Shen, Tao, Tianyi Zhou, Guodong Long, Jing Jiang, Shirui Pan, and Chengqi Zhang. “DiSAN: Directional Self-Attention Network for RNN CNN-Free Language Understanding”. Proceedings of the AAAI Conference on Artificial Intelligence 32, no. 1 (April 27, 2018). Accessed May 31, 2026. https://ojs.aaai.org/index.php/AAAI/article/view/11941.