arXiv AI By Shangxi Wu, Xiaorong Yan, Xiaojun Meng, Yuxiang Zhang, Jiansheng Wei

Entropic Control for Homeostatic Optimization: Pre-empting Catastrophic Forgetting via Dynamic Feedback

Read the original on arXiv AI →

The paper introduces Entropic Control for Homeostatic Optimization (ECHO), a closed‑loop framework that mitigates catastrophic forgetting in supervised fine‑tuning of large language models. By decomposing KL divergence, the authors identify output entropy as a key observable, allowing real‑time monitoring of forgetting without costly reference‑model inference. ECHO uses an elastic controller to adjust replay‑data gradient weights based on entropy deviations, and experiments on 0.6B–9B parameter models show it improves the plasticity‑stability trade‑off and remains robust across different data mixing ratios.

Machine-generated by The Flow from the publisher's headline and feed description — not written or checked by a human. The full article lives at arXiv AI.

arXiv AI
Oct 28

Generative Replay for Equilibrium Propagation: Toward Edge-Friendly Continual Learning in Hopfield Networks

The paper introduces Energy-Based Generative Replay (EB-Gen) for Equilibrium Propagation (EqProp) trained Hopfield Networks, enabling continual learning without external data buffers or architectural overhead. EB-Gen leverages the network’s intrinsic generative dynamics to produce pseudo‑samples from a frozen copy of the model, allowing internal rehearsal. Experiments on split MNIST and split CIFAR‑10 show that EB-Gen improves stability and plasticity, achieving 75 % and 64 % average accuracy respectively, outperforming several baseline methods.

By Victor Cook (LIRMM | ADAC), Gilles Sassatelli (LIRMM | ADAC), Thierry Gil (LIRMM), Mohamed Watfa (LIRMM | ADAC), Marina Reyboz (CEA-LETI)
arXiv AI
Oct 9

Stability-Plasticity Balance via Singular-Vector Selection in LLM Continual Learning

The paper introduces SVC, a parameter‑efficient continual‑learning method for large language models that uses singular‑vector channels as the unit for balancing plasticity and stability. By estimating each channel’s adaptation benefit and forgetting cost from domain‑specific and general‑domain data, SVC selectively updates only the most beneficial channels, employing knee‑based cost screening, Pareto‑front filtering, and Otsu thresholding. Experiments on four LLM families and eight downstream tasks show that SVC preserves pretrained capabilities while achieving strong performance compared to existing PEFT baselines.

By Lingxiang Wang, Hainan Zhang, Liang Pang, Hongwei Zheng, Zhiming Zheng