一种顾及语义的时空数据定位搜索引擎

Location Search Engine for Spatio-temporal Data with Semantic

通过分析时空数据特征以及在定位搜索中的表达形式,利用事件本体模型建立了时空数据对象模型,能对时空数据的时间、空间、事件等特性和关系进行表达;并实现了对应的数据库、数据索引的建设。通过对时空数据一体化的结构设计,可较好地统一点、线、面各类时空数据,并建立统一的索引文件。测试表明,该方法查询效率较好,是对传统定位搜索的一种有效扩展。

By analyzing the data characteristics of spatio-temporal data and the expression form in location search,we established a spatio-temporal data object model based on event ontology model which expressed the temporal,spatial and event characteristics and relationships of spatio-temporal data in this paper.Based on this model,we built the database and data index.By integrating the spatiotemporal data structure,this method can better integrate all kinds of spatiotemporal data,such as point,line and surface,and establish a unified index file.The test shows that the query efficiency is good,and is an effective extension for the traditional location search.