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Identifying the best network structure from a myriad of candidates is not an easy task, and we propose a supervised learning method for this task. We test the idea with an instance of learning student models from students’ responses to test items, because student models are very important for...
IRT-based models with a general ability and several specific ability dimensions are useful. Studies have looked at item response models where the general and specific ability dimensions form a hierarchical structure. It is also possible that the general and specific abilities directly underlie...
Stratified versions of coefficients for reliability are defined as extensions of the unstratified coefficients given by Guttman and Cronbach: Lambda 3 (Alpha), Lambda 2 and Lambda 6. One of the stratified coefficients is already available as stratified alpha. Among the four stratified...
For square contingency tables, Tomizawa (1994), Tomizawa, Seo and Yamamoto (1998) and Tomizawa, Miyamoto and Hatanaka (2001) considered the power-divergence-type measures to represent the degree of departure from symmetry. These measures lie between 0 and 1, and have a characteristic that the...
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