Regensburg 2013 – wissenschaftliches Programm

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SOE: Fachverband Physik sozio-ökonomischer Systeme

SOE 24: Group Dynamics

SOE 24.2: Vortrag

Donnerstag, 14. März 2013, 16:00–16:15, H37

Human Interact in Evolving Online Affiliation Networks — •Diego Rybski^2,1, Lazaros K. Gallos¹, Fredrik Liljeros³, Shlomo Havlin⁴, and Hernan A. Makse¹ — ¹Levich Institute and Physics Department, City College of New York, New York, New York 10031, USA — ²Potsdam Institute for Climate Impact Research, 14469 Potsdam, Germany — ³Department of Sociology, Stockholm University, S-10691, Stockholm, Sweden and Institute for Futures Studies - Box 591, SE-101 31 Stockholm, Sweden — ⁴Department of Physics, Bar-Ilan University, Ramat Gan 52900, Israel

We characterize online affiliation networks by observing their formation and evolution which allows us to analyze quantitatively the tendencies used to create ties. Therefore, we start by characterizing every single link when the tie was established in the network. This information allows us to identify significant differences in behavioral traits in the social tendencies among individuals according to their degree of activity, gender, age, popularity, and other attributes. For instance, in the particular data sets analyzed here, we find that women reciprocate connections 3 times as much as men and that this difference increases with age. Men tend to connect with the most popular people more often than women do, across all ages. On the other hand, triangular tie tendencies are similar, independent of gender, and show an increase with age. Our findings can be useful to build models of realistic social network structures and to discover the underlying laws that govern establishment of ties in evolving social networks.