DocumentCode
2567099
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
fYear
2008
fDate
2-4 July 2008
Firstpage
3913
Lastpage
3916
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;
fLanguage
English
Publisher
ieee
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
Type
conf
DOI
10.1109/CCDC.2008.4598065
Filename
4598065
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