Title :
The judgment method of valid item and its application
Author :
Shuqun, Yang ; Cai Shengzhen ; Yao Zhigiang ; Shuliang, Ding
Author_Institution :
Fac. of Software, Fujian Normal Univ., Fuzhou
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.
Keywords :
cognitive systems; matrix algebra; attribute hierarchy method; cognitive diagnosis; empirical evidence; incidence matrix; judgment method; reduced Q-matrix; rule space model; Incremental Augment Algorithm; Linear Regression; Reduced Q matrix; Valid items;
Conference_Titel :
Control and Decision Conference, 2008. CCDC 2008. Chinese
Conference_Location :
Yantai, Shandong
Print_ISBN :
978-1-4244-1733-9
Electronic_ISBN :
978-1-4244-1734-6
DOI :
10.1109/CCDC.2008.4598065
