Who's Who in Networks. Wanted: the Key Group

Umed Temurshoev ()
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Umed Temurshoev: Department of Economics and SOM Research School, University of Groningen, http://www.rug.nl/feb/index
Authors registered in the RePEc Author Service: Umed Temursho

No 08-08, Working Papers from NET Institute

Abstract: Ballester, Calvo-Armengol, and Zenou (2006, Econometrica, 74/5, pp. 1403-17) show that in a network game with local payoff complementarities, together with global uniform payoff substitutability and own concavity effects, the intercentrality measure identifies the key player - a player who, once removed, leads to the optimal change in overall activity. In this paper we search for the key group in such network games, whose members are, in general, different from the players with the highest individual intercentralities. Thus the quest for a single target is generalized to a group selection problem targeting an arbitrary number of players, where the key group is identified by a group intercentrality measure. We show that the members of a key group are rather nonredundant actors, i.e., they are largely heterogenous in their patterns of ties to the third parties.

Keywords: social networks; centrality measures; intercentrality measures; clusters; policies (search for similar items in EconPapers)
JEL-codes: A14 C72 L14 (search for similar items in EconPapers)
Pages: 25 pages
Date: 2008-09, Revised 2008-09
New Economics Papers: this item is included in nep-gth, nep-net and nep-soc
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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