基于GIS的铁路选线智能环境及领域本体建模方法

提出基于GIS的铁路选线智能环境(GBRLIE)的智能选线综合解决方案。铁路选线智能环境的既有研究,以及GIS技术、人工智能技术和其他计算机技术的发展为解决方案的研究奠定了基础。在GBRLIE的知识表达上,本体提供了信息共享、互操作的中间件,可保证知识系统从概念分析到系统建立的概念一致性,能保持数据和知识的语义统一。本体位于GBRLIE的逻辑表示层,包括领域本体、方法本体和应用本体。领域本体是对研究领域可共享和重用静态知识的描述,采用UML和面向对象技术进行表示,可克服专用本体描述语言和表示方法的不足。领域本体的形式化描述把关系和规则当作概念处理,用UML表示本体、概念、关系、规则、约束、公理。应用提出的领域本体表示方法描述了铁路选线几何构成本体,列出选线设计中的部分规则及约束。

GIS Based Railway Location Intelligent Environment and Domain Ontology Modeling Method

GIS based railway location intelligent environment(GBRLIE)is proposed as a systematic solution to intelligent railway location.Studies conducted concerning railway location intelligent environment and the development of GIS,artificial intelligence and other computer technologies have laid good foundation for it.Because ontology provides intermediates for information sharing and interoperability,it can keep conceptual consistency in knowledge-based system from concept analyzing to system constructing,maintain semantic uniformity between data and knowledge.Ontology lies on the logic representation layer of GBRLIE and comprises domain ontology,method ontology and application ontology.Domain ontology models reusable sharing static knowledge in concerned domains.A method based on UML and object-oriented technology is put forward to represent it,which can overcome some shortcomings with knowledge engineering specific methods and languages.The essence of the method is to consider relation and rule as special concept and it can be used to model ontology,concept,relation,rule,constraint and axiom.The domain ontology representation method is used to model railway location geometric alignment ontology with some rules and constraints concerning railway alignment design.