基于本体的异构数据集成方法  

Heterogeneous databases integration approach based on ontology

作　　者：李星毅[1,2] 高文浩[1] 施化吉[1] 

机构地区：[1]江苏大学计算机科学与通信工程学院,江苏镇江212013 [2]北京交通大学电子信息工程学院,北京100044

出　　处：《计算机工程与设计》2009年第8期1931-1933,1953,共4页Computer Engineering and Design

基　　金：国家火炬计划基金项目(2004EB33006[0]);江苏省高校自然科学指导性计划基金项目(05JKD520050)

摘　　要：本体具有很强的表达概念语义和推理的能力,为解决多数据源数据集成中语义异构的问题,本体被逐渐应用于其中。给出了一种基于混合本体的信息集成方法,通过建立局部本体、全局本体,以及它们之间的映射,使对全局本体的全局查询能够分解为对底层数据源的查询,重点讨论了该方法中本体的映射,在映射中加入了属性转换,解决了其它映射形式只能表达简单的映射或映射不易维护的问题,并且提高了系统的查全率和查准率。Ontology has a strong ability in expressing the concept semantics of specified domain and speculating, so it is gradually applied to data integration of multiple data sources to eliminate the semantic heterogeneous. An information integration approach based on hybrid ontology is given, which needs establishing local ontology for every data source, a global ontology and a mapping between them. Hereby it can decompose the overall search to the global ontology to each bottom data source. The emphasis focus on the issue of ontology mapping between the global ontology and the local ontology, by the means of adding attribute conversion to the mapping overcoming the drawback in other mapping form, which can only express simple mapping and have difficult to maintain the mapping. At the same time the accuracy and comprehensiveness of the search is improved.

关 键 词：数据异构 信息集成 本体 语义 映射 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]