Ontology-based query division and reformulation for heterogeneous information integration

被引:13
作者
Li, Jian [1 ]
Song, Jing-Yu [1 ]
Zhong, Hua [1 ]
机构
[1] Technology Center of Software Engineering, Institute of Software, Chinese Academy of Sciences
来源
Ruan Jian Xue Bao/Journal of Software | 2007年 / 18卷 / 10期
关键词
Heterogeneous information integration; Ontology; Query division; Query equivalence;
D O I
10.1360/jos182495
中图分类号
学科分类号
摘要
People can obtain information from heterogeneous data resources by semantic querying based on ontology. The difficult problem is how to reformulate a global query into multiple sub-queries over those local data bases. This paper presents a kind of uniform expression for queries of concept instances and a method in dividing the query expression into the local ones. All local query results can be integrated for the users' purposes. Using these methods to query integrated data resources, users can get right results they desire.
引用
收藏
页码:2495 / 2506
页数:11
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