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- W1969386985 abstract "Item selection procedures designed for computerized adaptive testing need to accurately estimate every taker's trait level (θ) and, at the same time, effectively use all items in a bank. Empirical studies showed that classical item selection procedures based on maximizing Fisher or other related information yielded highly varied item exposure rates; with these procedures, some items were frequently used whereas others were rarely selected. In the literature, methods have been proposed for controlling exposure rates; they tend to affect the accuracy in θ estimates, however. A modified version of the maximum Fisher information (MFI) criterion, coined the nearest-neighbors (NN) criterion, is proposed in this study. The NN procedure improves to a moderate extent the undesirable item exposure rates associated with the MFI criterion and keeps sufficient precision in θ estimates. The NN criterion will be compared with a few other existing methods in an empirical study using the mean squared errors in θ estimates and plots of item exposure rates associated with different θ distributions. Index terms: computerized adaptive testing, density estimation, Fisher information, item exposure rates, item response theory, selection criteria, trait estimation." @default.
- W1969386985 created "2016-06-24" @default.
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- W1969386985 date "2003-05-01" @default.
- W1969386985 modified "2023-10-16" @default.
- W1969386985 title "Computerized Adaptive Testing Using the Nearest-Neighbors Criterion" @default.
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- W1969386985 doi "https://doi.org/10.1177/0146621603027003002" @default.
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