一种基于本体的地理实体语义模型设计方法

An ontology-based approach to design geograhic entity semantic model

以新型基础测绘为背景,针对实景三维(3D)时空数据生产存储过程中现有时空数据模型缺乏对包含几何、语义和状态等的地理实体数据支持的问题,本文提出了一种基于本体的地理实体语义模型设计方法,首先构建面向地理实体领域本体的数据概念模型,然后利用一种新型的地理信息数据模型——语义实体模型(SEM),将本体概念实例化。以自然实体中山体为例,构建山体实体概念模型,以SEM数据模型进行山体实体本体表示,将实例结果导入地理实体数据库,验证结果表明SEM数据模型可实现多模态地理实体数据的一体化存储,并兼顾了地理空间数据的几何、语义等特征。SEM模型提供了一种新型地理信息数据组织方式,解决了传统基础测绘数据割裂的问题,可实现异源异构数据融合和数据的联动更新。

Based on new fundamental surveying and mapping,this paper proposed an ontology-based geographic entity semantic model design method aiming at the lack of support for the existing spatio-temporal data models for geographic entity data including geometry,semantics and states in the production and storage process of three-dimensional(3D)real scenes spatio-temporal data.Firstly,a data conceptual model for the domain of geographic entities is constructed,and then a new geographic information data model-semantic entity model(SEM)to instantiate the ontology concept.Taking the mountain in the natural entity as an example,the conceptual model of the mountain entity is constructed.The SEM data model is employed to represent the mountain entity ontology,and the instance results are imported into the geographic entity database.The verification results show that the SEM data model can realize the integrated storage of multi-modal geographic entity data,and take into account the geometry,semantics,and other characteristics of geospatial data.The SEM model provides a new type of geographic information data organization method,which solves the problem of fragmentation of traditional fundamental surveying and mapping data and can achieve heterogeneous data fusion and data linkage update.