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| Heuristically Accelerated State Backtracking Q-Learning Based on Cost Analysis |
| FANG Min,LI Hao |
| School of Computer Science and Technology,Xidian University,Xi′an 710071 |
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Abstract Since action strategy learning is time-consuming for the reinforcement learning algorithm,a heuristic reinforcement learning algorithm is presented based on state backtracking. By analyzing the repetitive states and comparing the action policies of the reinforcement learning,a cost function is defined to indicate the importance of repetitive actions. A probability-based heuristic function is presented by combining an action reward with an action cost. The proposed algorithm reinforces the importance of an action to speed up learning by the heuristic function and measures the feasibility of an action to reduce unnecessary exploration by the cost function at the same time,thus the learning efficiency is steadily improve. This cost-based action strategy is proved to be reasonable. Two simulation scenarios are built and the experimental results of robot games prove that the proposed algorithm can learn by the tradeoff between rewards and costs,and effectively improve the convergence of Q-learning.
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Received: 13 August 2012
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2013, Vol. 26 
