The Resource Essays on social and economic networks, Timo Hiller

Essays on social and economic networks, Timo Hiller

Label
Essays on social and economic networks
Title
Essays on social and economic networks
Statement of responsibility
Timo Hiller
Creator
Contributor
Subject
Language
eng
Summary
This thesis consists of three papers in the field of social and economic networks. In the first, called Peer Effects in Endogenous Networks, I build a model of endogenous net- work formation in the presence of peer effects, which play an important role for decisions concerning educational attainment, criminal activity, labor market participation and R&D expenditures of firms. The class of payoff functions assumed induce local complementar- ities in effort levels and positive local externalities. Links are one-sided and agents move simultaneously in links and effort levels. I find that equilibrium networks display - other than the complete and the empty network - a core-periphery structure, which is commonly observed in empirical studies. Ex-ante homogenous agents may obtain very different ex-post outcomes, depending on the network that arises in equilibrium. Multiplicity of equilibria serves as an explanation for large differences in behaviour across otherwise identical groups. The second paper, titled Alliance Formation and Coercion in Networks, presents a game-theoretic model of network formation, which allows agents to enter bilateral alliances and to extract payoffs from enemies. Each pair of agents creates a surplus of one, which allies divide in equal parts. If agents are enemies, then the agent with more allies obtains a larger share of the surplus. I show that Nash equilibria are of two types. First, a state of utopia, where all agents are allies. Second, asymmetric equilibria, such that agents can be partitioned into sets of different size, where agents within the same set are allies and agents in different sets are enemies. These results stand in contrast to coalition formation games in the economics of conflict literature, where stable group structures are generally symmetric. The model also provides a game-theoretic foundation for structural balance, a long-standing notion in social psychology, which has been fruitfully applied to the study of alliance formation in international relations. The third paper, A Note on Stochastically Stable States for Alliance Formation and Coercion in Networks, introduces dynamics into the model of the second paper and provides a conjecture for stochastically stable states. At every time period t and with fixed probability p, each agent adjusts his strategy myopically, while with small probability E chooses his strategy at random. The configuration where all agents sustain only positive links is shown to not be stochastically stable. Stochastically stable state are thought to be such that the number of cliques is maximal, under a restriction on the relative size of groups
Member of
Cataloging source
IT-FiEUI
http://library.link/vocab/creatorName
Hiller, Timo
Date time place
Defence date: 9 March 2011
Dissertation note
Thesis (Ph. D.)--European University Institute (ECO), 2011.
Index
no index present
Literary form
non fiction
Nature of contents
theses
http://library.link/vocab/relatedWorkOrContributorName
European University Institute
Series statement
  • EUI PhD theses
  • EUI theses
http://library.link/vocab/subjectName
  • Business networks
  • Social networks
Label
Essays on social and economic networks, Timo Hiller
Instantiates
Publication
Note
Examining Board: Sergio Currarini, Università Ca' Foscari di Venezia; Massimo Morelli, European University Institute; Francesco Squintani, University of Essex; Fernando Vega-Redondo, Supervisor, European University Institute
Bibliography note
Includes bibliographical references (page 68)
Carrier category
volume
Carrier category code
nc
Carrier MARC source
rdacarrier.
Content category
text
Content type code
txt
Content type MARC source
rdacontent.
Control code
FIEb17101839
Dimensions
30 cm.
Extent
iv, 67 pages
Media category
unmediated
Media MARC source
rdamedia.
Media type code
n
Other physical details
illustrations
System control number
(OCoLC)851517072
Label
Essays on social and economic networks, Timo Hiller
Publication
Note
Examining Board: Sergio Currarini, Università Ca' Foscari di Venezia; Massimo Morelli, European University Institute; Francesco Squintani, University of Essex; Fernando Vega-Redondo, Supervisor, European University Institute
Bibliography note
Includes bibliographical references (page 68)
Carrier category
volume
Carrier category code
nc
Carrier MARC source
rdacarrier.
Content category
text
Content type code
txt
Content type MARC source
rdacontent.
Control code
FIEb17101839
Dimensions
30 cm.
Extent
iv, 67 pages
Media category
unmediated
Media MARC source
rdamedia.
Media type code
n
Other physical details
illustrations
System control number
(OCoLC)851517072

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