• Client and server games in peer-to-peer networks 

      Koutsopoulos, I.; Tassiulas, L.; Gkatzikis, L. (2009)
      We consider a content sharing network of noncooperative peers. The strategy set of each peer comprises, (i) client strategies, namely feasible request load splits to servers, and (ii) server strategies, namely scheduling ...
    • Competition and cooperation in wireless access misbehavior 

      Koutsopoulos, I. (2011)
      With the proliferation of access points and terminals, wireless access misbehavior emerges as important means of protocol misuse, whereby network entities aim at obtaining higher channel share than the one in legitimate ...
    • A game theoretic framework for data privacy preservation in recommender systems 

      Halkidi, M.; Koutsopoulos, I. (2011)
      We address the fundamental tradeoff between privacy preservation and high-quality recommendation stemming from a third party. Multiple users submit their ratings to a third party about items they have viewed. The third ...