# Fault Diagnosis Method for Hydraulic Directional Valves Integrating PCA and XGBoost

> Research article (Processes, 2019) · cited 61× · AI/ML

**Wikidata**: [openalex:W2971742729](https://www.wikidata.org/wiki/openalex:W2971742729)  
**Source**: https://4ort.xyz/entity/fault-diagnosis-method-for-hydraulic-directional-valves-integrating-pca-and-xgboost