[1]李佳,丁树良.多种分层方法在CAT校准误差中的应用研究[J].江西师范大学学报(自然科学版),2016,40(01):56-60.
　LI Jia,DING Shuliang.The Several Stratified Methods of CAT in the Presence of Calibration Error[J].Journal of Jiangxi Normal University:Natural Science Edition,2016,40(01):56-60.
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多种分层方法在CAT校准误差中的应用研究()
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《江西师范大学学报》（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
40
期数:
2016年01期
页码:
56-60
栏目:
出版日期:
2016-01-25

文章信息/Info

Title:
The Several Stratified Methods of CAT in the Presence of Calibration Error
作者:
李佳;丁树良
江西师范大学计算机信息工程学院,江西 南昌 330022
Author(s):
LI Jia; DING Shuliang
College of Computer Information Engineering,Jiangxi Normal University,Nanchang Jiangxi 330022,China
关键词:
分层方法;  曝光因子;  题库利用率;  机会红利
Keywords:
stratified item select method;  exposure control factor;  bank utilization;  capitalization on chance
分类号:
B 841
文献标志码:
A
摘要:
若研究或使用CAT时将项目参数的估计值认为是真实值,则会产生所谓的机会红利(capitalization on chance),国内尚未报道该方面的研究.在定长和不定长CAT测验中考察引入曝光因子的多种分层化选题策略和随机选题策略,综合比较它们在测验精度、题库利用率和机会红利等评价指标中的表现,发现引入曝光因子的2种动态分层方法有更好的表现.
Abstract:
Previous studies of CAT have treated item parameter estimates as if they are the true population parameter values,but capitalization on chance may occur.In this article,it is examined that the performance of several stratified methods under more realistic conditions where item parameter estimates instead of true parameter values are used in the CAT.To improve the bank utilization and reduce the captalization on chance,Monte Carlo simulations manipulated some key factors based on 3-parameter Logistic model:fixed or variable test,stratified item pool methods,use or not use of the exposure control factor.The results showed that the two dynamical stratified methods in conjunction with exposure control factor are better.

参考文献/References:

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备注/Memo

备注/Memo:
基金项目:国家自然科学基金(31500909,31360237,31300876,31160203,31100756,30860084,11401271),教育部人文社会科学研究青年基金(13YJC880060)和江西省教育科学2013年度一般课题(13YB032)资助项目.
更新日期/Last Update: 1900-01-01