Trimming CFG Parse Trees for Sentence Compression Using Machine Learning Approaches Yuya Unno author Takashi Ninomiya author Yusuke Miyao author Jun’ichi Tsujii author 2006-07 text Proceedings of the COLING/ACL 2006 Main Conference Poster Sessions Association for Computational Linguistics Sydney, Australia conference publication unno-etal-2006-trimming https://aclanthology.org/P06-2109/ 2006-07 850 857