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A quick attribute reduction algorithm based on knowledge granularity

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4 Author(s)
Xu Zhang-yan ; Coll. of Comput. Sci. & Inf. Technol., Guangxi Normal Univ., Guilin, China ; Zhang Wei ; Wang Xiao-yu ; Li Xiao-yu

The research of knowledge granularity has been a hotspot at home and abroad. In incomplete information systems of the rough set, we give a formula, which calculates the attribute frequency directly without acquiring the discernibility matrix. Then applying it to the field of knowledge granularity, we give a quick calculation of the attribute reduction algorithm, which of the time complexity is O(|C|2|U|) in the worst case. The example result shows that the algorithm is correct and efficient.

Published in:

Fuzzy Systems and Knowledge Discovery (FSKD), 2012 9th International Conference on

Date of Conference:

29-31 May 2012