基于稀疏约束的半监督非负矩阵分解算法 (Constrained Nonnegative Matrix Factorization with Sparseness for Image Representation). - Xuekao Hu; Fuming Sun; Haojie Li (计算机科学, 2015)

Graph regularized and sparse nonnegative matrix factorization with hard constraints for data representation. - Fuming Sun; Meixiang Xu; Xuekao Hu; Xiaojun Jiang (Neurocomputing, 2016)