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Emergence of equilibria from individual strategies in online content diffusion

Abstract : Social scientists have observed that human behavior in society can often be modeled as corresponding to a threshold type policy. A new behavior would propagate by a procedure in which an individual adopts the new behavior if the fraction of his neighbors or friends having adopted such behavior exceeds some threshold. In this paper we study the question of whether the emergence of threshold policies may be modeled as a result of some rational process which would describe the behavior of non-cooperative rational members of some social network. We focus on situations in which individuals take the decision whether to access or not some content, based on the number of views that the content has. Our analysis aims at understanding not only the behavior of individuals, but also the way in which information about the quality of a given content can be deduced from view counts when only part of the viewers that access the content are informed about its quality. In this paper we present a game formulation for the behavior of individuals using a meanfield model: the number of individuals is approximated by a contin- uum of atomless players and for which the Wardrop equilibrium is the solution concept. We derive conditions on the problem's parameters that result indeed in the emergence of threshold equilibria policies. But we also identify some parameters in which other structures are obtained for the equilibrium behavior of individuals.
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Submitted on : Sunday, December 8, 2013 - 7:25:43 PM
Last modification on : Thursday, January 20, 2022 - 4:14:42 PM
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Eitan Altman, Francesco de Pellegrini, Rachid El-Azouzi, Daniele Miorandi, Tania Jimenez. Emergence of equilibria from individual strategies in online content diffusion. IEEE NetSciCom - 5th International Workshop on Network Science for Communication Networks, Apr 2013, Turin, Italy. pp.181-186, ⟨10.1109/INFCOMW.2013.6562879⟩. ⟨hal-00913225⟩



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