DW中一种基于本体的语义集成方法研究

An Ontology- based Approach of Semantic Aggregation in Data Warehouse

文中介绍了数据仓库领域一种基于本体的语义集成方法。首先建立领域本体和数据源的局部本体,然后通过局部本体对应的概念树间的映射算法得到数据源全局本体,再和领域本体映射,得到映射关系。最后通过本体推理,得出隐含的语义关系,用最终的语义关系来指导数据抽取、转换和加载过程,实现数据仓库语义程度上的数据集成。

This paper discusses an ontology-based approach of semantic aggregation in data warehouse. Firstly, by building the the domain ontology and local ontologies of data sources, then building thees globe ontology from the mapping arithmetic of the ontology tree to obtain the mapping relations by mapping with the domain ontologies.Through the ontology inference to get the connotative semantic relations.Finally ,the process of data extract ,transform,and loading is started, and the problem of data intergration in semantic degree in data warehouse is solved.