1. KULIC D, NAKAMURA Y. Incremental learning of human behaviors using hierarchical hidden Markov models [C]// IEEE International Conference on Intelligent Robots and Systems. Taipei: Intelligent Robots and Systems (IROS), 2010: 4649–4655.
2. ZHOU Han-ning, KIMBER D. Unusual event detection via multi-camera video mining [C]// 18th International Conference on Pattern Recognition. Hong Kong: CICPR, 2006: 1161–1166.
3. NAPHADE M R, HUANG T S. A probabilistic framework for semantic indexing and retrieval in video [C]// IEEE International Conference on Multimedia and Expo. New York: IEEE Press, 2000: 475–478.
4. NIU F, ABDEL-MOTTALEB M. HMM-based segmentation and recognition of human behaviors from video sequences [C]// IEEE International Conference on Multimedia and Expo. Amsterdam: IEEE Press, 2005: 804–807.
5. LI He-ping, HU Zhan-yi, WU Yi-hong, WU Fu-chao. Behavior modeling and abnormality detection based on semi-supervised learning method [J]. Journal of Software, 2007, 18(3): 527–537. (in Chinese)