{ "129230-21862354": { "datetime_modified":"20241118T130932", "datetime_start":"20241122T100000", "datetime_end":"20241122T112000", "has_end_time":1, "date_start":"2024-11-22", "date_end":"2024-11-22", "time_start":"10:00:00", "time_end":"11:20:00", "time_zone":"America\/Detroit", "event_title":"Stable matching as transportation", "occurrence_title":"", "combined_title":"Stable matching as transportation: Joseph Root, University of Chicago", "event_subtitle":"Joseph Root, University of Chicago", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"We study matching markets with aligned preferences and establish a connection between common design objectives -- stability, efficiency, and fairness -- and the theory of optimal transport. Optimal transport gives new insights into the structural properties of matchings obtained from pursuing these objectives, and into the trade-offs between different objectives. Matching markets with aligned preferences provide a tractable stylized model capturing supply-demand imbalances in a range of settings such as partnership formation, school choice, organ donor exchange, and markets with transferable utility where bargaining over transfers happens after a match is formed.", "occurrence_notes":null, "guid":"129230-21862354@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/129230", "building_id":"1000154", "building_name":"Lorch Hall", "campus_maps_id":"88", "room":"275D (in the MITRE Suite)", "location_name":"Lorch Hall", "has_livestream":0, "cost":"", "tags":["Economics","Microeconomics","seminar","Theory"], "website":"http:\/\/www.lsa.umich.edu\/econ", "sponsors":[ { "group_name":"Department of Economics", "group_id":"3302", "website":"http:\/\/www.lsa.umich.edu\/econ" }, { "group_name":"Economic Theory", "group_id":"3555", "website":"" }, { "group_name":"Department of Economics Seminars", "group_id":"3566", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2024\/11\/event_129230_original-1.png", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_thumb\/media\/attachments\/2024\/11\/event_129230_original-1.png", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2024\/11\/event_129230_original-1.png", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2024\/11\/event_129230_original-1.png", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2024\/11\/event_129230_original-1.png", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb\/media\/attachments\/2024\/11\/event_129230_original-1.png", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb_square\/media\/attachments\/2024\/11\/event_129230_original-1.png", "group_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large\/media\/attachments\/2024\/11\/event_129230_original-1.png", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large_lightbox\/media\/attachments\/2024\/11\/event_129230_original-1.png", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_crop\/media\/attachments\/2024\/11\/event_129230_original-1.png", "event_list":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_list\/media\/attachments\/2024\/11\/event_129230_original-1.png", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2024\/11\/event_129230_original-1.png", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2024\/11\/event_129230_original-1.png", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_grid_2x\/media\/attachments\/2024\/11\/event_129230_original-1.png", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_large\/media\/attachments\/2024\/11\/event_129230_original-1.png", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_thumb\/media\/attachments\/2024\/11\/event_129230_original-1.png" }, "occurrence_count":1, "first_occurrence":21862354 } , "124596-21853249": { "datetime_modified":"20241114T135918", "datetime_start":"20241122T100000", "datetime_end":"20241122T110000", "has_end_time":1, "date_start":"2024-11-22", "date_end":"2024-11-22", "time_start":"10:00:00", "time_end":"11:00:00", "time_zone":"America\/Detroit", "event_title":"Statistics Department Seminar Series: Tianyu Zhang, Postdoctoral Research Fellow, Department of Statistics & Data Science, Carnegie Mellon University.", "occurrence_title":"", "combined_title":"Statistics Department Seminar Series: Tianyu Zhang, Postdoctoral Research Fellow, Department of Statistics & Data Science, Carnegie Mellon University.: \"Adaptive and Scalable Nonparametric Estimation via Stochastic Optimization\"", "event_subtitle":"\"Adaptive and Scalable Nonparametric Estimation via Stochastic Optimization\"", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Abstract: Nonparametric procedures are frequently employed in predictive and inferential modeling to relate random variables without imposing specific parametric forms. In supervised learning, for instance, our focus is often on the conditional mean function that links predictive covariates to a numerical outcome of interest. While many existing statistical learning methods achieve this with optimal statistical performance, their computational expenses often do not scale favorably with increasing sample sizes. This challenge is exacerbated in certain \u201conline settings,\u201d where data is continuously collected and estimates require frequent updates.\r\n\r\nIn this talk, I will discuss a class of nonparametric stochastic optimization methods. The estimates are constructed using stochastic gradient descent (SGD) over a function space of varying capacity. Combining this computational approach with compact function approximation strategies\u2014such as utilizing eigenfunctions in a reproducing kernel Hilbert space\u2014certain nonparametric estimators can attain both optimal statistical properties and minimal (computational) space expense. Additionally, I will introduce a rolling validation procedure, an online adaptation of cross-validation, designed for hyperparameter tuning. This model selection process naturally integrates with incremental SGD algorithms, imposing a negligible extra computational burden.\r\n\r\nhttps:\/\/terrytianyuzhang.github.io\/", "occurrence_notes":null, "guid":"124596-21853249@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/124596", "building_id":"1000167", "building_name":"West Hall", "campus_maps_id":"163", "room":"340", "location_name":"West Hall", "has_livestream":0, "cost":"", "tags":["seminar"], "website":"https:\/\/lsa.umich.edu\/stats", "sponsors":[ { "group_name":"Department of Statistics", "group_id":"3473", "website":"" }, { "group_name":"Department of Statistics Seminar Series", "group_id":"3585", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2024\/11\/event_124596_original-1.jpeg", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_thumb\/media\/attachments\/2024\/11\/event_124596_original-1.jpeg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2024\/11\/event_124596_original-1.jpeg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2024\/11\/event_124596_original-1.jpeg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2024\/11\/event_124596_original-1.jpeg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb\/media\/attachments\/2024\/11\/event_124596_original-1.jpeg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb_square\/media\/attachments\/2024\/11\/event_124596_original-1.jpeg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large\/media\/attachments\/2024\/11\/event_124596_original-1.jpeg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large_lightbox\/media\/attachments\/2024\/11\/event_124596_original-1.jpeg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_crop\/media\/attachments\/2024\/11\/event_124596_original-1.jpeg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_list\/media\/attachments\/2024\/11\/event_124596_original-1.jpeg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2024\/11\/event_124596_original-1.jpeg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2024\/11\/event_124596_original-1.jpeg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_grid_2x\/media\/attachments\/2024\/11\/event_124596_original-1.jpeg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_large\/media\/attachments\/2024\/11\/event_124596_original-1.jpeg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2024\/11\/event_124596_original-1.jpeg" }, "occurrence_count":1, "first_occurrence":21853249 } }