Decay of correlations and normal approximation for nonstationary heterochaos baker maps
arXiv:2608.29135
2026
Dynamics
1 ideas extracted · analyzed Sep 1, 2026
What the math gives to ML
The paper provides a uniform statistical-stability mechanism for deterministic, nonstationary compositions of heterochaos baker maps: despite arbitrary admissible parameter variation, sufficiently regular initial distributions lose memory exponentially fast. Its transferable asset is not the specific baker map, but the construction of a time-varying dynamical system with a sequence-independent mixing rate and a corresponding central-limit approximation. A practical neural analogue is a recurrent or state-space architecture whose transition parameters change during training or across inference time, while an explicit forgetting monitor and constraint enforce a common decay envelope. The key falsifiable prediction is that hidden-state distributions initialized differently should converge at an approximately exponential rate even under parameter schedules unseen during training.
Ideas from this paper
Unverified
2026
Build a recurrent or state-space network with time-dependent transition parameters, but train it to forget perturbations at a common exponential rate across all admissible parameter schedules. The model should retain task-relevant long-term signals while suppressing dependence on arbitrary initial hidden states, reducing instability under changing inputs, curricula, or deployment-time dynamics.
Useful6/10
Difficulty5/10
Novelty6/10