1. Unsupervised feature selection applied to content-based retrieval of lung images;Dy;IEEE Trans. Pattern Anal. Mach. Intell.,2003
2. J. Tang, H. Liu, Unsupervised feature selection for linked social media data, in: Proceedings of the 18th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, pp. 904–912.
3. D. Cai, C. Zhang, X. He, Unsupervised feature selection for multi-cluster data, in: Proceedings of the 16th ACM SIGKDD International Conference on Knowledge Discovery and Data Mining, pp. 333–342.
4. An introduction to variable and feature selection;Guyon;J. Mach. Learn. Res.,2003
5. Feature selection for unsupervised learning;Dy;J. Mach. Learn. Res.,2004