An Improving Technique of Adaptive Testing System Based on IRT

Adaptive testing is a form of intelligent computer test. The number and types of the exam questions are uncertain. How to design high reliability algorithms to reflect the real level of the candidates is the key problem, also it is the most difficult problem. The realizing algorithms of parameter set, iterative computation and answer information estimation are designed and improved in the paper. The adaptive testing theory, the testing system design idea, the function and the technique are also introduced by an actual system designation. By comparing with the conventional test, the effect of the adaptive testing system is analyzed and evaluated.