{ "151884-21912331": { "datetime_modified":"20260910T075005", "datetime_start":"20260922T113000", "datetime_end":"20260922T130000", "has_end_time":1, "date_start":"2026-09-22", "date_end":"2026-09-22", "time_start":"11:30:00", "time_end":"13:00:00", "time_zone":"America\/Detroit", "event_title":"Black-box learners for white-box epidemic models", "occurrence_title":"", "combined_title":"Black-box learners for white-box epidemic models: Fan Bu", "event_subtitle":"Fan Bu", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Mechanistic epidemic models are attractively interpretable, but fitting realistic models to imperfect data often involves challenging inverse problems. This talk presents two recent projects that explore hybrid approaches that combine deep learning with traditional mechanistic transmission models. First, I will discuss recent attempts of using neural posterior estimation (NPE) for simulation-based inference of stochastic epidemic models. When partial observation and large latent state spaces make likelihood-based inference computationally difficult, NPE learns to invert a stochastic simulator and approximate the posterior distribution of model parameters in a likelihood-free manner. Second, I will present a spatiotemporal epidemic-informed neural network approach based on physics-informed neural networks (PINNs). This approach incorporates a spatial interaction matrix to account for spatial or geographical dependencies in modeling epidemics across multiple regions (e.g., counties, states, etc.). The interaction matrix can be informed by external data or auxiliary information such as cross-region distance, adjacency, or mobility. These two projects provide practical examples of how flexible \u201cblack-box\u201d machine learners can support inference for structured, interpretable \u201cwhite-box\u201d epidemic models.", "occurrence_notes":null, "guid":"151884-21912331@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/151884", "building_id":"1000165", "building_name":"Weiser Hall", "campus_maps_id":"47", "room":"747", "location_name":"Weiser Hall", "has_livestream":0, "cost":"", "tags":["Complex Systems","Epidemiology","Machine Learning","Stochastic Dynamics","Epidemics","Disease"], "website":"http:\/\/instagram.com\/umichcscs", "sponsors":[ { "group_name":"The Center for the Study of Complex Systems", "group_id":"3247", "website":"https:\/\/lsa.umich.edu\/cscs\/" }, { "group_name":"Biostatistics", "group_id":"3137", "website":"http:\/\/www.sph.umich.edu\/biostat\/" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/09\/event_151884_original-1.png", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2026\/09\/event_151884_original-1.png", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2026\/09\/event_151884_original-1.png", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2026\/09\/event_151884_original-1.png", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2026\/09\/event_151884_original-1.png", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb\/media\/attachments\/2026\/09\/event_151884_original-1.png", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb_square\/media\/attachments\/2026\/09\/event_151884_original-1.png", "group_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large\/media\/attachments\/2026\/09\/event_151884_original-1.png", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large_lightbox\/media\/attachments\/2026\/09\/event_151884_original-1.png", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_crop\/media\/attachments\/2026\/09\/event_151884_original-1.png", "event_list":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_list\/media\/attachments\/2026\/09\/event_151884_original-1.png", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2026\/09\/event_151884_original-1.png", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2026\/09\/event_151884_original-1.png", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_grid_2x\/media\/attachments\/2026\/09\/event_151884_original-1.png", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_large\/media\/attachments\/2026\/09\/event_151884_original-1.png", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2026\/09\/event_151884_original-1.png" }, "occurrence_count":1, "first_occurrence":21912331 } , "149559-21906703": { "datetime_modified":"20260914T231159", "datetime_start":"20260922T113000", "datetime_end":"20260922T125000", "has_end_time":1, "date_start":"2026-09-22", "date_end":"2026-09-22", "time_start":"11:30:00", "time_end":"12:50:00", "time_zone":"America\/Detroit", "event_title":"Trade Credit Delay and the Real Effects of Prompt Payment Regulation", "occurrence_title":"", "combined_title":"Trade Credit Delay and the Real Effects of Prompt Payment Regulation: Richard Shi, University of Michigan", "event_subtitle":"Richard Shi, University of Michigan", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"About one-quarter of trade-credit obligations are paid late, and larger buyers pay later than smaller ones. Using granular Dun & Bradstreet payment records, we show that this delay is selective: larger firms delay a greater share of invoices, but not a greater share of dollars, and the invoices they delay are disproportionately small. We develop a dynamic model in which downstream buyers source from