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Network Formation with Heterogeneous Players

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Author Info
Andrea Galeotti ()
Sanjeev Goyal ()
Jurjen Kamphorst ()

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Abstract

This paper studies a connections model of network formation in which players are heterogeneous with respect to values as well as the cost of forming links. We start by showing that value heterogeneity is important in determining the level of connectedness of a network, while cost heterogeneity is important in shaping both the level of connectedness as well as the architecture of individual components in a network. We then explore the role of cost heterogeneity in a society which is divided into distinct groups and intra-group links are cheaper as compared to inter-group links. Here we find that inter-connected stars with locally central players are socially efficient as well as dynamically stable. We interpret our results as saying that centrality, center-sponsorship and small diameter are robust features of networks.

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File URL: http://www.essex.ac.uk/economics/discussion-papers/papers-text/dp562.pdf
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Paper provided by University of Essex, Department of Economics in its series Economics Discussion Papers with number 562.

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Date of creation: 08 Sep 2003
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Handle: RePEc:esx:essedp:562

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  1. Sudipta Sarangi & Pascal Billand & Christophe Bravard, . "Heterogeneity in Nash Networks," Departmental Working Papers 2006-18, Department of Economics, Louisiana State University. [Downloadable!]
  2. Andrea Galeotti & Miguel Meléndez, 2004. "Exploitation and Cooperation in Networks," Tinbergen Institute Discussion Papers 04-076/1, Tinbergen Institute. [Downloadable!]
  3. Sudipta Sarangi & Rajgopal Kannan & Lydia Ray, . "The Structure of Information Networks," Departmental Working Papers 2004-05, Department of Economics, Louisiana State University. [Downloadable!]
    Other versions:
  4. Alfonso Miranda, 2003. "Socio-economic characteristics, completed fertility, and the transition from low to high order parities in Mexico," Labor and Demography 0308001, EconWPA. [Downloadable!]
  5. Chantarat, Sommarat & Barrett, Christopher B., 2007. "Social Network Capital, Economic Mobility and Poverty Traps," MPRA Paper 1947, University Library of Munich, Germany. [Downloadable!]
    Other versions:
  6. Matthew O. Jackson & Brian W. Rogers, 2005. "Search in the Formation of Large Networks: How Random are Socially Generated Networks?," Game Theory and Information 0503005, EconWPA. [Downloadable!]
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  7. Hans Haller & Jurjen Kamphorst & Sudipta Sarangi, 2007. "(Non-)existence and Scope of Nash Networks," Economic Theory, Springer, vol. 31(3), pages 597-604, June. [Downloadable!] (restricted)
    Other versions:
  8. Goeree,Jacob K. & Riedl,Arno & Ule,Aljaz, 2005. "In Search of Stars: Network Formation among Heterogeneous Agents," Research Memoranda 032, Maastricht : METEOR, Maastricht Research School of Economics of Technology and Organization. [Downloadable!]
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  9. Matthew O. Jackson & Brian W. Rogers, 2005. "The Economics of Small Worlds," Game Theory and Information 0503004, EconWPA. [Downloadable!]
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  10. Pramila Krishnan & Emanuela Sciubba, 2006. "Links and Architecture in Village Networks," Birkbeck Working Papers in Economics and Finance 0614, Birkbeck, School of Economics, Mathematics & Statistics. [Downloadable!]
  11. Pascal Billand & Christophe Bravard & Sudipta Sarangi, 2007. "Existence of Nash Networks in One-Way Flow Models," Discussion Papers of DIW Berlin 751, DIW Berlin, German Institute for Economic Research. [Downloadable!]
    Other versions:
  12. Sudipta Sarangi & Pascal Billand & Christophe Bravard, . "Existence of Nash Networks in One-Way Flow Models (Revised Version of LSU Working Paper 2006-05)," Departmental Working Papers 2007-02, Department of Economics, Louisiana State University. [Downloadable!]
  13. Matthew O. Jackson, 2003. "A survey of models of network formation: Stability and efficiency," Working Papers 1161, California Institute of Technology, Division of the Humanities and Social Sciences. [Downloadable!]
    Other versions:
  14. Miguel A. Meléndez-Jiménez, 2007. "A Bargaining Approach To Coordination In Networks," Working Papers. Serie AD 2007-28, Instituto Valenciano de Investigaciones Económicas, S.A. (Ivie). [Downloadable!]
  15. Krishnan, P. & Sciubba, E., 2004. "Links and Architecture in Village Networks (previously: Endogenous Network Formation and Informal Institutions in Village Economies)," Cambridge Working Papers in Economics 0462, Faculty of Economics, University of Cambridge. [Downloadable!]
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