Wanxiang Che author Valentin Spitkovsky author Ting Liu author 2012-07 text Haizhou Li editor Chin-Yew Lin editor Miles Osborne editor Gary Geunbae Lee editor Jong C Park editor Association for Computational Linguistics Jeju Island, Korea conference publication che-etal-2012-comparison https://aclanthology.org/P12-2003/ 2012-07 11 16