Modeling Dynamic Evolution of Online Friendship Network |
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Authors: | WU Lian-Ren YAN Qiang |
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Affiliation: | 1. School of Economics and Management, Beijing University of Posts and Telecommunications, Beijing 100876, China;2. Department of Electrical Engineering, Arizona State University, Tempe AZ, USA |
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Abstract: | In this paper,we study the dynamic evolution of friendship network in SNS (Social Networking Site).Our analysis suggests that an individual joining a community depends not only on the number of friends he or she has within the community,but also on the friendship network generated by those friends.In addition,we propose a model which is based on two processes:first,connecting nearest neighbors;second,strength driven attachment mechanism.The model reflects two facts:first,in the social network it is a universal phenomenon that two nodes are connected when they have at least one common neighbor;second,new nodes connect more likely to nodes which have larger weights and interactions,a phenomenon called strength driven attachment (also called weight driven attachment).From the simulation results,we find that degree distribution P(k),strength distribution P(s),and degree-strength correlation are all consistent with empirical data. |
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Keywords: | friendship network common neighbor CNN strength driven |
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