ICONIP'12 Proceedings of the 19th international conference on Neural Information Processing - Volume Part II
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For the progress in developing human-like intelligence in robots, autonomous and purposive learning of adaptive memory function is significant. The combination of reinforcement learning (RL) and recurrent neural network (RNN) seems promising for it. However, it has not been applied to a continuous state-action space task, nor has its internal representations been analyzed in depth. In this paper, in a continuous state-action space task, it is shown that a robot learned to memorize necessary information and to behave appropriately according to it even though no special technique other than RL and RNN was utilized. Three types of hidden neurons that seemed to contribute to remembering the necessary information were observed. Furthermore, by manipulate them, the robot changed its behavior as if the memorized information was forgotten or swapped. That makes us feel a potential towards the emergence of higher functions in this very simple learning system.