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Durham e-Theses
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Essays on the economics of networks

WU, XIANGYU (2023) Essays on the economics of networks. Doctoral thesis, Durham University.



Networks (collections of nodes or vertices and graphs capturing their linkages) are a common object of study across a range of fields includ- ing economics, statistics and computer science. Network analysis is often based around capturing the overall structure of the network by some reduced set of parameters. Canonically, this has focused on the notion of centrality. There are many measures of centrality, mostly based around statistical analysis of the linkages between nodes on the network. However, another common approach has been through the use of eigenfunction analysis of the centrality matrix. My the- sis focuses on eigencentrality as a property, paying particular focus to equilibrium behaviour when the network structure is fixed. This occurs when nodes are either passive, such as for web-searches or queueing models or when they represent active optimizing agents in network games. The major contribution of my thesis is in the applica- tion of relatively recent innovations in matrix derivatives to centrality measurements and equilibria within games that are function of those measurements. I present a series of new results on the stability of eigencentrality measures and provide some examples of applications to a number of real world examples.

Item Type:Thesis (Doctoral)
Award:Doctor of Philosophy
Keywords:Economic networks, Game theory
Faculty and Department:Faculty of Social Sciences and Health > Economics, Finance and Business, School of
Thesis Date:2023
Copyright:Copyright of this thesis is held by the author
Deposited On:18 Jan 2023 15:30

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