JACIII Vol.13 No.6 pp. 667-674
doi: 10.20965/jaciii.2009.p0667


Time Horizon Generalization in Reinforcement Learning: Generalizing Multiple Q-Tables in Q-Learning Agents

Yasuyo Hatcho*, Kiyohiko Hattori*, and Keiki Takadama*,**

*The University of Electro-Communications, 1-5-1, Chofugaoka, Chofu, Tokyo 182-8585, Japan

**PRESTO, Japan Science and Technology Agency (JST), 4-1-8 Honcho Kawaguchi, Saitama 332-0012, Japan

April 24, 2009
June 19, 2009
November 20, 2009
generalization, time horizon, sequential interaction, reinforcement learning
This paper focuses on generalization in reinforcement learning from the time horizon viewpoint, exploring the method that generalizes multiple Q-tables in the multiagent reinforcement learning domain. For this purpose, we propose time horizon generalization for reinforcement learning, which consists of (1) Q-table selection method and (2) Q-table merge timing method, enabling agents to (1) select which Q-tables can be generalized from among many Q-tables and (2) determine when the selected Q-tables should be generalized. Intensive simulation on the bargaining game as sequential interaction game have revealed the following implications: (1) both Q-table selection and merging timing methods help replicate the subject experimental results without ad-hoc parameter setting; and (2) such replication succeeds by agents using the proposed methods with smaller numbers of Q-tables.
Cite this article as:
Y. Hatcho, K. Hattori, and K. Takadama, “Time Horizon Generalization in Reinforcement Learning: Generalizing Multiple Q-Tables in Q-Learning Agents,” J. Adv. Comput. Intell. Intell. Inform., Vol.13 No.6, pp. 667-674, 2009.
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