Luo, Luo, Cheng Chen, Guangzeng Xie, and Haishan Ye. “Revisiting Co-Occurring Directions: Sharper Analysis and Efficient Algorithm for Sparse Matrices”. Proceedings of the AAAI Conference on Artificial Intelligence 35, no. 10 (May 18, 2021): 8793-8800. Accessed March 29, 2024. https://ojs.aaai.org/index.php/AAAI/article/view/17065.