PT-LGBM: An End-to-End Interpretable Cross-Domain Model for High-Speed Train Bearing Fault Diagnosis Under Class Imbalance
This paper proposes PT-LGBM, an end-to-end interpretable cross-domain model that integrates geometry-partition sampling, feature alignment, and an optimized LightGBM classifier to achieve high-accuracy, reliable fault diagnosis for high-speed train bearings under conditions of class imbalance and domain shift.