符号数据的无监督学习:一种空间变换方法
王建新,钱宇华
Unsupervised Learning from Categorical Data:A Space Transformation Approach
WANG Jian-xin and QIAN Yu-hua
计算机科学 . 2016, (1): 89 -93 .  DOI: 10.11896/j.issn.1002-137X.2016.01.021