Chenxue Yang and Mao Ye and Zijian Liu and Tao Li and Jiao Bao, Convergence Analysis of an Alternative Gradient Algorithm for Non-Negative Matrix Factorization. journal = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology. February 2014, vol. 85(1). 201 - 210 [viewed 21 September 2024]. Available from: https://publications.waset.org/pdf/9997720.