The Research And Application Of Question Bank Management System Based On Online Education

This subject comes from the Long-distance Education College of Beijing Institute and Technology.This paper combines the characteristics of network and long-distance education,according to the numeral study standard,and makes use of the J2 EE structure of three layers development mode and frame of Struts.And it designs to develop a management system of network item bank,which carries out standar management towards questions,test papers,and the intelligent examination.Difficulty coefficient is one of the most important parameter in item bank.According to the latent trait theory and dipartite degree,this paper presents the method of the foundation and realization of the mathematics model for difficulty coefficient,and difficulty coefficient can be modified continuously in application.This paper also gives a kind of assessment index system of the difficulty of the examination question,and discusses the control method of difficulty of examination questions.This method have offered theoretical basis for the intelligent control of the difficulty of test paper.Finally,aiming at the characteristic of the long rang students who master knowledge raggedly and would shrivel up facing huge amounts of knowledge points,it is presented that a self-study and adaptive adjusting algorithm of exam-question difficulty coefficient on the basis of Bernoulli theorem large number law.