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The paper uses ontology method to describe complex interdependency in urban Critical Infrastructure System (CIS). Through the literature review, existing research results have not been excavated the essential causes and influencing factors of the urban CIS interdependency formation. Because the complex network interdependencies in the urban CIS has deep connotation, and the complexity increases with the urban CIS scale. In the research of urban CIS interdependency, attributes such as interdependent nodes and interdependent edges should be taken seriously also, and the data and information contained in them should be refined. The ontology theory can meet above requirements. The paper establishes an interdependency ontology model to generally express the urban CIS interdependency. Keywords—ontology; CIS; interdependency; top-level ontology; application ontology

Research on Ontology Model of the Urban Critical Infrastructure System Interdependence