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Information Theoretically Aided Reinforcement Learning for Embodied Agents

31 May 2016
Guido Montúfar
K. Zahedi
Nihat Ay
ArXiv (abs)PDFHTML
Abstract

Reinforcement learning for embodied agents is a challenging problem. The accumulated reward to be optimized is often a very rugged function, and gradient methods are impaired by many local optimizers. We demonstrate, in an experimental setting, that incorporating an intrinsic reward can smoothen the optimization landscape while preserving the global optimizers of interest. We show that policy gradient optimization for locomotion in a complex morphology is significantly improved when supplementing the extrinsic reward by an intrinsic reward defined in terms of the mutual information of time consecutive sensor readings.

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