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Continuous-Time Policy Gradient from Discrete Data: Convergence Analysis and Model-Free Algorithms

Martin Hernandez, Xinyan Qing, Mo Zhou, Yuhua Zhu · 2026 · arXiv

DOI: 10.48550/arXiv.2610.28580 · open-access PDF

Portuguese

A aprendizagem de reforço contínuo-tempo procura uma política ideal sob dinâmica desconhecida impulsionada por equações diferenciais estocásticas usando observações coletadas em tempos discretos. Desenvolvemos um quadro de gradientes de políticas que combina análise de convergência rigorosa com aprendizagem a partir de dados discretos. Primeiro estabelecemos uma diferença de desempenho e derivamos fórmulas de gradientes de políticas para políticas aleatórias e parametrizadas.

Machine translation (Meta M2M100); the English original follows.

Abstract

Continuous-time reinforcement learning seeks an optimal policy under unknown dynamics driven by stochastic differential equations using observations collected at discrete times. We develop a policy gradient framework that combines rigorous convergence analysis with learning from discrete data. We first establish a performance difference lemma and derive policy gradient formulas for randomized and parametrized policies. We then prove exponential convergence of an entropy-regularized policy flow to the regularized optimum. For discrete parametrized updates, we derive a convergence bound that exp

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