The Use of Dependency Relation Graph to Enhance the Term Weighting in Question Retrieval Weinan Zhang author Zhaoyan Ming author Yu Zhang author Liqiang Nie author Ting Liu author Tat-Seng Chua author 2012-12 text Proceedings of COLING 2012 Martin Kay editor Christian Boitet editor The COLING 2012 Organizing Committee Mumbai, India conference publication zhang-etal-2012-use https://aclanthology.org/C12-1190/ 2012-12 3105 3120