A Novel Similarity Calculation Method Based on Chinese Sentence Keyword Weight

摘要

Question Answering system (QA), is a kind of new information retrieval system which can be queried with natural language and return knowledge directly.By improving the traditional Chinese sentence similarity model, this paper proposes a Chinese sentence similarity calculation method based on keywords weight.Its key question is that questions asked by user and questions in the Frequently Asked Question (FAQ) carry on similarity calculation, discover the closest question in the FAQ and return the question answer stored in advance. It can also automatically update and maintain FAQ.The experiment indicates that precision of question match can be improved compared with traditional sentence similarity model.