Reserch And Implementation Of The Online Question-answer System On The Cimputer Course

With the rapid development of computer network technology,the traditional teaching methods can not meet the demand of large amount of information.The modern teaching practice reform of education needs the support of new science and technology,and the development of modern network teaching has injected new vitality to the teaching of computer,because,in the network teaching environment,teachers can only in limited time and space to provide students with the "QA",the time and space limitations that the students in the"discovery the accumulation of knowledge and solve problems," such a closed-loop learning process appeared disjointed,seriously affected the enthusiasm of students learning,learning initiative and the emergence of network greatly reduced,intelligent answering system makes this problem is effectively solved.On the basis of the existing campus network environment platform,this paper puts forward the design scheme of the online question answering system based on the computer natural language understanding.System using Studio Visual 2005 development platform,based on the framework of the.Net,the database program selection Server SQL 2000,built a browser/Server three layer network model.This paper focuses on the automatic question answering system based on natural language understanding,and designs a full text retrieval and semantic similarity to deal with two automatic question answering patterns.The technical support is the use of Pangu word components mature complete Chinese word processing,text retrieval module realizes full-text retrieval module using Lucene,based on the existing distance based on semantic similarity algorithm,weighted processing of semantic dictionary path,and the improved semantic similarity processing algorithms have been successfully applied to the automatic answering module.As a complement to the answer,the system also designed a pair of one manual and comprehensive discussion of the question and answer module to ensure that in the case of automatic failure to achieve non synchronous way under the manual.In the process of system design,according to the system function has made the detailed demand analysis,the main frame of the system,the design of the database,according to the character of different design of the administrators,teachers and students and four anonymous user interactive interface,integration of the various functional modules of the system to complete the.From the actual operating results,the system has some advantages in accuracy and recall,has a certain practicality.