TY  - RPRT
        AU  - Martí, Joan de
AU  - Zenou, Yves
        TI  - Social Networks
        PY  - 2009/Dec/
        PB  - Institute of Labor Economics (IZA)
        CY  - Bonn
        T2  - IZA Discussion Paper
        IS  - 4621
        UR  - https://www.iza.org/index.php/publications/dp4621
        AB  - We survey the literature on social networks by putting together the economics, sociological and physics/applied mathematics approaches, showing their similarities and differences. We expose, in particular, the two main ways of modeling network formation. While the physics/applied mathematics approach is capable of reproducing most observed networks, it does not explain why they emerge. On the contrary, the economics approach is very precise in explaining why networks emerge but does a poor job in matching real-world networks. We also analyze behaviors on networks, which take networks as given and focus on the impact of their structure on individuals’ outcomes. Using a game-theoretical framework, we then compare the results with those obtained in sociology.
        KW  - random graph
KW  - game theory
KW  - centrality measures
KW  - network formation
KW  - weak and strong ties
        ER  -