A Coalitional Game Theoretic Outlook on Distributed Adaptive Parameter Estimation

Nikola Bogdanovic, Dimitris Ampeliotis, Kostas Berberidis

Research output: Contribution to journalArticleScientificpeer-review

3 Citations (Scopus)


In this paper, the parameter estimation problem based on diffusion least mean squares strategies is analyzed from a coalitional game theoretical perspective. Specifically, while selfishly minimizing only their own mean-square costs, the nodes in a network form coalitions that benefit them. Due to its nature, the problem is modeled as a non-transferable game and two scenarios are studied, one where each node’s payoff includes only a suitable estimation accuracy criterion and another one in which a graph-based communication cost is also considered. In the former scenario, we first analyze the non-emptiness of the core of the games corresponding to traditional diffusion strategies, and then, the analysis is extended to a recently proposed node-specific parameter estimation setting where the nodes have overlapped but different estimation interests. In the latter scenario, after formulating a coalitional graph game and providing sufficient conditions for its core non-emptiness, we propose a distributed graph formation algorithm, based on merge-and-split approach, which converges to a stable coalition structure.
Original languageEnglish
Pages (from-to)416-429
Number of pages14
JournalIEEE Transactions on Signal and Information Processing over Networks
Issue number2
Publication statusPublished - 2 Nov 2016


  • Games
  • Estimation
  • Game theory
  • Parameter estimation
  • Adaptive systems
  • Adaptation models
  • Information processing


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