非负矩阵因子及在人脸表情识别中的应用
黄 勇
Non-negative matrix factorization and its applications in facial expression recognition
HUANG Yong
计算机工程与应用 . 2010, (26): 182 -183 .  DOI: 10.3778/j.issn.1002-8331.2010.26.056