| 自动控制区分度作用的选题策略研究 |
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| 引用本文： | 李萍,甘登文,丁树良. 自动控制区分度作用的选题策略研究[J]. 江西师范大学学报(自然科学版), 2013, 0(1): 101-105 |
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| 作者姓名： | 李萍 甘登文 丁树良 |
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| 作者单位： | 江西师范大学计算机信息工程学院,江西南昌,330022 |
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| 基金项目： | 国家自然科学基金(30860084,31160203,31100756)资助项目 |
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| 摘 要： | 沿用引入曝光控制因子的CAT选题策略中所提出的曝光控制因子,同时将定长测验的测验长度以及不定长测验中被试累积信息量加入到新选题策略中,提出了在不分层的条件下自动控制区分度作用的选题策略.蒙特卡洛模拟结果表明:新方法在项目调用均匀性、测验效率等评价指标上效果均较为理想.
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| 关 键 词： | 项目曝光控制 选题策略 计算机化自适应测验 |
The Study of Item Selection Strategy-Automatic Control for the Role of Discrimination Index |
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| LI Ping,GAN Deng-wen,DING Shu-liang. The Study of Item Selection Strategy-Automatic Control for the Role of Discrimination Index[J]. Journal of Jiangxi Normal University (Natural Sciences Edition), 2013, 0(1): 101-105 |
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| Authors: | LI Ping GAN Deng-wen DING Shu-liang |
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| Affiliation: | (Institute of Computer Information and Engineering,Jiangxi Normal University,Nanchang Jiangxi 330022,China) |
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| Abstract: | Combining the exposure control factor proposed by Cheng Xiao-yang with the ratio of the test length administered for fixed tests or the ratio of the test information administered for variable length tests to construct a new item selection strategy,and the new strategy can control the role of discrimination index automatically without stratification of the item pool during the course of computerized adaptive testing.The results of Monte Carlo simulations show that the new approach is more ideal in the performance of item exposure control and test efficiency and other indexes. |
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| Keywords: | item exposure-control factor item selection strategy computerized adaptive testing |
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