Gao, Tian, Dharmashankar Subramanian, Karthikeyan Shanmugam, Debarun Bhattacharjya, and Nicholas Mattei. “A Multi-Channel Neural Graphical Event Model With Negative Evidence”. Proceedings of the AAAI Conference on Artificial Intelligence 34, no. 04 (April 3, 2020): 3946-3953. Accessed May 25, 2022. https://ojs.aaai.org/index.php/AAAI/article/view/5810.