{ "124267-21852822": { "datetime_modified":"20240822T095452", "datetime_start":"20240906T100000", "datetime_end":"20240906T113000", "has_end_time":1, "date_start":"2024-09-06", "date_end":"2024-09-06", "time_start":"10:00:00", "time_end":"11:30:00", "time_zone":"America\/Detroit", "event_title":"Sources of Market Power in Web Search: Evidence from a Field Experiment", "occurrence_title":"", "combined_title":"Sources of Market Power in Web Search: Evidence from a Field Experiment: Leon Musolff, The Wharton School of the University of Pennsylvania", "event_subtitle":"Leon Musolff, The Wharton School of the University of Pennsylvania", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"We evaluate the economic forces that contribute to Google\u2019s large market share in web search. We develop a model of search demand in which consumer choices are influenced by switching costs, quality beliefs, and inattention, and estimate it using data from a field experiment with US desktop internet users. We find that (i) requiring Google users to make an active choice among search engines does not change market shares, implying that switching costs play a limited role; (ii) Google users who are paid to try Bing for two weeks update positively about its relative quality, with a significant share preferring to continue using it; (iii) switching defaults increases Bing market share by more than correcting quality beliefs, consistent with persistent inattention. Correcting beliefs and removing choice frictions would increase Bing\u2019s market share and increase consumer surplus. Policies that affect defaults are more effective than those requiring active choice. In the final part of the paper, we use Microsoft search logs to assess the impact of additional data on search result relevance. The results suggest that sharing Google\u2019s click-and-query data with Microsoft may have a limited effect on market shares.", "occurrence_notes":null, "guid":"124267-21852822@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/124267", "building_id":"1000154", "building_name":"Lorch Hall", "campus_maps_id":"88", "room":"301", "location_name":"Lorch Hall", "has_livestream":0, "cost":"", "tags":["Economics","Industrial Organization","seminar","Microeconomics"], "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":"Applied Microeconomics\/Industrial Organization", "group_id":"3545", "website":"" }, { "group_name":"Department of Economics Seminars", "group_id":"3566", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2024\/08\/event_124267_original-2.jpeg", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2024\/08\/event_124267_original-2.jpeg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2024\/08\/event_124267_original-2.jpeg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2024\/08\/event_124267_original-2.jpeg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2024\/08\/event_124267_original-2.jpeg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2024\/08\/event_124267_original-2.jpeg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2024\/08\/event_124267_original-2.jpeg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2024\/08\/event_124267_original-2.jpeg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2024\/08\/event_124267_original-2.jpeg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2024\/08\/event_124267_original-2.jpeg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2024\/08\/event_124267_original-2.jpeg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2024\/08\/event_124267_original-2.jpeg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2024\/08\/event_124267_original-2.jpeg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2024\/08\/event_124267_original-2.jpeg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2024\/08\/event_124267_original-2.jpeg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2024\/08\/event_124267_original-2.jpeg" }, "occurrence_count":1, "first_occurrence":21852822 } , "124531-21853147": { "datetime_modified":"20240827T120909", "datetime_start":"20240906T100000", "datetime_end":"20240906T110000", "has_end_time":1, "date_start":"2024-09-06", "date_end":"2024-09-06", "time_start":"10:00:00", "time_end":"11:00:00", "time_zone":"America\/Detroit", "event_title":"Statistics Department Seminar Series: Yang Chen, Assistant Professor, Department of Statistics, University of Michigan", "occurrence_title":"", "combined_title":"Statistics Department Seminar Series: Yang Chen, Assistant Professor, Department of Statistics, University of Michigan: \"Video Imputation and Prediction Methods with Applications in Space Weather\"", "event_subtitle":"\"Video Imputation and Prediction Methods with Applications in Space Weather\"", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Abstract: The total electron content (TEC) maps can be used to estimate the signal delay of GPS due to the ionospheric electron content between a receiver and a satellite. This delay can result in a GPS positioning error. Thus, it is important to monitor and forecast the TEC maps. However, the observed TEC maps have big patches of missingness in the ocean and scattered small areas on the land. Thus, precise imputation and prediction of the TEC maps are crucial in space weather forecasting. \r\n\r\nIn this talk, I first present several extensions of existing matrix completion algorithms to achieve TEC map reconstruction, accounting for spatial smoothness and temporal consistency while preserving essential structures of the TEC maps. We show that our proposed method achieves better reconstructed TEC maps as compared to existing methods in the literature. I will also briefly describe the use of our large-scale complete TEC database. Then, I present a new model for forecasting time series data distributed on a matrix-shaped spatial grid, using the historical spatiotemporal data and auxiliary vector-valued time series data. Large sample asymptotics of the estimators for both finite and high dimensional settings are established, and performances of the model are validated with extensive simulation studies and an application to forecast the global TEC distributions.