问答式移动空间信息服务中的本体实例搜索

Geo-ontology instances search for QA-based mobile spatial information service

从地理本体入手，构造了空间语义角色和实例模式，通过空间语义角色标注、短语识别以及模式匹配等手段，从Web中提取出与空间位置相关的本体实例，为问答式移动空间信息服务提供了可动态更新且具有明确语义的数据源，并利用语义Web技术，为移动用户提供问答式本体实例查询服务。初步实验表明，该方法具有较好的准确率，召回率有待进一步提高。

Based on the technology of common Search Engine, this paper defined several spatial semantic roles and instance expression patterns according to geographic ontology, and searched large quantities of geo-ontology instances by means of spatial semantic annotation, semantic phrases recognition and pattern match. It also provided QA-based instance service for mobile user with the help of Semantic Web technology. The primarcy experiment shows a good pricision and an ordinany recall.