English

BALF: Budgeted Activation-Aware Low-Rank Factorization for Fine-Tuning-Free Model Compression

Machine Learning 2025-10-14 v2

Abstract

Neural network compression techniques typically require expensive fine-tuning or search procedures, rendering them impractical on commodity hardware. Inspired by recent LLM compression research, we present a general activation-aware factorization framework that can be applied to a broad range of layers. Moreover, we introduce a scalable budgeted rank allocator that allows flexible control over compression targets (e.g., retaining 50% of parameters) with no overhead. Together, these components form BALF, an efficient pipeline for compressing models without fine-tuning. We demonstrate its effectiveness across multiple scales and architectures, from ResNet-20 on CIFAR-10 to ResNeXt-101 and vision transformers on ImageNet, and show that it achieves excellent results in the fine-tuning-free regime. For instance, BALF reduces FLOPs on ResNeXt-101 by 45% with only a 1-percentage-point top-1 accuracy drop.

Keywords

Cite

@article{arxiv.2509.25136,
  title  = {BALF: Budgeted Activation-Aware Low-Rank Factorization for Fine-Tuning-Free Model Compression},
  author = {David González-Martínez},
  journal= {arXiv preprint arXiv:2509.25136},
  year   = {2025}
}
R2 v1 2026-07-01T06:05:22.368Z