A Novel K-Means with SHAP Feature Selection and ROA-Optimized SVM for Sleep Monitoring from Ballistocardiogram Signals. - Wang, Xu; Li, Fan-Yang; Wang, Yan; Wang, Liang-Hung; Wu, Wei-Yin; Lee, Zne-Jung; Kang, Wen; Lin, Chien-Yu (Mathematics (2227-7390), 2026)