A note on competitive diffusion through social networks

Noga Alon, Michal Feldman, Ariel D. Procaccia*, Moshe Tennenholtz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We introduce a game-theoretic model of diffusion of technologies, advertisements, or influence through a social network. The novelty in our model is that the players are interested parties outside the network. We study the relation between the diameter of the network and the existence of pure Nash equilibria in the game. In particular, we show that if the diameter is at most two then an equilibrium exists and can be found in polynomial time, whereas if the diameter is greater than two then an equilibrium is not guaranteed to exist.

Original languageEnglish
Pages (from-to)221-225
Number of pages5
JournalInformation Processing Letters
Issue number6
StatePublished - 15 Feb 2010


FundersFunder number
Hermann Minkowski Minerva Center for Geometry
USA Israeli BSF
Seventh Framework Programme226718
European Research Council
Israel Science Foundation
Tel Aviv University


    • Algorithmic game theory
    • Graph algorithms
    • Social networks


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