机助自适应考试(CAT)系统题库的仿真研究

该文用模拟的方法讨论了机助自适应考试系统中题库的容量、知识点分布和题目参数的分布。容量模拟试图在题库的规模和实用性上作一个折中，使得测试能够正确地完成而题库的量尽量的少，因为建立题库的花费非常的大；知识点分布模拟和题目参数的分布模拟，希望找出能够让自适应算法发挥最大优势的知识点分布状况和题目参数分布状况。基于实验结果，对当前的HSK（汉语水平考试）考试系统的题库的扩充方法进行了研究，并且建立信息管理模块对题库参数进行优化。

Simulation Research on the Item Pool System for CAT

Simulation method is used to find how many items are suited to the item pool for our HSK system. The distribution of knowledge and parameters of items are also studied. The purpose of simulation for capacity is to find the minimum items suited to the adaptive algorithm, because it will take great money and energy to set up item pool. The aim of the study on distribution of knowledge and parameters of items is to find the suitable distributing of them. Based on the results, we improve the item pool system for our HSK system.