摘要
查询重组是数据集成系统中必不可少的模块之一 ,关于数据源的内容以及它们之间联系的描述 ,是其首要任务 .在基于IA(InformationAgent)的数据集成系统中 ,可以利用多Agent系统中的匹配 (Matchmaking)机制来实现查询重组 ,本文首先给出在这种环境下查询重组模块的工作流程 ,然后提出一种知识表示中的框架来描述数据源和用户查询 。
Query reformulation is a key module in data integration systems. It is the first task for query reformulation to describe the contents of data sources and the relationship between the data sources. In a data integration system based on information agents, it is necessary to implement the query reformulation by using matchmaking mechanism used in the multiple agents systems. In this paper, we first present working procedure of query reformulation, and then propose a new approach framework/specification, which is used in knowledge representation, to describe both the data sources and users queries in order to be used efficiently in matchmaking and query rewriting.
出处
《福州大学学报（自然科学版）》
CAS
CSCD
2002年第3期289-293,309,共6页
Journal of Fuzhou University(Natural Science Edition)
基金
福建省教育厅科研项目 (JB0 10 41)
