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Empirical Mode Decomposition(EMD) is an advanced method for analyzing non-stationary signal, but there is an involved end issue in the course of getting two envelops of the data using spline interpolation. In this paper a novel method based on grey prediction model is proposed to restrain the end effect of empirical mode decomposition. In the grey prediction endpoint extension process, based on the...
Semantic integration is a key technology of heterogeneous database interoperation at present. This article proposes a method of building heterogeneous database integration framework which is fairly complete and based on ontology by the advantage of ontology semantic integration. The article puts forward semantic mapping approach based on semantic similarity of the concept name, property type and instance...
The characteristics of complex equipment maintenance is analyzed. Then maintenance information resources and the demands of complex equipment intelligent maintenance are also analyzed. On this basis of the analysis, it designs equipment intelligent maintenance system based on CBR hybrid intelligent system, and analyzes the system's three tiers structures, which are data tier, service logic tier and...
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