Answering Questions of IAD Task using Reference Resolution of Follow-up Questions

In this paper, we will propose reference resolution method for follow-up questions in IAD task. In this method, our system classifies reference pattern of question sentences into three types and recognize antecedent using reference resolution algorithm for each type. In the evaluation, performance of our methods was not better results than our expectation. In Formal Run, our system got correct answers in 13 questions among 71 questions which our system got correct answer in Reference Run. However, according to the analysis of evaluation results, the main reason of low performance was lack of word information for recognition of referential elements. If our system can recognize word meanings correctly, some errors will not occur and reference resolution works well.