A q-learning based adaptive bidding strategy in combinatorial auctions

  • Authors:
  • Xin Sui;Ho-Fung Leung

  • Affiliations:
  • The Chinese University of Hong Kong, Shatin, Hong Kong, China;The Chinese University of Hong Kong, Shatin, Hong Kong, China

  • Venue:
  • Proceedings of the 11th International Conference on Electronic Commerce
  • Year:
  • 2009

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Abstract

Combinatorial auctions, where bidders are allowed to put bids on bundle of items, are the subject of increasing research in recent years. Combinatorial auctions can lead to better social efficiencies than tractional auctions in the resource allocation problem when bidders have complementarities and substitutabilities among items. Although many works have been conducted on combinatorial auctions, most of them focus on the winner determination problem and the auction design. A large unexplored area of research in combinatorial auctions is the bidding strategies. In this paper, we propose a Q-learning based adaptive bidding strategy for combinatorial auctions in static markets. The bidder employing this strategy can transit among different states, gradually converge to the optimal one, and obtain a high utility in the long-term run. Experiment results show that the Q-learning based adaptive strategy performs fairly well when compared to the optimal strategy and outperforms the random strategy and our previous adaptive strategy in different market environments, even without any prior knowledge.