| 词汇测验中猜测行为的探查——贝叶斯猜测系列模型的应用与思考 |
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| 引用本文： | 谭艳姬,曹亦薇.词汇测验中猜测行为的探查——贝叶斯猜测系列模型的应用与思考[J].考试研究,2012(5):19-28. |
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| 作者姓名： | 谭艳姬 曹亦薇 |
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| 作者单位： | 腾讯科技(深圳)有限公司用户研究与体验设计部;深圳大学 |
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| 摘 要： | 本研究应用Caojing等人的Bayesian IRT Guessing系列模型,分析初中二年级学生在汉语词汇测验中的猜测行为,使用DIC3指标评价模型的拟合程度,并将参数估计结果与双参数Logistic模型进行了比较。研究发现：（1）猜测模型的拟合度优于双参数Logistic模型;（2）初中二年级测验数据最适合临界猜测模型（IRT-TG）,约有3.5%的学生存在TG型猜测行为;（3）猜测者的存在会明显影响本身的能力估计与项目难度估计,但是对非猜测者的能力及区分度参数估计影响不大。
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| 关 键 词： | 汉语词汇测验 贝叶斯猜测系列模型 MCMC DIC3 |
Detection of Testees’ Guessing Behaviors in Chinese Vocabulary Test:Application of Bayesian IRT Guess Models |
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| Tan Yanji,Cao Yiwei.Detection of Testees’ Guessing Behaviors in Chinese Vocabulary Test:Application of Bayesian IRT Guess Models[J].Examinations Research,2012(5):19-28. |
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| Authors: | Tan Yanji Cao Yiwei |
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| Institution: | 1 Tencent Technology (Shenzhen) Company Limited,Shenzhen,Guangdong,518057 2 Shenzhen University,Shenzhen,Guangdong,518060 |
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| Abstract: | This study applied the Bayesian IRT guess models by Caojing to Chinese vocabulary test of grand 8,and compared them with the 2PL-IRT using Bayesian methodology.The results show that :(1) all guess models perform better than the 2PL model on the data set;(2) 3.5% students of grand 8are detected guessers,they answer questions based on their knowledge up to a certain test item,and guess randomly thereafter;(3) the guessers will significantly influence the estimation of their ability parameters and the item’s difficulty parameters,however it has little impact on non-guessers’ ability and item’s discrimination estimates. |
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| Keywords: | Chinese Vocabulary Test Bayesian IRT Guess Models MCMC DIC3 |
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