Atomic Congestion Games: Fast, Myopic and Concurrent

  • Authors:
  • D. Fotakis;A. C. Kaporis;P. G. Spirakis

  • Affiliations:
  • National Technical University of Athens, School of Electrical and Computer Engineering, 157 80, Athens, Greece;University of Patras, School of Engineering, Department of Computer Engineering & Informatics, 265 00, Patras, Greece;Research Academic Computer Computer Technology Institute, N. Kazantzakis str., University Campus, 265 00, Rio, Patras, Greece

  • Venue:
  • Theory of Computing Systems - Special Section: Algorithmic Game Theory; Guest Editors: Burkhard Monien and Ulf-Peter Schroeder
  • Year:
  • 2010

Quantified Score

Hi-index 0.00

Visualization

Abstract

We study here the effect of concurrent greedy moves of players in atomic congestion games where n selfish agents (players) wish to select a resource each (out of m resources) so that her selfish delay there is not much. The problem of “maintaining” global progress while allowing concurrent play is exactly what is examined and answered here. We examine two orthogonal settings: (i) A game where the players decide their moves without global information, each acting “freely” by sampling resources randomly and locally deciding to migrate (if the new resource is better) via a random experiment. Here, the resources can have quite arbitrary latency that is load dependent. (ii) An “organised” setting where the players are pre-partitioned into selfish groups (coalitions) and where each coalition does an improving coalitional move. Our work considers concurrent selfish play for arbitrary latencies for the first time. Also, this is the first time where fast coalitional convergence to an approximate equilibrium is shown.