Supervised categorized principal component analysis for imagined speech classification via applying singular value decomposition on a symmetry matrix. - Xiao-Ben Zheng; Bingo Wing-Kuen Ling; Song-Yi Zheng; Caijun Li (Biomed. Signal Process. Control., 2023)

A novel quaternion optimization model for imagined speech classification. - Xiao-Ben Zheng; Bingo Wing-Kuen Ling; Nuo Xu; Jian-Rong Chen; Song-Yi Zheng (J. Frankl. Inst., 2025)