Modified heuristic algorithm of attribute reduction in rough set

被引:0
|
作者
Shi, Feng [1 ]
Lou, Zhen-Liang [1 ]
Zhang, Yong-Qing [1 ]
机构
[1] Mold CAD Eng. Res. Cent., Shanghai Jiaotong Univ., Shanghai 200030, China
关键词
Algorithms - Database systems - Heuristic methods;
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中图分类号
学科分类号
摘要
A modified heuristic algorithm of attribute reduction was presented. The construction of heuristic information was discussed and the incompleteness of the two existing definitions of attribute significance was proved by two counter examples. A modified definition of the attribute significance based on the weighed sum was proposed. On the basis of the definition, two heuristic algorithms were constructed. Finally, the validity and feasibility of the algorithms were demonstrated by several classical databases in the UCI repository.
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页码:478 / 481
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