Exploiting Language Instructions for Interpretable and Compositional Reinforcement Learning

Michiel van der Meer; Matteo Pirotta; Elia Bruni

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arXiv · 2001.04418

Exploiting Language Instructions for Interpretable and Compositional Reinforcement Learning

Michiel van der Meer·Matteo Pirotta·Elia Bruni

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Abstract

In this work, we present an alternative approach to making an agent compositional through the use of a diagnostic classifier. Because of the need for explainable agents in automated decision processes, we attempt to interpret the latent space from an RL agent to identify its current objective in a complex language instruction. Results show that the classification process causes changes in the hidden states which makes them more easily interpretable, but also causes a shift in zero-shot performance to novel instructions. Lastly, we limit the supervisory signal on the classification, and observe a similar but less notable effect.

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Michiel van der Meer, Matteo Pirotta, Elia Bruni. 2020-01-13. Exploiting Language Instructions for Interpretable and Compositional Reinforcement Learning. https://arxiv.org/abs/2001.04418

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