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Q-Table compression for reinforcement learning

Published online by Cambridge University Press:  04 December 2018

Leonardo Amado
Affiliation:
Pontifical Catholic University of Rio Grande do Sul, Av. Ipiranga 6681, Porto Alegre, RS, 90619-900, Brazil; e-mail leonardo.amado@acad.pucrs.br, felipe.meneguzzi@pucrs.br
Felipe Meneguzzi
Affiliation:
Pontifical Catholic University of Rio Grande do Sul, Av. Ipiranga 6681, Porto Alegre, RS, 90619-900, Brazil; e-mail leonardo.amado@acad.pucrs.br, felipe.meneguzzi@pucrs.br

Abstract

Reinforcement learning (RL) algorithms are often used to compute agents capable of acting in environments without prior knowledge of the environment dynamics. However, these algorithms struggle to converge in environments with large branching factors and their large resulting state-spaces. In this work, we develop an approach to compress the number of entries in a Q-value table using a deep auto-encoder. We develop a set of techniques to mitigate the large branching factor problem. We present the application of such techniques in the scenario of a real-time strategy (RTS) game, where both state space and branching factor are a problem. We empirically evaluate an implementation of the technique to control agents in an RTS game scenario where classical RL fails and provide a number of possible avenues of further work on this problem.

Type
Special Issue Contribution
Copyright
© Cambridge University Press, 2018 

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