项目名称: 基于三层分级框架的地理本体映射方法研究
项目编号: No.41301435
项目类型: 青年科学基金项目
立项/批准年度: 2014
项目学科: 天文学、地球科学
项目作者: 胡承芳
作者单位: 长江水利委员会长江科学院
项目金额: 25万元
中文摘要: 基于知识的共享是未来信息领域发展的必然趋势,"地理信息体"之间无障碍的资源互通将极大拓展空间信息资源的应用深度,但是机构之间的语义异构已经成为妨碍共享进程的重要瓶颈,本体映射技术是解决这一困难的有效途径。常规通用本体映射方法没有考虑地理本体特有的时空关系特征,映射准确率有待提高。本项目从地理时空特征视角出发,对当前已有的方法加以综合和改进,提出了基于三层分级处理的本体映射模型框架,分别运用概念相似度分类方法、背景知识优化技术、图论二分图最佳匹配方法针对三层结点的不同特点设计映射策略,探索最优映射匹配机制。项目以国家基础地理信息本体与水利地理信息本体映射为例,通过试验验证上述理论和框架的可行性及各项精度参数。本课题所研究的语义转换机制有利于本体映射自动化,成果为地理信息体之间的语义共享提供了新方法,有助于地理自然语言搜索研究,拓宽地理认知影响范围,最终为地理空间知识层面共享服务。
中文关键词: 地理本体;本体映射;相似度计算;;
英文摘要: The effective interoperability within geographic communities is the major development trend in the future geospatial field, however, semantic heterogeneity make it difficult in information sharing, Ontology mapping technology is an effective way to resolve this obstacle. Using conventional ontology mapping method can only reach a limited geographical ontology mapping effect. This project based on the perspective of the geographical space-time features classification, integrate and improve the current existing ontology mapping methods, propose the framework based on three-tier classification. This project use the different method aiming at different characteristics of the three-node mapping method. The methods are: the concept of similarity classification method, the background knowledge of optimization technique, graph theory of bipartite graph best match. Using the above ways, The project design to explore the optimal mapping matching mechanism. Testing example is the ontology mapping between the national fundamental geographic information ontology and water geographical information ontology, through testing to verify the feasibility and effect of the above-mentioned theories and frameworks. The research will extend the semantics sharing of geographic information between the various fields and facilitate the a
英文关键词: Geographic ontology;Ontology mapping;Similarity calculation;;