Networks Emerging in a Volatile World
The paper proposes a model to study the conditions under which complex networks emerge (or not) when agents are involved in a dynamic coordination setup. The focus, however, is not on the classical issue of equilibrium selection - instead, our aim is to shed light on how agents' efforts to coordinate a¤ect the process of network formation in a large and complex environment. The model posits that, over time, new links are created if they are pro.table, and existing links disappear due to exogenous decay. Alongside this struggle between link creation and link destruction, agents' choices in the coordination game adapt to their current local conditions and thus coevolve with the social network. The dynamic behavior of the system is studied within di¤erent time scales (the long and ultralong runs), which di¤er in the role accorded to the noise that is induced by finite populations. We characterize analytically the evolution of the modelin each case and show that, depending on the time scale under consideration, the process displays discontinuous transitions in overall connectivity, resilient transformations in network topology, and equilibrium multiplicity. This behavior is akin to that observed concerning various network phenomena where coordination and network formation display mutually reinforcing roles.
|Date of creation:||2008|
|Date of revision:|
|Contact details of provider:|| Postal: Badia Fiesolana, Via dei Roccettini, 9, 50014 San Domenico di Fiesole (FI) Italy|
Web page: http://www.eui.eu/ECO/
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- Matt Jackson, 2003.
"The Effects of Social Networks on Employment and Inequality,"
Theory workshop papers
658612000000000032, UCLA Department of Economics.
- Antoni Calvó-Armengol & Matthew O. Jackson, 2004. "The Effects of Social Networks on Employment and Inequality," American Economic Review, American Economic Association, vol. 94(3), pages 426-454, June.
- Fafchamps, Marcel & Lund, Susan, 2003.
"Risk-sharing networks in rural Philippines,"
Journal of Development Economics,
Elsevier, vol. 71(2), pages 261-287, August.
- Marcel Fafchamps & Susan Lund, . "Risk Sharing Networks in Rural Philippines," Working Papers 97014, Stanford University, Department of Economics.
- Marcel Fafchamps & Susan Lund, 2000. "Risk-Sharing Networks in Rural Philippines," Economics Series Working Papers 10, University of Oxford, Department of Economics.
- Murgai, Rinku & Winters, Paul & Sadoulet, Elisabeth & Janvry, Alain de, 2002.
"Localized and incomplete mutual insurance,"
Journal of Development Economics,
Elsevier, vol. 67(2), pages 245-274, April.
- Montgomery, James D, 1991. "Social Networks and Labor-Market Outcomes: Toward an Economic Analysis," American Economic Review, American Economic Association, vol. 81(5), pages 1407-18, December.
- McKelvey Richard D. & Palfrey Thomas R., 1995. "Quantal Response Equilibria for Normal Form Games," Games and Economic Behavior, Elsevier, vol. 10(1), pages 6-38, July.
- Weisbuch, G. & Kirman, A.P. & Herreiner, D., 1996.
96a20, Universite Aix-Marseille III.
- Sanjeev Goyal & Fernando Vega-Redondo, 2003.
"Network Formation and Social Coordination,"
481, Queen Mary University of London, School of Economics and Finance.
- Matthew O. Jackson & Brian W. Rogers, 2007. "Meeting Strangers and Friends of Friends: How Random Are Social Networks?," American Economic Review, American Economic Association, vol. 97(3), pages 890-915, June.
- Hagedoorn, John, 2002. "Inter-firm R&D partnerships: an overview of major trends and patterns since 1960," Research Policy, Elsevier, vol. 31(4), pages 477-492, May.
- Manuel Castells (ed.), 2004. "The Network Society," Books, Edward Elgar Publishing, number 3203.
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