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Deterministic Policies for Constrained Reinforcement Learning in Polynomial Time

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arxiv 2405.14183 v2 pith:L7SQFY5R submitted 2024-05-23 cs.LG cs.DS

classification cs.LGcs.DS
keywords policiesdeterministicalgorithmconstrainedcostcriterialearningpolynomial-time
verification ladder T0 review T1 audit T2 compute T3 formal
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We present a novel algorithm that efficiently computes near-optimal deterministic policies for constrained reinforcement learning (CRL) problems. Our approach combines three key ideas: (1) value-demand augmentation, (2) action-space approximate dynamic programming, and (3) time-space rounding. Our algorithm constitutes a fully polynomial-time approximation scheme (FPTAS) for any time-space recursive (TSR) cost criteria. A TSR criteria requires the cost of a policy to be computable recursively over both time and (state) space, which includes classical expectation, almost sure, and anytime constraints. Our work answers three open questions spanning two long-standing lines of research: polynomial-time approximability is possible for 1) anytime-constrained policies, 2) almost-sure-constrained policies, and 3) deterministic expectation-constrained policies.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Polynomial-Time Approximability of Constrained Reinforcement Learning

    cs.DS 2025-02 conditional novelty 7.0 of 10

    Constrained MDPs with recursively computable cost criteria admit polynomial-time (0, epsilon)-bicriteria approximations.

  2. Unifying and Optimizing Data Values for Selection via Sequential Decision-Making

    cs.AI 2025-02 reject novelty 6.0 of 10

    Data selection is reframed as dynamic programming over an MDP, existing data values are shown to be myopic linear approximations, and a bipartite coverage surrogate is proposed, but its exact optimality guarantee is unsound.

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