A novel hybrid system for feature selection based on an improved gravitational search algorithm and k-NN method. - Jie Xiang; XiaoHong Han; Fu Duan; Yan Qiang; Xiaoyan Xiong; Yuan Lan; Haishui Chai (Appl. Soft Comput., 2015)

A new graph-preserving unsupervised feature selection embedding LLE with low-rank constraint and feature-level representation. - Xiaohong Han; Haishui Chai; Ping Liu; Dengao Li; Li Wang (Artif. Intell. Rev., 2020)