| 子题库题量不平衡的按a分层选题策略 |
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| 引用本文： | 程小扬,丁树良. 子题库题量不平衡的按a分层选题策略[J]. 江西师范大学学报(自然科学版), 2011, 35(1): 5-9 |
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| 作者姓名： | 程小扬 丁树良 |
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| 作者单位： | 1. 江西师范大学计算机信息工程学院,江西,南昌,330027;赣南师范学院数学与计算机科学学院,江西,赣州,34100
2. 江西师范大学计算机信息工程学院,江西,南昌,330027 |
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| 基金项目： | 国家自然科学基金,江西省教育厅青年科学基金 |
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| 摘 要： | 讨论了子题库中题量的配置是否是最优的问题,分别将子题库划分成项目数相等和不相等的情况进行比较.通过计算机模拟实验显示,当各子题库的项目数量逐层减少时,测验效率与项目曝光率指标都较理想.
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| 关 键 词： | 计算机化自适应测验 按a分层 子题库划分 3参数逻辑斯蒂克模型 |
A-Stratified Item Selection Criteria on Unbalanced Quantities of the Items in Sub-Item Pools |
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| CHENG Xiao-yang,DING Shu-liang. A-Stratified Item Selection Criteria on Unbalanced Quantities of the Items in Sub-Item Pools[J]. Journal of Jiangxi Normal University (Natural Sciences Edition), 2011, 35(1): 5-9 |
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| Authors: | CHENG Xiao-yang DING Shu-liang |
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| Affiliation: | CHENG Xiao-yang1,2,DING Shu-liang1(1.Computer of Information Engineering,Jiangxi Normal University,Nanchang Jiangxi 330027,China,2.College of Mathematics and Computer Science,Gannan Normal University,Ganzhou Jiangxi 34100,China) |
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| Abstract: | The optimization question on the quantity of the items in the sub-item pool is discussed.The computer simula-tion shows both the test efficiency and item exposure rate are relatively ideal while the number of items in the sub-item bank is reduced layer by layer. |
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| Keywords: | computerized adaptive testing a-stratification sub-item pool division 3PLM |
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