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Q-Learning Error Analysis Reveals Overestimation Dynamics

Researchers have developed a novel finite-time error analysis for Q-learning algorithms using constant step sizes. The analysis decomposes the error into negative and positive components, revealing that the negative part is governed by a stable linear time-invariant system tied to an optimal policy. This method identifies an asymmetry in Q-learning error dynamics, linking overestimation to the propagation of positive errors via the Bellman maximum. AI

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IMPACT Provides a deeper theoretical understanding of Q-learning error dynamics, potentially leading to more robust and efficient reinforcement learning agents.

RANK_REASON Academic paper detailing a new theoretical analysis of a reinforcement learning algorithm. [lever_c_demoted from research: ic=1 ai=1.0]

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Q-Learning Error Analysis Reveals Overestimation Dynamics

COVERAGE [1]

  1. arXiv cs.AI TIER_1 · Donghwan Lee ·

    Sign-Separated Finite-Time Error Analysis of Q-Learning

    This paper develops a sign-separated finite-time error analysis for constant step-size Q-learning. Starting from the switching-system representation, the error is decomposed into its componentwise negative and positive parts. The negative part is dominated by a lower comparison l…