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The Predictron: End-To-End Learning and Planning
David Silver, Hado van Hasselt, Matteo Hessel, Tom Schaul, Arthur Guez, Tim Harley, Gabriel Dulac-Arnold, David Reichert, Neil Rabinowitz, Andre Barreto, Thomas Degris
Nov 04, 2016 (modified: Jan 20, 2017)ICLR 2017 conference submissionreaders: everyone
Abstract:One of the key challenges of artificial intelligence is to learn models that are effective in the context of planning. In this document we introduce the predictron architecture. The predictron consists of a fully abstract model, represented by a Markov reward process, that can be rolled forward multiple "imagined" planning steps. Each forward pass of the predictron accumulates internal rewards and values over multiple planning depths.
The predictron is trained end-to-end so as to make these accumulated values accurately approximate the true value function, thereby focusing the model upon the aspects of the environment most relevant to planning. We applied the predictron to procedurally generated random mazes and a simulator for the game of pool. The predictron yielded significantly more accurate predictions than conventional deep neural network architectures.