Similarity, Based On The Limited Field Of Questions

Question Answering System provides the human-machine interface by means of natural language .Comparing to the traditional search engine which is based on the keyword , Question Answering System has prominent advantages. In the restricted domain, Question Answering System on the question library is more accurate, simply and efficiency at localization to the question-answer, in each domain of daily life, it is the key problem of present research and will be a brilliant application in the future. This paper dose a series of research which resolve method of a knowledge base constructed in the domain, method of question-answer retrieval, the collection and organization of question library in the restricted domain, question classification in the implement process of Question Answering System based on billiards domain. The main works in this paper are as follows:Firstly, analysed the existing methods of Chinese word segmentation and according to the traits of restricted domain, selected the appropriate method of Chinese word segmentation and also design it.Secondly, studied the method of computing semantic similarity between Chinese words and the Chinese question sentence patterns in detail, this studies laid a solid foundation for the development of the Question Answering System.Thirdly, has conducted the thorough research to Chinese sentence similarity computation, has contrasted the existing quite mature interrogative sentence similarity algorithm good and bad points, and aims at the definition domain the characteristic, proposed one kind in view of the ping-pong domain's interrogative sentence similarity computational method, and applies it face in the ping-pong domain automatic interrogator-responder system.Fourthly, designed and has realized face the ping-pong domain automatic interrogator-responder system. Has constructed the domain knowledge library and the domain question storehouse, uses based on key word reverse index interrogative sentence similarity computational method which this article proposed, carries on the interrogative sentence similarity the computation, realizes system' s automatic question and answer. Had indicated face the ping-pong domain's automatic interrogator-responder system' s test result this method is feasible, has the quite good practical effect.