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To avoid the weakness of the Median Filter, a new algorithm is proposed in this paper. It works in this way: firstly, use fuzzy gradient values and fuzzy logic theory to detect impulse noise,then a noise label matrix is generated; secondly, scans the noise label matrix: if the pixel is a signal point, then its gray value is outputted directly,otherwise, the size of filtering window is adaptively adjusted...
This paper presents a new attribute significance measurement method based on the viewpoint of information theory of Fuzzy Rough Set. The method does not need to discretize continuous attributes included in cases, which can effectively reduce information loss, and it is suitable for the cases which contain both discrete and continuous attributes. Then it proposes a heuristic algorithm based on the...
For the incomplete data that usually exists in the process of pretreatment, this article presents an approach for treatment of the incomplete data based on WaveCluster and weighted 1-Nearest Neighbor (1-NN).The proposed method firstly carries out the WaveCluster in the complete record set of the whole set, which can reduce the volume of comparative data and rule out outliers, improve computational...
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