Combining Optimal Clustering and Hidden Markov Models for Extractive Summarization Pascale Fung author Grace Ngai author Chi-Shun Cheung author 2003-07 text Proceedings of the ACL 2003 Workshop on Multilingual Summarization and Question Answering Association for Computational Linguistics Sapporo, Japan conference publication fung-etal-2003-combining 10.3115/1119312.1119315 https://aclanthology.org/W03-1203/ 2003-07 21 28