In order to study incremental attribute reduction in neighborhood information system
an incremental attribute reduction algorithm of neighborhood information system is constructed by using neighborhood knowledge granularity. Firstly
the knowledge granularity of information system is extended in the neighborhood information system
and the neighborhood knowledge granularity is proposed. Secondly
the incremental updating mechanism of neighborhood knowledge granularity is studied for the case of attribute increase. Finally
the corresponding incremental attribute reduction algorithm is designed based on this mechanism. Experimental results show that the incremental algorithm has high dynamic attribute reduction performance.
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