Research On High-speed Railway Ontology Integration And Reasoning Based On Semantic Relationships

As a modeling tool able to describes the domain concept in the semantic and knowledge level, the essential objective of ontology is knowledge sharing and reusing. Ontology integration is to make sharing and exchanging between different bodies, often applied to the ontology heterogeneity, which is different ontology constructs carry on different semantic division to the identical domain ontology concepts in their constructions. The high-speed railway area is composed of several different fields, such as operation management, signal and communication, traction power supply, infrastructure, emu, passenger service and so on, and the normal integration approach is not applicable.In order to integrate multiple major domains, this article takes the high-speed railway area as study and apply object, analyzes composition of technical systems and withdraws three integrated relation classification-material, energy and information, on that basis, establishes relationships between the various sub-areas.Secondly, in accordance with the organization of ontology, this article proposes a view-based integration method based on single and multiple approach of ontology information integration, and then builds an integrated view of high-speed railway, which combines the emu ontology and traction power supply ontology.Ultimately, the article designs a multi-storage schema combined the method of owl storage on the basis of document and relational databases, applies the ontology in the knowledge service platform that integrated document library and specific database, and then realizes intelligent search of high-speed railway knowledge, providing users with a more comprehensive and efficient service by semantic expand retrieval in five ways.The ontology integration method on high-speed railway area can be used in other similar technical areas which consist of several major fields; it has reference significance to the research towards the integration of information resources and information services composition.