tailieunhanh - Báo cáo khoa học: "How to build a QA system in your back-garden: application for Romanian"

Even though the question answering (QA) field appeared only in recent years, there are systems for English which obtain good results for opendomain questions. The situation is very different for other languages, mainly due to the lack of NLP resources which are normally used by QA systems. In this paper, we present a project which develops a QA system for Romanian. The challenges we face and decisions we have to make are discussed. | How to build a QA system in your back-garden application for Romanian Constantin Orăsan Computational Linguistics Group University of Wolverhampton Doina Tatar Gabriela erban Dana Lupsa and Adrian Onet Faculty of Mathematics and Computer Science Babes-Bolyai University dtatar gabis davram adrian @ Abstract Even though the question answering QA field appeared only in recent years there are systems for English which obtain good results for opendomain questions. The situation is very different for other languages mainly due to the lack of NLP resources which are normally used by QA systems. In this paper we present a project which develops a QA system for Romanian. The challenges we face and decisions we have to make are discussed. 1 Introduction Question answering QA emerged in the late 90s as a result of the Text Retrieval Conferences TREC . These conferences are designed to evaluate the state-of-the-art in text retrieval and allow the participants to evaluate their systems in a consistent way by providing them a common test set. Starting with TREC-8 in 1999 these conferences contain a question answering track in which the participants try to find the answer to questions in a large collection of texts. As a result of the TREC the QA field witnessed rapid development for English but there are only few systems which work for languages other than English Kim and Seo 2002 Vetulani 2002 . Another factor which slows down the development of QA systems for other languages than English is the lack of the modules which are normally used in a QA system. In this paper we discuss the challenges we have to face during the development of a question answering system for Romanian language. This paper is structured as follows In Section 2 we present the structure of our QA system. The problems which need to be tackled when it is implemented for Romanian are presented in Section 3. A discussion of the project is presented in Section 4 the article .