An improved spectral clustering algorithm is proposed to focus on the problem that the general clustering algorithms are invalid for reciprocating compressor fault data lying on complex manifold. A new affinity matrix is obtained. The geodesic distance replaces the traditional Euclidian distance to measure the similarity of data
and neighborhood-based density factor is used to identify and to remove noise points. Moreover
density-based local Euclidian distance adjustment is introduced into areas with small gap between manifolds. The proposed method is implemented on several artificial datasets and a real reciprocating compressor fault dataset. Experimental results show that the new algorithm can accomplish the clustering for data with noise and multi-scale character
especially when the manifolds have small gaps or crossover between each other. Its accuracy is 50.86% and 8.6% higher than those of k-means and MSCA respectively.
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references
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