Luo, Luo, Cheng Chen, Guangzeng Xie, and Haishan Ye. 2021. “Revisiting Co-Occurring Directions: Sharper Analysis and Efficient Algorithm for Sparse Matrices”. Proceedings of the AAAI Conference on Artificial Intelligence 35 (10):8793-8800. https://doi.org/10.1609/aaai.v35i10.17065.