METHOD AND APPARATUS FOR EXTRACTING CORRECT ANSWER IN QUESTION ANSWERING SYSTEM

摘要

A method and a device for extracting a correct answer in a Q/A(question/answer) system are provided to improve performance of the Q/A system by constructing various heterogeneous distributed information sources and extracting the desired answer from the information source storing the most suitable answer to the information need of the user through various correct answer extracting techniques. A language analyzer(130) linguistically analyzes a sentence of a target document(110) or a question sentence(120) of the user. A heterogeneous correct answer indexer(150) constructs the heterogeneous distributed information sources(140) by indexing the correct answer through various correct answer indexing techniques according to the sentence of the target document or the question sentence of the user. A multi-correct answer extractor(160) extracts the most suitable candidate answers to the information need of the user from the information sources through the correct answer extracting techniques. A correct answer manager(170) infers the extracted candidate answers according to the information need of the user, and integrates and presents the correct answers to the user.