Question Answering System for Non-factoid Type Questions and Automatic Evaluation based on BE Method
نویسنده
چکیده
In this paper, we describe answer extraction method for non-factoid questions. We classified non-factoid type questions into three types: why type, definition type and how type. We analyzed each type of questions and developed answer extraction patterns for these types of questions. For automatic evaluation, we have developed BE based evaluation tool for answers of questions. BE method is originally proposed by Hovy et. and we applied BE method for question answering evaluation. Evaluation is done by comparison between BEs of system answer and BEs of correct answers.
منابع مشابه
ارایه یک پیکره پرسش و پاسخ مذهبی در زبان فارسی
Question answering system is a field in natural language processing and information retrieval noticed by researchers in these decades. Due to a growing interest in this field of research, the need to have appropriate data sources is perceived. Most researches about developing question answering corpus area have been done in English so far, but in other languages as Persian, the lack of these co...
متن کاملBoosting Passage Retrieval through Reuse in Question Answering
Question Answering (QA) is an emerging important field in Information Retrieval. In a QA system the archive of previous questions asked from the system makes a collection full of useful factual nuggets. This paper makes an initial attempt to investigate the reuse of facts contained in the archive of previous questions to help and gain performance in answering future related factoid questions. I...
متن کاملA Monolithic Approach and a Type-by-Type Approach for Non-Factoid Question-answering - Yokohama National University at NTCIR-6 QAC
In order to process non-factoid questions in NTCIR6 QAC, we introduced two types of approaches. First one has a monolithic architecture that retrieves answer passages related to a question using lexical chain. The other one has a type-by-type architecture and consists of four subsystems: i) the subsystem for definitional and other-type questions, ii) the subsystem for why-type questions, iii) t...
متن کاملA Syntactic Approach to Domain-Specific Automatic Question Generation
Factoid questions are questions that require short fact-based answers. Automatic generation (AQG) of factoid questions from a given text can contribute to educational activities, interactive question answering systems, search engines, and other applications. The goal of our research is to generate factoid sourcequestion-answer triplets based on a specific domain. We propose a fourcomponent pipe...
متن کاملThe Role of Lexical Features in Question Answering for Spanish
This paper describes the prototype developed in the Language Technologies Laboratory at INAOE for the Spanish monolingual QA evaluation task at CLEF 2005. The proposed approach copes with the QA task according to the type of question to solve (factoid or definition). In order to identify possible answers to factoid questions, the system applies a methodology centered in the use of lexical featu...
متن کامل