September 14, 2019
Dr. Ashwin Bahulkar presented a demo titled "Modeling and predicting human social behavior" co-authored by Boleslaw K. Szymanski, Kevin Chan and Omar Lizardo at the showcase session at the 25th ACM SIGKDD Conference on Knowledge Discovery and Data Mining, KDD'2019, in Anchorage, AK, August 4-8, 2019. The goal of the project is to predict how groups in social networks evolves over...
September 13, 2019
A new paper titled "A Regularized Stochastic Block Model for the robust community detection in complex networks," by Xiaoyan Lu and Boleslaw K. Szymanski was published in Scientific Reports, 9:13247 Sept. 13, 2019. Authors observe that the stochastic block model is able to generate random graphs with different types of network partitions, ranging from the traditional assortative...
August 29, 2019
Prof. Krzysztof Suchecki of Warsaw University of Technology presented today a seminar hosted by Prof. Szymanski titled "Detecting the source of spread in complex networks". The talk presented the results of paper by R. Paluch, X. Lu, K. Suchecki, B.K. Szymański, J.A. Hołyst, titled “Fast and accurate detection of spread source in large complex networks”, published in Scientific...
August 10, 2019
Prof. Boleslaw K. Szymanski presented the keynote talk at the Political Polarization Workshop on "Political Polarization in Legislative Branches" lead by Prof. Simon Levin in Princeton University on August 9, 2019. The talk focused on challenges to understand political polarization in legislative houses of the U.S. and selected European Union countries. Then, we describe a formal...
August 03, 2019
Prof. Boleslaw K. Szymanski presented the invited paper "A Reaction-Based Approach to Information Cascade Analysis," by James Flamino and himself at the 2019 IEEE International Conference on Computer Communication and Networking on August 1, in Valencia, Spain. The talk focused on processing online social media that provides massive open-ended platforms for users of a wide variety...
July 27, 2019
Stephen Dipple supervised by Prof. Gyorgy Korniss and Prof. Bolesaw K. Szymanski defended the Ph.D. thesis on "Modeling Complex Human Behavior in Socio-Economic Networks" in Physics. The thesis focuses on human behavior seen as a complex system of interacting individuals. These complex interactions can be de fined in terms of an encounter graph where people represent nodes and...
July 25, 2019
Dr. Ashwin Bahulkar supervised by Prof. Bolesaw K. Szymanski defended the Ph.D. thesis on "Evolution Dynamics of Attribute-Rich Social Networks" and will join Facebook in August 2019. In the thesis the author study the evolution dynamics in attribute-rich social networks. First, he demonstrates that node attributes can be used to predict the formation and dissolution of new links...
July 19, 2019
A paper titled "The evolution of polarization in the legislative branch of government," by Xiaoyan Lu, Jianxi Gao, and Boleslaw K. Szymanski was published by J. R. Soc. Interface,16:20190010, 2019. The paper studies the polarization of political opinions among members of the U.S. legislative chambers as measured by their voting records. The authors finds that polarization is...
July 06, 2019
Dr. Xiang Niu supervised by Professor Bolesaw K. Szymanski defended the Ph.D. thesis "The Dynamics in Opinion and Global Risk Networks: Modeling, Discovering and Control" and will join Google, Inc. in Montain View, CA in August 2019. Dr. Xiang was also co-advised by Professors Gyorgy Korniss of Physics and Jianxi Gao of Computer Science. This dissertation focuses on modeling...
July 01, 2019
Dr. Xiaoyan Lu supervised by Prof. Bolesaw K. Szymanski defended the Ph.D. thesis "Community Detection and its Applications in Understanding Dynamics of Social Networks" in March 2019 and graduated in May 2019. Dr. Lu will join Google, Inc. in New York, NY. His thesis focuses on community detection and its applications. Modularity is perhaps the most widely used quality metric to...
June 28, 2019
Prof. Boleslaw K. Szymanski presented an invited talk on "Data Analytics on Impact of Crime on Quality of Life" at the 2019 Center for Crime Evidence-Based Criminal Policy (CEBCP) Seminar at George Mason University, Arlington, VA on June 27, 2019. The talk discussed time and space distribution of crime activities in Chicago. The study used 2002-2017 crime data in 77 Chicago...
June 08, 2019
A paper titled "Modeling Human Temporal Dynamics in Agent-Based Simulations," by James Flamino, Weike Dai, and Boleslaw K. Szymanski was published in Proceedings of the 2019 ACM SIGSIM Conference on Principles of Advanced Discrete Simulations, ACM SIGSIM-PADS'19, Chicago, IL, June 3-5, 2019, ACM Press, pp. 99-103. The paper focuses on time-based habitual human behavior exhibited...
June 07, 2019
The paper titled: "Predicting complex user behavior from CDR based social networks," by Casey Doyle, Zala Herga, Stephen Dipple, Boleslaw K. Szymanski, Gyorgy Korniss, and Dunja Mladenic was published in Information Systems vol. 500, pp. 217-228 on May 30, 2019. The paper focuses on use of Call Detail Record (CDR) datasets that provide enough information about personal interactions...
June 06, 2019
Dr. Dunja Mladenic, Professor at J. Stefan International Postgraduate School and Head of Artificial Intelligence Laboratory at J. Stefan Institute, Slovenia presented NEST seminar hosted by Boleslaw K. Szymanski and titled "Observing User Mobility." The talk started with observation that today we are used to being interconnected via our smartphones and having our phone location...
May 16, 2019
Julian Sienkiewicz, Associate Professor from the Department of Physics at Warsaw University of Technology in Warsaw, Poland, presented a talk titled "Cricriticality in the q-neighbor Ising model on a partially duplex clique". In the talk Prof. Sienkiewicz shows how a modified kinetic Ising model -- a so-called q-neighbor Ising model -- behaves on a duplex clique and a partially...