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Peng Yang

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#machine learning Preprint Oct 2026

Hitting-Time Bounds for Asynchronous Q-Learning

We study the last iterate of standard asynchronous Q-learning from a single trajectory of a finite Markov decision process. The trajectory follows a fixed behavior policy whose state--action chain is irreducible and may be periodic. For discount factor $\gamma$, write $H=(1-\gamma)^{-1}$, and let $\mu_{\min}$ be the mi...

Peng Yang · 0 citations
#machine learning Preprint Aug 2026

Task-Resolved Fisher Spectroscopy for Quantum Reservoir Computing

The framework connects benchmark performance to experimentally actionable diagnoses of reservoir encoding, measurement choice, classical representation, and shot allocation and introduces task-resolved Fisher spectroscopy, in which prediction targets define orthonormal score coordinates on the stationary distribution o...

Peng Yang · 0 citations
#machine learning Preprint Aug 2026

Online Inference in Distributional Temporal-Difference Learning

A local asymptotic theory is developed for the estimated return CDF over $T^{-1/2}$-neighborhoods of finitely many thresholds, together with its bootstrap analogue that justifies bootstrap inference for smooth statistical functionals, including variance, CVaR, expected shortfall, and expectiles.

Peng Yang, Liangyu Zhang · 1 citation

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