Extension of rough set model based on weighted connection degree in incomplete information systems

doi:10.3724/SP.J.1087.2005.0824

Journal of Computer Applications ›› 2005, Vol. 25 ›› Issue (04): 824-826.DOI: 10.3724/SP.J.1087.2005.0824

• Software and database • Previous Articles Next Articles

Extension of rough set model based on weighted connection degree in incomplete information systems

ZHAO Xiang¹,LIU Tong-ming¹,XIANG Yi-dan²

1.School of Electronics and Information,Jiangsu University of Science and Technology,Zhenjiang Jiangsu 212003,China; 2.School of Economics and Management,Jiangsu University of Science and Technology,Zhenjiang Jiangsu 212003,China

Online:2005-04-01 Published:2005-04-01

不完备信息系统中基于加权联系度的粗集模型拓展

赵翔¹，刘同明¹，向一丹²

1.江苏科技大学电子与信息学院； 2.江苏科技大学经济管理学院

基金资助:
国家自然科学基金资助项目(60310213);;江苏省自然科学基金资助项目(930134)

Abstract

Abstract:

Several known extended rough set models were analyzed, a model based on weighted connection degree was proposed. In this model,the importance of each attribute was estimated before farther extension of rough set model in the incomplete information system. Finally, the experiment result shows that the model has good coincidence with user’s subjective request and objective reality.

Key words: incomplete information system, rough set, connection degree, weighted connection degree, information entropy

摘要：

在评价几种已有的针对不完备信息系统的粗集拓展模型的基础上,提出了一种基于加权联系度的粗集拓展模型。在对各属性重要性排序的前提下,对不完备信息系统进行进一步的粗集模型拓展。通过实例说明该模型更符合人的主观要求和客观现实。

关键词: 不完备信息系统, 粗集, 联系度, 加权联系度, 信息熵

CLC Number:

TP311.13

ZHAO Xiang,LIU Tong-ming,XIANG Yi-dan. Extension of rough set model based on weighted connection degree in incomplete information systems[J]. Journal of Computer Applications, 2005, 25(04): 824-826.

赵翔，刘同明，向一丹. 不完备信息系统中基于加权联系度的粗集模型拓展[J]. 计算机应用, 2005, 25(04): 824-826.

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Extension of rough set model based on weighted connection degree in incomplete information systems

不完备信息系统中基于加权联系度的粗集模型拓展

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