Flexible Answer Typing with Discriminative Preference Ranking Christopher Pinchak author Dekang Lin author Davood Rafiei author 2009-03 text Proceedings of the 12th Conference of the European Chapter of the ACL (EACL 2009) Alex Lascarides editor Claire Gardent editor Joakim Nivre editor Association for Computational Linguistics Athens, Greece conference publication pinchak-etal-2009-flexible https://aclanthology.org/E09-1076/ 2009-03 666 674