The judgment method of valid item and its application

Yang Shuqun Yang Shuqun,Yao Zhigiang Yao Zhigiang,Cai Shengzhen Cai Shengzhen,Ding Shuliang Ding Shuliang

doi:10.1109/ccdc.2008.4598065

The judgment method of valid item and its application

Yang Shuqun Yang Shuqun, Yao Zhigiang Yao Zhigiang + Show 2 more

https://doi.org/10.1109/ccdc.2008.4598065

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Publication Date: Jul 1, 2008

Citations: 1

Affiliation: Nanjing University of Aeronautics and Astronautics, Fujian Normal University, Jiangxi Normal University

#Attribute Hierarchy Method #Rule Space Model + Show 8 more

Abstract
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Abstract

Rule space model (RSM) and attribute hierarchy method (AHM) have been research focuses in cognitive diagnosis. Reduced Q-matrix (incidence matrix between attributes and items), which named Qr matrix, plays an important role in RSM and AHM. The column vector of Qr matrix should satisfy an attribute hierarchy, and the vector is called valid item. Studying attribute hierarchy, the judgment method of valid item is proposed. The method is applied to RSM and AHM, and empirical evidence showed that it performed very well.

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