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Signed Directed Graph (SDG) model of hot nitric acid cooling system is constructed by using process experience method and system process, and the fault diagnosis rules are reasoned out by the reverse reasoning. The three states of nodes in SDG model are extended to seven states of nodes, which consider node deviating. Granular Computing (GrC) is introduced into SDG-based fault diagnosis, the redundant...
The hierarchical fault diagnosis based on granular matrix and Signed Directed Graph (SDG) is presented in the paper. Granular Computing (GrC) theory can be introduced into SDG-based fault diagnosis to optimize the decision table. The rules of fault diagnosis are reasoned out through searching the associated path of the SDG model. The redundant nodes of the failure diagnosis rules are reduced by the...
In this paper, we explore an application of fuzzy similar relation (FSR) to variable precision rough set (VPRS) model for fuzzy multi-objective linear programming (FMOLP) in service provider (SP) selection of mobile operators. First, we describe the problem of FMOLP for SP selection, where the attribute value of SPs is transformed into a relative membership. Next, we define an FSR, based on which...
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