- MLTrainer class with feature matrix builder from top factors by IC
- LightGBM training with time-series split (80/20) and early stopping
- Feature importance analysis (gain-based) with ranking
- Model persistence: model.txt + metadata.json + feature_importance.json + CSV
- Feedback generation for factor generation loop
- Model loading from disk
- Full pipeline: load factors -> train -> save -> generate feedback
- 46 unit tests covering all features
- lightgbm and scipy added to requirements.txt
Created rdagent/scenarios/qlib/local/data_loader.py:
- OHLCV loading with thread-safe caching
- Factor metadata loading (sorted by IC)
- Factor time-series loading with alignment
- Feature matrix builder
- Randomized factor selection for diverse strategies
- 11 tests passing
Note: data_loader.py is in local/ (closed source)
Test file is public to validate interface.
TPTBusiness