交通信息具有空间性、时间性、多维性等特点,如何对交通知识进行表达决定了上层应用系统的成败.建立针对普通用户的交通知识库,利用本体通过类、属性、实例、分类法等表达结构知识、支持知识自动分类和实例识别的特点,对交通领域涉及的诸多概念及其关系进行定义,借助OWL等工具对其形式化表达,并在交通知识查询系统中进行简单应用.试验证明,该交通知识库能弥补非GIS用户对空间知识的欠缺,增强交通知识查询服务的易用性和改善用户体验.
Traffic has relations with space and time,and its information is multidimensional.How to express traffic knowledge determines the success of the application system of an upper layer.With the Advantages of ontology to express knowledge,to classify and to identify instances,a traffic knowledge base was established for ordinary users.In the ontology,the concepts and their relationships involved in traffic were defined and formalized with OWL.The knowledge base was used in a traffic knowledge query system for example.Experiments show that the traffic knowledge base was able to compensate for the lack of special spatial knowledge for non-GIS users,enhanced usability for traffic query service and improved the user experience.