arXiv Computation and Language
Oct 19

Optimizing Singular Spectrum for Large Language Model Compression

The paper introduces SoCo, a compression framework that optimizes the singular spectrum of large language models using a learnable diagonal matrix to assign importance scores to SVD components. By progressively refining these scores through a three‑stage training process, SoCo adaptively prunes components while amplifying the importance of remaining ones, achieving a balance between aggressive compression and performance preservation. Experiments on multiple LLMs and benchmarks show that SoCo outperforms state‑of‑the‑art compression methods.

By Dengjie Li, Tiancheng Shen, Yao Zhou, Bernard Ghanem, Yibo Yang, Ming-Hsuan Yang
arXiv AI
Sep 10

Mind the Approximation: Fisher-Weighted SVD Compression for ViTs

The paper introduces FACTS, a structured Fisher Approximation for compressing Vision Transformers (ViTs) using Fisher-weighted SVD, which enforces token‑local aggregation while preserving within‑token activation‑gradient dependence. It also presents Constrained Rank Search (CoRS) to optimize layer‑wise rank allocation under a fixed FLOP budget. Experiments on ViTs and hybrid architectures show that FACTS improves accuracy‑efficiency trade‑offs, outperforming the strongest SVD baseline by up to +5.8 percentage points on Swin‑B without requiring finetuning.

By Moritz Thoma, Maximilian Groezinger, Maximilian Forstenh\"ausler, Emad Aghajanzadeh, Ryan Pegoud, Manoj Rohit Vemparala, Pierpaolo Mori, Alexander Frickenstein, Daniel Mueller-Gritschneder, Ulf Schlichtmann
arXiv AI
Jul 21

Sparsity-Aware Low-Rank Representation for Efficient Fine-Tuning of Large Language Models

arXiv:2601. 16991v3 Announce Type: replace-cross Abstract: Adapting large pre-trained language models to downstream tasks often entails fine-tuning millions of parameters or deploying costly dense weight updates, which hinders their use in resource-constrained environments.

By Longteng Zhang, Sen Wu, Shuai Hou, Zhengyu Qing, Zhuo Zheng, Danning Ke, Qihong Lin, Qiang Wang, Shaohuai Shi, Xiaowen Chu