定位服务中的语义位置研究

Research on Semantic Location in Positioning Services

位置既是定位服务的最终成果,又是位置服务的前提和基础,从语义的角度挖掘位置内在信息具有重要意义。从定位服务的角度出发,首先将定位服务的输出抽象为物理位置和地理位置,扩展了语义位置概念,通过将位置属性和规则纳入到语义位置中来,建立了语义位置信息模型。然后从位置概念的内涵与外延进行语义挖掘,借助本体实现了语义位置的形式化描述,使其能够被计算机系统所理解。最后讨论了定位服务的信息流程,建立了领域位置本体,实现了位置本体服务,从而为智能化的自适应位置服务提供了非常有价值的基础信息。

As the product of positioning services,location is the most essential information of location-based services.Mining location semantics can provide much valuable information to application services.In the positioning services views,the output of mobile positioning system is classified as physical location and geographic location.An improved comprehensive semantic location is defined with relationships among locations,location properties and rules.Based on hierarchical partition of space domain,a semantic oriented location information model is brought out.In order to make machine system can understand it,semantic location is formally described and location domain ontology is constructed by mining information from the meaning and extension of core noun in location name.At last,location information processing flow is discussed in positioning services system.The campus domain location ontology is built and it provides location ontology service,which is very valuable of adaptive intelligent location-based services.