Semantic-based Estimation of Term Informativeness Kirill Kireyev author 2009-06 text Proceedings of Human Language Technologies: The 2009 Annual Conference of the North American Chapter of the Association for Computational Linguistics Mari Ostendorf editor Michael Collins editor Shri Narayanan editor Douglas W Oard editor Lucy Vanderwende editor Association for Computational Linguistics Boulder, Colorado conference publication kireyev-2009-semantic https://aclanthology.org/N09-1060/ 2009-06 530 538