Exact First-Passage Time Response Theory from Steady-State Response

arXiv:2608.11202 2026 Dynamics 1 ideas extracted · analyzed Sep 1, 2026

What the math gives to ML

The paper provides a nonstandard response-theory mechanism: the transient sensitivity of a mean first-passage time can be converted exactly into a steady-state response of an auxiliary continuous-time Markov process. This is transferable to neural networks whose hidden-state evolution is modeled as a stochastic transition system, especially recurrent networks, state-space models, diffusion samplers, and neural controllers with threshold events. The most practical adaptation is a first-passage response regularizer: construct a reset auxiliary process for a desired target event, estimate its stationary occupancy under perturbations, and use the resulting response to predict and control changes in decision or sampling latency without repeatedly simulating long hitting-time trajectories.

Ideas from this paper

Failed on benchmark 2026

Steady-State First-Passage Sensitivity Regularizer

Treat a neural hidden-state process as a finite or discretized continuous-time Markov chain and define a target event as first entry into a target state set. Instead of estimating the derivative of the mean hitting time by expensive long rollouts, build an auxiliary regenerative chain that resets to the source state after reaching the target and estimate the same response from its stationary distribution. Penalize disagreement between this response prediction and short empirical perturbation…

Useful7/10
Difficulty6/10
Novelty8/10
Paper: Exact First-Passage Time Response Theory from Steady-State Response arXiv:2608.11202