Mind the Uncertainty: Risk-Aware and Actively Exploring Model-Based Reinforcement Learning

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Mind the Uncertainty: Risk-Aware and Actively Exploring Model-Based Reinforcement Learning

Authors

Marin Vlastelica, Sebastian Blaes, Cristina Pineri, Georg Martius

Abstract

We introduce a simple but effective method for managing risk in model-based reinforcement learning with trajectory sampling that involves probabilistic safety constraints and balancing of optimism in the face of epistemic uncertainty and pessimism in the face of aleatoric uncertainty of an ensemble of stochastic neural networks.Various experiments indicate that the separation of uncertainties is essential to performing well with data-driven MPC approaches in uncertain and safety-critical control environments.

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