arXiv AI By Shuoran Jiang, Wentao Zhu, Yang Xiang, Dongfeng Li, Yunan Zhang, Mengchen Zhao, Yuhui Guo, Kai Chen, Youcheng Pan, Xiangping Wu, Qingcai Chen

Functional Subnetwork Localization for Efficient Continual Learning in Large Language Models

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The paper identifies functionally specialized subnetworks in large language models using gradient‑attribution profiling, revealing that these subnetworks have minimal overlap. It introduces CiMEO, a continual learning framework that routes each training example to its corresponding subnetwork, limiting updates to selected parameters and optimizer states. On 1.4 million sequential instructions across five generative benchmarks, CiMEO outperforms other methods while reducing catastrophic forgetting and preserving pre‑trained representations.

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arXiv AI
Aug 11

Beyond Static Models: An Evolving Framework for Continual Learning in Large Language Models across Training Stages

arXiv:2603. 12658v2 Announce Type: replace-cross Abstract: Continual learning (CL) has emerged as a pivotal paradigm to enable large language models (LLMs) to dynamically adapt to evolving knowledge and sequential tasks while mitigating catastrophic forgetting, a critical limitation of the static pre-training paradigm inherent to modern LLMs.

By Hongyang Chen, Zhongwu Sun, Hongfei Ye, Kunchi Li, Xuemin Lin
arXiv AI
Sep 28

Estimating and Orthogonalizing Unknown Pre-training Gradients for Continual Fine-tuning of Large Language Models

The paper introduces EoupCT, a framework that estimates and orthogonalizes unknown pre‑training gradients to mitigate catastrophic forgetting during continual fine‑tuning of large language models. It generates pseudo data most susceptible to forgetting using a learnable soft prompt with Gumbel‑Softmax, then jointly optimizes model parameters and the prompt via a first‑order Pareto optimizer to enforce orthogonality between new task updates and the estimated gradients. Experiments on multiple LLMs show that EoupCT preserves both task‑specific performance and the models’ inherent general‑purpose knowledge.

By Bing Wang, Changchun Li, Xin-Qiang Cai, Lin Yuanbo Wu, Ximing Li, Gang Niu, Masashi Sugiyama