Shen, Bin, and Luo Si. “Non-Negative Matrix Factorization Clustering on Multiple Manifolds”. Proceedings of the AAAI Conference on Artificial Intelligence 24, no. 1 (July 3, 2010): 575–580. Accessed May 14, 2026. https://ojs.aaai.org/index.php/AAAI/article/view/7664.