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Guest Talk: Modeling Decentralized Group Coordination at Large Scale

Oren Tsur will be presenting a talk at UMSI on Friday, July 8 at 11 a.m. in North Quad 2245

07/08/2022
11:00 a.m. - Noon
In person (North Quad 2245) and online

Join Dr. Oren Tsur assistant professor (Senior Lecturer) at the Department of Software and Information Systems Engineering at Ben Gurion University for a talk at 11am in NQ for a talk on modeling decentralized group coordination at large scale. 

This event is in person and available online. 

Zoom informationhttps://umich.zoom.us/s/97956280729

Title: Modeling Decentralized Group Coordination at Large Scale

Abstract: Understanding collective decision making at a large-scale, and elucidating how community organization and community dynamics shape collective behavior are at the heart of social science research. Communities are multi-faceted, complex and dynamic. In this talk I will present two approaches for learning community representations: a generic representation that could be used as an exploratory tool to find nuanced similarities between communities, and a task oriented representation. Both representations combine multiple types of signals - textual and contextual, e.g., the (social) network structure and community dynamics.  I will show how this multi-faceted model can accurately predict large-scale collective decision-making in a distributed environment. We demonstrate the applicability of our model through Reddit's r/place - a large-scale online experiment in which millions of users, self-organized in thousands of communities, clashed and collaborated in an effort to realize their agenda.

Bio: Dr. Oren Tsur is an Assistant Professor (Senior Lecturer) at the Department of Software and Information Systems Engineering at Ben Gurion University in Israel where he heads the NLP and Social Dynamics Lab (NASLAB) and the newly founded interdisciplinary Research Center for Cyber Policy and Politics. His work combines Machine Learning, Natural Language Processing (NLP), Social Dynamics, and Complex Networks. Specifically, Oren’s work varies from sentiment analysis to modeling speakers’ language preferences, hates-speech detection, community dynamics, and adversarial influence campaigns.

Oren serves as an (S)Area Chair, editor and Senior Program Committee member in venues like ACL, EMNLP, WSDM and ICWSM and as a reviewer for journals ranging from TACL to PNAS and Nature. Oren’s work was published in top NLP and Web Science venues, most recently AAAI-22 and WWW-22.