Towards an argument-based method for answering why-question in Vietnamese language

In this paper, an argument-based method of answering why-questions in Vietnamese is presented. This method is developed in different way from many approaches which use cue phrases of causal relation to find the answers for why-questions. In this method, the arguments is extracted firstly, then the causal part and consequential part of every argument are split in order to index the consequential part. When a why-question is asked, the asking information is extracted and used to search for the reason, then the reason is used to identify the paragraph which can be used to answer the question. For evaluation, an experiment with keyword-based information retrieval and simple argument collecting process is conducted to show the applicability of the method.