\r\n\r\nhttps:\/\/yangchenfunstatistics.github.io\/yangchen.github.io\/", "occurrence_notes":null, "guid":"124531-21853147@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/124531", "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\/08\/event_124531_original-1.jpeg", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2024\/08\/crop-event_124531_original-1.jpeg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2024\/08\/crop-event_124531_original-1.jpeg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2024\/08\/crop-event_124531_original-1.jpeg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2024\/08\/crop-event_124531_original-1.jpeg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2024\/08\/crop-event_124531_original-1.jpeg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2024\/08\/crop-event_124531_original-1.jpeg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2024\/08\/crop-event_124531_original-1.jpeg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2024\/08\/crop-event_124531_original-1.jpeg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2024\/08\/crop-event_124531_original-1.jpeg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2024\/08\/crop-event_124531_original-1.jpeg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2024\/08\/crop-event_124531_original-1.jpeg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2024\/08\/crop-event_124531_original-1.jpeg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2024\/08\/crop-event_124531_original-1.jpeg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2024\/08\/crop-event_124531_original-1.jpeg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2024\/08\/crop-event_124531_original-1.jpeg" }, "occurrence_count":1, "first_occurrence":21853147 } , "84303-21621383": { "datetime_modified":"20240130T121551", "datetime_start":"20240906T100000", "datetime_end":"20240906T200000", "has_end_time":1, "date_start":"2024-09-06", "date_end":"2024-09-06", "time_start":"10:00:00", "time_end":"20:00:00", "time_zone":"America\/Detroit", "event_title":"Unsettling Histories: Legacies of Slavery and Colonialism", "occurrence_title":"", "combined_title":"Unsettling Histories: Legacies of Slavery and Colonialism", "event_subtitle":"", "event_type":"Exhibition", "event_type_id":"7", "description":"Organized as a response to the Museum\u2019s recent acquisition of Titus Kaphar\u2019s Flay (James Madison), this upcoming reinstallation of one of our most prominent gallery spaces forces us to grapple with our collection of European and American art, 1650-1850.\n \nIn recent times, growing public awareness of the continued reverberations of the legacy of slavery and colonization has challenged museums to examine the uncomfortable histories contained in our collections, and challenged the public to probe the choices we make about those stories. Choices about which artists you see in our galleries, choices about what relevant facts we share about the works, and choices about what - out of an infinite number of options - we don\u2019t say about them.\n \nPieces in this exhibition were made at a time when the world came to be shaped by the ideologies of colonial expansion and Western domination. And yet, that history and the stories of those marginalized do not readily appear in the still lives and portraits on display here. By grappling with what is visible and what remains hidden, we are forced to examine whose stories and histories are prioritized and why.\u00a0\u00a0\n \nIn this online exhibition, you can explore our efforts to deeply question the Museum\u2019s collection and our own past complicity in favoring colonial voices. In the Museum gallery, which will open in early 2021, you\u2019ll be able to experience the changes we\u2019re making to the physical space to highlight a more honest version of European and American history.\u00a0\n \nBy challenging our own practice, and continuing to add to what we know and what we write about the works we display, UMMA tells a more complex and more complete story of this nation - one that unsettles, and fails to settle for, simple narratives.\u00a0\n \n\u201cInvisible things are not necessarily \u2018not there\u2019.... Certain absences are so stressed, so ornate, so planned, they call attention to themselves; arrest us with intentionality and purpose, like neighborhoods that are defined by the population held away from them.\u201d\u00a0\n \n\u2014 Toni Morrison\n\nLead support for Unsettling Histories: Legacies of Slavery and Colonialism\u00a0is provided by the University of Michigan Office of the Provost,\u00a0the U-M Arts Initiative, and the Susan and Richard Gutow Endowed Fund.\n\u00a0", "occurrence_notes":null, "guid":"84303-21621383@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/84303", "building_id":"1000151", "building_name":"Museum of Art", "campus_maps_id":"11", "room":"European and American Decorative Art", "location_name":"Museum of Art", "has_livestream":0, "cost":"", "tags":["Museum","UMMA","Exhibition","Art","European","History"], "website":"https:\/\/twitter.com\/ummamuseum", "sponsors":[ { "group_name":"University of Michigan Museum of Art (UMMA)", "group_id":"1177", "website":"http:\/\/www.umma.umich.edu\/" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2022\/08\/event_84303_original-5.jpg", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2022\/08\/event_84303_original-5.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2022\/08\/event_84303_original-5.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2022\/08\/event_84303_original-5.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2022\/08\/event_84303_original-5.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/group_thumb\/media\/attachments\/2022\/08\/event_84303_original-5.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/group_thumb_square\/media\/attachments\/2022\/08\/event_84303_original-5.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/group_large\/media\/attachments\/2022\/08\/event_84303_original-5.jpg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/group_large_lightbox\/media\/attachments\/2022\/08\/event_84303_original-5.jpg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/event_large_crop\/media\/attachments\/2022\/08\/event_84303_original-5.jpg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/event_list\/media\/attachments\/2022\/08\/event_84303_original-5.jpg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2022\/08\/event_84303_original-5.jpg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2022\/08\/event_84303_original-5.jpg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/event_grid_2x\/media\/attachments\/2022\/08\/event_84303_original-5.jpg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/event_feature_large\/media\/attachments\/2022\/08\/event_84303_original-5.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2022\/08\/event_84303_original-5.jpg" }, "occurrence_count":470, "first_occurrence":21621195 } }