Sridhar, Muralikrishna, Anthony Cohn, and David Hogg. “Unsupervised Learning of Event Classes from Video”. Proceedings of the AAAI Conference on Artificial Intelligence 24, no. 1 (July 5, 2010): 1631–1638. Accessed May 21, 2026. https://ojs.aaai.org/index.php/AAAI/article/view/7726.