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- W2371523766 abstract "The disadvantages of the current conditional information entropy are analyzed. A new conditional information entropy is proposed. Based on this entropy the new significance of an attribute is defined and compared with two significances of this attribute based on the positive region and the current conditional information entropy respectively. The result shows that when used as heuristic information, the proposed significance of the attribute is better than the other two. Finally, a heuristic algorithm for knowledge reduction is designed and an efficient algorithm for computing conditional information entropy is proposed. Theoretical analysis and experimental results show that time complexity of this reduction algorithm is less than that of the algorithm based on the current conditional information entropy. Also, this reduction algorithm is more capable of finding the minimal or optimal reducts." @default.
- W2371523766 created "2016-06-24" @default.
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- W2371523766 date "2005-01-01" @default.
- W2371523766 modified "2023-09-24" @default.
- W2371523766 title "An Efficient Knowledge Reduction Algorithm Based on New Conditional Information Entropy" @default.
- W2371523766 hasPublicationYear "2005" @default.
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