Identification of relations between answers with global constraints for Community-based Question Answering services Hikaru Yokono author Takaaki Hasegawa author Genichiro Kikui author Manabu Okumura author 2011-11 text Proceedings of 5th International Joint Conference on Natural Language Processing Haifeng Wang editor David Yarowsky editor Asian Federation of Natural Language Processing Chiang Mai, Thailand conference publication yokono-etal-2011-identification https://aclanthology.org/I11-1103/ 2011-11 920 928