BUPTTeam Participation in NTCIR-12 Short Text Conversation Task

Abstract This paper provides an overview of BUPTTeam’s system participated in the Short Text Conversation (STC) task of Chinese at NTCIR-12. STC is a new NTCIR challenging task which is defined as an IR problem, i.e., retrieval based a repository of postcomment pairs from Sina Weibo. In this paper, we propose a novel method to retrieve post result from the repository based on the following four steps: 1) preprocessing, 2) building search index, 3) comment candidates generation, 4) comment candidates ranking. The evaluation results show that our method significantly outperforms state-of-the-art STC Chinese task.