| At present, our country is in the important period of strategic opportunities. For security environment is becoming increasingly complex and national security threats are more diverse. Along with the social advancement based on the economy globalism, informational and value pluralizing, confidential task is more and more arduous, and the difficulty of security management also increases further, the cultivation of professionals is becoming more and more important. However, the secrecy education training examination is still mainly traditional, and the secrecy examination of higher education also is in the exploration.Computer adaptive testing is a product of the fully integrated of modern educational and psychological measurement theory and computer technology. With the rapid development of computer technology and Internet technology, it has gained more and more attention and application. At present, there still exist a series of problems of various aspects of computer adaptive testing in setting initial conditions, capacity estimation, selection strategy and the stopping rule. Although many domestic and foreign scholars have conducted a lot of research on these problems, and puts forward some solving methods, but these methods are mostly stay in the simulation research stage, and are independent of each other, did not effectively combined to solve the practical problems.Aiming at these problems, this paper first has carried on the analysis to the related theory and technology, focuses on the basic principle of IRT model, processes and basic elements of computer adaptive testing system, and the realization of the UML modeling technology, MVC technology and J2EE technology in architecture. And then in this paper carries on the thorough analysis of the design of question database, setting initial conditions, capacity estimation, the strategy of selecting method and the termination rules. By comparing the existing solutions, this paper puts forward the key technology for secure knowledge test system.This article first has carried on the demand analysis, the system flow analysis and UML modeling. At last, this paper uses J2EE technology, three-tier MVC design pattern and B/S structure to achieve a CAT system which is based on IRT theory. |
