OPD Delta Analysis

This directory contains a CLI tool for analyzing the final parameter update

Delta W = W_opd - W_src

between a source HuggingFace checkpoint and an OPD-trained checkpoint.

Training follows the public implementations and configurations from verl, thunlp/OPD, and siyan-zhao/OPSD, where applicable. We thank the authors and maintainers of these projects for their efforts.

The analysis entry point is scripts/analyze_opd_delta.py.

python scripts/analyze_opd_delta.py \
  --src_model [W_src] \
  --opd_model [W_opd] \
  --out_dir outputs/opd_delta_analysis \
  --max_exact_svd_dim 4096 \
  --approx_svd_max_numel 3000000