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guofu 89bd1a528e Extract RobustZScoreNorm parameters and add from_version() method ... - Add extract_qlib_params.py script to extract pre-fitted mean/std parameters from Qlib's proc_list.proc and save as reusable .npy files with metadata.json - Add RobustZScoreNorm.from_version() class method to load saved parameters by version name, supporting multiple parameter versions coexistence - Update dump_polars_dataset.py to use from_version() instead of loading parameters directly from proc_list.proc - Update generate_beta_embedding.py to use qshare's filter_instruments for stock universe filtering - Save parameters to data/robust_zscore_params/csiallx_feature2_ntrla_flag_pnlnorm/ with 330 features (158 alpha158_ntrl + 158 alpha158_raw + 7 market_ext_ntrl + 7 market_ext_raw) - Update README.md with documentation for parameter extraction and usage Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>		2 days ago
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robust_zscore_params/csiallx_feature2_ntrla_flag_pnlnorm	Extract RobustZScoreNorm parameters and add from_version() method	2 days ago
.gitignore	Add qlib_loader.py with configurable date range for data loading	4 days ago