arXiv Machine Learning

When does a network's training history predict its future learning better than its current state? Evidence from a response probe and a forecasting screen

The study investigates whether a neural network’s training history can better predict its future learning than its current state. Using small multilayer perceptrons trained under 42 different history regimes, the authors measured future learning at four checkpoints via a short probe that replicated the network for 100 updates on a new task. Results show that a low‑dimensional history state does not outperform a calibrated model of the current state for short‑term prediction, but in a companion screen of 1,560 synthetic regression runs, history models forecast final error better than current validation error after 12 epochs and remain comparable until 48 epochs.

arXiv Machine Learning
1d ago

Error Correction in Trained TTT Layers

arXiv:2610.16268v2 Announce Type: replace Abstract: Test-time-training (TTT) layers update fast-weight memory while processing an input sequence. A gradient-based update, however, does not by itself...

By Yuhe Hu
arXiv Machine Learning
4d ago

What Does History Add? Calendar Controls and Information-Timing Audits for University Trajectory Forecasting

The study audits the predictive value of historical summaries in a rule-based university trajectory simulator. Seventeen ridge specifications and persistence models compare current plans, past-state and past-plan summaries, and calendar-only history-length indicators across training, validation, and two family-held-out evaluations, reconstructing 16,750 routes and 804,000 monthly records. Results show modest RMSE improvements with six-month history versus current-state prediction, but negligible differences from a length-only control, with uncertain generalization to all-history summaries and notable violations in fatigue predictions.

By Zepei Cao
arXiv Machine Learning
Oct 7

What Must Replay Preserve? Separating Correctable Bias from Class Correspondence

The paper investigates what information must be preserved in replay buffers for class‑incremental learning. By treating cached predictions as temporally heterogeneous supervision, the authors separate classes known at storage time from those learned later, and evaluate the impact of deleting logit matching. Experiments on CIFAR‑100 with DER++ show that a simple task‑level offset can largely correct the cost of removing later‑class matching, while the cost of disrupting class correspondence remains.

By BoRen Deng, Xiangyue Ma, Chenglong Li, Xiaoting Du
arXiv Machine Learning
Oct 2

Backward-State Policy Is Part of the Learning Algorithm

The paper argues that the policy governing how tensors are rounded and reused during the backward pass—termed the backward‑state policy—is an integral part of the learning algorithm, not merely a memory or precision detail. Experiments with 390 M‑parameter models show that whether the backward pass reuses a forward’s rounded output or generates a new rounding can decisively affect training success, even when copy accuracy is high. The authors propose a method to determine, for each operator, which value should be read or substituted to preserve the correct gradient, and validate these predictions on PyTorch and Transformer Engine.

By Shuxiao Xie, Shuyang Xie, Dezhi Ran, Wei Yang, Tao Xie
arXiv AI
Oct 5

Prospective Hindsight: Self-Calibrating Reinforcement Learning via Prediction-Reality Gaps

Prospective Hindsight (PH) is a self‑calibrating training principle for reinforcement learning that augments any retrospective base method with a signal derived from the gap between an agent’s prospective prediction and its retrospective evaluation. By weighting gradients with a stop‑gradient surprise based on this prediction‑reality gap, PH highlights samples where the agent’s self‑model is most inaccurate and encourages the policy and predictor to co‑evolve, progressively focusing on remaining blind spots. Experiments on single‑turn verifiable tasks and a multi‑turn personal‑agent task show that PH improves both task performance and calibration across model scales, addressing overconfident failures in single‑turn settings and underconfident successes in multi‑turn settings.

By Jiaxin Zhang, Xiangyu Peng, Qinglin Chen, Yu Li, Hiroaki Hayashi, Chien-Sheng Wu