":"CM 1 517","url_place_and_room":"https://plan.epfl.ch/?room==CM%201%20517","url_online_room":"","spoken_languages":["https://memento.epfl.ch/api/v1/spoken_languages/2/?format=json"],"speaker":"Aymeric Dieuleveut, Ecole Polytechnique, Institut Polytechnique de Paris","organizer":"Myrto Limnios    ","contact":"Maroussia Schaffner","is_internal":"False","theme":"","vulgarization":{"id":2,"fr_label":"Public averti","en_label":"Informed public"},"registration":{"id":3,"fr_label":"Entrée libre","en_label":"Free"},"keywords":"","file":null,"icalendar_url":"https://memento.epfl.ch/event/export/120800/","category":{"id":1,"code":"CONF","fr_label":"Conférences - Séminaires","en_label":"Conferences - Seminars","activated":true},"academic_calendar_category":null,"domains":[],"mementos":["https://memento.epfl.ch/api/v1/mementos/5/?format=json","https://memento.epfl.ch/api/v1/mementos/7/?format=json","https://memento.epfl.ch/api/v1/mementos/288/?format=json"]}]}