CFS-SMOTE: A cluster sample filtering-based synthetic minority oversampling technique for imbalanced clinical data. - Xu, Zhaozhao; Xu, Panzheng; Yang, Fangyuan; Sun, Junding; Liang, Pengchen; Zhang, Yudong; Tang, Chaosheng; Li, Deguang; Pu, Bin (Knowledge-Based Systems, 2026)