Kun Chen Junchen Liang Junmin Liu Weilin Shen Zongben Xu Zhengjian Yao Entropy regularized fuzzy nonnegative matrix factorization for data clustering. 459-476 2024 February 15 Int. J. Mach. Learn. Cybern. 2 https://doi.org/10.1007/s13042-023-01919-1 db/journals/mlc/mlc15.html#ChenLLSXY24