heterogeneous, relationship-specific suppliers and optimally stretch payables, trading off the working-capital benefits of delay against the risk of disrupting valuable supplier relationships. We estimate the model by simulated method of moments, targeting moments on payment behavior and buyer\u2013supplier relationship dynamics. Motivated by prompt-payment regulation such as the EU Late Payment Directive, we evaluate a mandate requiring on-time payment. The mandate lowers the exit rate of incumbent suppliers from 6.6 to 2.2 percent, but it shifts the working-capital burden onto buyers, raising their financing needs by 25 percent. Buyers respond primarily by accumulating precautionary cash, but this adjustment does not fully absorb the shock: they shrink their supplier networks by 4 percent and reduce input order sizes by 4.2 percent. These extensive and intensive margin adjustments reduce output by 4.1 percent. Prompt payment regulation therefore protects incumbent matches but shrinks the overall supply base and contracts real activity.", "occurrence_notes":null, "guid":"149559-21906703@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/149559", "building_id":"1005177", "building_name":"North Quad", "campus_maps_id":"553", "room":"4325", "location_name":"North Quad", "has_livestream":0, "cost":"", "tags":["Macroeconomics","Economics","seminar"], "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":"Michael Beauregard Seminar in Macroeconomics", "group_id":"3552", "website":"" }, { "group_name":"Department of Economics Seminars", "group_id":"3566", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/09\/event_149559_original-2.png", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_thumb\/media\/attachments\/2026\/09\/event_149559_original-2.png", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2026\/09\/event_149559_original-2.png", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_2x\/media\/attachments\/2026\/09\/event_149559_original-2.png", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_lightbox\/media\/attachments\/2026\/09\/event_149559_original-2.png", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb\/media\/attachments\/2026\/09\/event_149559_original-2.png", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb_square\/media\/attachments\/2026\/09\/event_149559_original-2.png", "group_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large\/media\/attachments\/2026\/09\/event_149559_original-2.png", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large_lightbox\/media\/attachments\/2026\/09\/event_149559_original-2.png", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_crop\/media\/attachments\/2026\/09\/event_149559_original-2.png", "event_list":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_list\/media\/attachments\/2026\/09\/event_149559_original-2.png", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_list_2x\/media\/attachments\/2026\/09\/event_149559_original-2.png", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_grid\/media\/attachments\/2026\/09\/event_149559_original-2.png", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_grid_2x\/media\/attachments\/2026\/09\/event_149559_original-2.png", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_large\/media\/attachments\/2026\/09\/event_149559_original-2.png", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_thumb\/media\/attachments\/2026\/09\/event_149559_original-2.png" }, "occurrence_count":1, "first_occurrence":21906703 } , "151926-21912462": { "datetime_modified":"20260915T042129", "datetime_start":"20260922T114000", "datetime_end":"20260922T115500", "has_end_time":1, "date_start":"2026-09-22", "date_end":"2026-09-22", "time_start":"11:40:00", "time_end":"11:55:00", "time_zone":"America\/Detroit", "event_title":"Ruthven Massage Day - September 22, 2026", "occurrence_title":"9\/22\/26: 11:40 - 11:55am", "combined_title":"Ruthven Massage Day - September 22, 2026: 9\/22\/26: 11:40 - 11:55am", "event_subtitle":"", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Ruthven Monthly Massage ProgramThe Ruthven Wellness Committee is excited to offer monthly massage sessions!Cost: $25 for a 15-minute session | $50 for a 30-minute session (2 consecutive slots)Session Limit: Maximum 30 minutes (2 consecutive slots) per personLocation: Ruthven Room #0264 (Basement level, on the left just before the Wellness Room)Accepted Payment Methods: Cash, card, or app (PayPal, Cash App, Venmo, Zelle) due at the time of your sessionNote: Slots are scheduled 20 minutes apart to allow time for cleaning between appointments. Because these sessions are in high demand, please cancel or drop your slot as early as possible if you can no longer attend.By booking a massage, I am confirming that I am physically able to participate. I agree to assume the risk and responsibility for my participation and release the University of Michigan, its agents, and employees from any and all damages, liability, claims expenses, or loss resulting from or arising out of my massage.", "occurrence_notes":null, "guid":"151926-21912462@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/151926", "building_id":"", "building_name":"", "campus_maps_id":"", "room":"", "location_name":"Ruthven Room #0264", "has_livestream":0, "cost":"", "tags":["Sessions"], "website":"https:\/\/sessions.studentlife.umich.edu\/p\/track\/17945", "sponsors":[ { "group_name":"Sessions @ Michigan", "group_id":"4791", "website":"https:\/\/sessions.studentlife.umich.edu\/" } ], "image_url":"", "styled_images":{ "event_thumb":"", "event_large":"", "event_large_2x":"", "event_large_lightbox":"", "group_thumb":"", "group_thumb_square":"", "group_large":"", "group_large_lightbox":"", "event_large_crop":"", "event_list":"", "event_list_2x":"", "event_grid":"", "event_grid_2x":"", "event_feature_large":"", "event_feature_thumb":"" }, "occurrence_count":16, "first_occurrence":21912457 } , "151702-21912063": { "datetime_modified":"20260915T042127", "datetime_start":"20260922T114500", "datetime_end":"20260922T124500", "has_end_time":1, "date_start":"2026-09-22", "date_end":"2026-09-22", "time_start":"11:45:00", "time_end":"12:45:00", "time_zone":"America\/Detroit", "event_title":"Amplifying Access: Funding Solutions for Scholarship that Matters", "occurrence_title":"What\u2019s Being Funded Now: Equity, Access, and Community Impact in Practice Panel", "combined_title":"Amplifying Access: Funding Solutions for Scholarship that Matters: Multiple conference events and sessions: What\u2019s Being Funded Now: Equity, Access, and Community Impact in Practice Panel", "event_subtitle":"Multiple conference events and sessions", "event_type":"Conference \/ Symposium", "event_type_id":"5", "description":"Amplifying Access: Funding Solutions for Scholarship that Matters is a grant-writing and funding-strategy conference designed for graduate students, faculty, postdoctoral scholars, research staff, scholar-practitioners, Bowman Scholars Network members, and campus and community partners seeking to strengthen their capacity to fund impactful scholarship.Through a keynote address, two panel conversations, experience-based workshops, scheduled Consultation Zones, Resource Fair engagement, and networking opportunities, participants will learn how to:Identify funding opportunitiesAlign projects with funder prioritiesDevelop compelling proposal narrativesCommunicate research impactBuild sustainable funding strategiesThe conference is especially attentive to scholars pursuing inclusive, community-engaged, access-oriented, equity-focused, and diversity-related research in a shifting funding landscape.Please register for each program you plan to attend. ", "occurrence_notes":null, "guid":"151702-21912063@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/151702", "building_id":"", "building_name":"", "campus_maps_id":"", "room":"", "location_name":"Rogel Ballroom", "has_livestream":0, "cost":"", "tags":["Sessions"], "website":"https:\/\/sessions.studentlife.umich.edu\/p\/track\/17901", "sponsors":[ { "group_name":"Sessions @ Michigan", "group_id":"4791", "website":"https:\/\/sessions.studentlife.umich.edu\/" } ], "image_url":"", "styled_images":{ "event_thumb":"", "event_large":"", "event_large_2x":"", "event_large_lightbox":"", "group_thumb":"", "group_thumb_square":"", "group_large":"", "group_large_lightbox":"", "event_large_crop":"", "event_list":"", "event_list_2x":"", "event_grid":"", "event_grid_2x":"", "event_feature_large":"", "event_feature_thumb":"" }, "occurrence_count":17, "first_occurrence":21911996 } , "152024-21912640": { "datetime_modified":"20260911T131259", "datetime_start":"20260922T120000", "datetime_end":"20260922T160000", "has_end_time":1, "date_start":"2026-09-22", "date_end":"2026-09-22", "time_start":"12:00:00", "time_end":"16:00:00", "time_zone":"America\/Detroit", "event_title":"\u201cWho Counts? A History of Voting in America\u201d", "occurrence_title":"", "combined_title":"\u201cWho Counts? A History of Voting in America\u201d", "event_subtitle":"", "event_type":"Exhibition", "event_type_id":"7", "description":"Changes over the course of the nineteenth century in how Americans voted, from voice vote to public ballot box to private voting booth, also saw changes in the material culture that surrounded voting. Ballots and ballot boxes, campaign pins and ribbons, blank lists and pre-printed party tickets, lanterns and banners\u2013the creative forces of the American print industry filled the country\u2019s cities and small towns with the ephemera of electioneering.\n\nAs you look at the items in this exhibit, think about what they tell us about how Americans in the past felt about voting, and about how voting felt. How did Election Days feel when they were full of parades and music and public drinking? What was it like to vote when everyone around you knew who you voted for? And, most of all, who counted as a voter, and who did the counting?\n\nOn view September 11-December 22, weekdays from 12-4 pm.", "occurrence_notes":null, "guid":"152024-21912640@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/152024", "building_id":"1000159", "building_name":"William Clements Library", "campus_maps_id":"165", "room":"", "location_name":"William Clements Library", "has_livestream":0, "cost":"", "tags":["Library","Tour","William L Clements","libraries","In Person","history","Exhibition","Exhibit","Event","Americana","american history","american culture"], "website":"https:\/\/clements.umich.edu\/exhibit\/who-counts\/", "sponsors":[ { "group_name":"William L. 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