On the other hand, as time passed, community question answer system has accumulated a lot of QA pair archives which need to be classified correctly to guarantee the robustness of the system. This is the problem of question classification. 另一方面,随着社区问答系统的运营,积累了大量的问答对(QAP)语料,需要对问答对(QAP)进行分门别类,保障系统健壮的运行,即问句分类问题。