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Samuel Lobel

2 accepted papers

2023

Coarse-Grained Smoothness for Reinforcement Learning in Metric Spaces

AISTATS 2023poster

Principled decision-making in continuous state–action spaces is impossible without some assumptions. A common approach is to assume Lipschitz continuity of the Q-function. We show that, unfortunately, this property fails to hold in many typical domains. We propose a new coarse-grained smoothness def…

Cited by 1SourcePDFScholar
2023

Q-functionals for Value-Based Continuous Control

AAAI 2023technical

We present Q-functionals, an alternative architecture for continuous control deep reinforcement learning. Instead of returning a single value for a state-action pair, our network transforms a state into a function that can be rapidly evaluated in parallel for many actions, allowing us to efficiently…