ons for this project. Most recent ones are listed at the end of this abstract. In the future, feature selection will be integrated in the multi-class EM algorithm to improve the performance of semantic video understanding. A better knowledge extraction algorithm will be implemented by integrating the provider behavior model with a user behavior model. A seamless hierarchical browsing visualization interface will be used to enable users to explore the database with different level of details and over any time range. • H. Luo, J. Fan, S. Satoh, and W. Ribarsky. “Large scale news video database browsing and retrieval via information visualization”. (accepted) In ACM SAC. Seoul, Korea, 2007. • J. Fan, H. Luo, Y. Gao, and R. Jain. “Incorporating concept ontology to boost hierarchical classifier training for automatic multi-level video annotation”. (accepted) IEEE Trans. on Multimedia, 2007. • H. Luo, J. Fan, Jin Yang, W. Ribarsky, and S. Satoh. “Exploring large-scale video n...