Abstract:
A natural language question answering system and method, and a paraphrase module are provided. The natural language question answering system includes a conversion module configured to generate a plurality of modified questions by paraphrasing a user's question; a plurality of question answering engines configured to receive each of the user's question and the modified questions, and select candidate answers corresponding to each of the user's question and the modified questions; and a detection module configured to detect at least one among the selected candidate answers as an answer.
Abstract:
Provided are a system and method for answering a natural language question which show improved information retrieval performance. The system includes an index unit configured to analyze text of previously stored irregular documents and classify and index the irregular documents according to meanings of sentences or paragraphs, a database configured to receive and store the irregular documents indexed according to the meanings and transmitted from the index unit, a retrieval unit configured to extract an index word by semantically analyzing an input question and search the database for documents related to the extracted index word, and a provision unit configured to generate a correct answer to the question by analyzing the documents searched by the retrieval unit and provide the search results and the correct answer.
Abstract:
Provided are an opinion analyzing system and method that analyze an opinion change based on an elapse of time and provide an analysis result. The opinion analyzing system includes a user terminal configured to transmit an opinion analysis request signal including an opinion analysis target keyword and analysis target period information, and an opinion analyzing server configured to, when the opinion analysis request signal is received from the user terminal, collect text information including the opinion analysis target keyword from a database according to the opinion analysis request signal, and analyze the collected text information to generate a summary text of an opinion.