Scientific collaboration networks: how little differences can matter a lot
Empirical studies such as Goyal, van der Leij and Moraga (2006) or Newman (2004) show that scientific collaboration networks present a highly unequal and hierarchical distribution of links. This implies that some researchers can be much more active and productive than others and, consequently, they can enjoy a much better scientific eputation. One may think that big intrinsical differences among researchers can constitute the main driving force behind these huge inequalities. We propose a model that show how almost identical individuals self-organize themselves in a very unequal and hierarchical structure as is observed in the real-world co-authorship networks. In consequence, this model provides an incentives-based explanation of that empirical evidence.
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- 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.
- Sanjeev Goyal & Marco van der Leij & José Luis Moraga-Gonzàlez, 2004.
"Economics: An Emerging Small World?,"
2004.84, Fondazione Eni Enrico Mattei.
- Àlex Arenas & Antonio Cabrales & Albert Díaz-Guilera & Roger Guimerà & Fernando Vega, 2003.
"Optimal information transmission in organizations: Search and congestion,"
Economics Working Papers
698, Department of Economics and Business, Universitat Pompeu Fabra.
- Àlex Arenas & Antonio Cabrales & Leon Danon & Albert Díaz-Guilera & Roger Guimerà & Fernando Vega-Redondo, 2010. "Optimal information transmission in organizations: search and congestion," Review of Economic Design, Springer, vol. 14(1), pages 75-93, March.
- Álex Arenas & Antonio Cabrales & Leon Danon & Albert Díaz-Guilera & Roger Guimerà & Fernando Vega-Redondo, 2003. "Optimal Information Transmission in Organizations: Search and Congestion," Working Papers 64, Barcelona Graduate School of Economics.
- Antonio Cabrales & Àlex Arenas & Albert Díaz-Guilera & Roger Guimerà & Fernando Vega-Redondo, 2004. "Optimal Information Transmission in Organizations: Search and Congestion," Working Papers 2004.77, Fondazione Eni Enrico Mattei.
- 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.
- Matt Jackson, 2003. "The Effects of Social Networks on Employment and Inequality," Theory workshop papers 658612000000000032, UCLA Department of Economics.
- Sanjeev Goyal & Sumit Joshi, 2006. "Unequal connections," International Journal of Game Theory, Springer, vol. 34(3), pages 319-349, October.
- David N. Laband & Robert D. Tollison, 2000. "Intellectual Collaboration," Journal of Political Economy, University of Chicago Press, vol. 108(3), pages 632-661, June.
- John Hudson, 1996. "Trends in Multi-authored Papers in Economics," Journal of Economic Perspectives, American Economic Association, vol. 10(3), pages 153-158, Summer.
- Goyal, Sanjeev & Vega-Redondo, Fernando, 2007. "Structural holes in social networks," Journal of Economic Theory, Elsevier, vol. 137(1), pages 460-492, November.
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