Is Question Answering Better than Information Retrieval? Towards a Task-Based Evaluation Framework for Question Series Jimmy Lin author 2007-04 text Human Language Technologies 2007: The Conference of the North American Chapter of the Association for Computational Linguistics; Proceedings of the Main Conference Candace Sidner editor Tanja Schultz editor Matthew Stone editor ChengXiang Zhai editor Association for Computational Linguistics Rochester, New York conference publication lin-2007-question https://aclanthology.org/N07-1027/ 2007-04 212 219