Corpus-Based Discourse Understanding in Spoken Dialogue Systems Ryuichiro Higashinaka author Mikio Nakano author Kiyoaki Aikawa author 2003-07 text Proceedings of the 41st Annual Meeting of the Association for Computational Linguistics Association for Computational Linguistics Sapporo, Japan conference publication higashinaka-etal-2003-corpus 10.3115/1075096.1075127 https://aclanthology.org/P03-1031/ 2003-07 240 247