基于本体的查询系统研究

The Research of Query Answering System Based on Ontology

该文对查询系统做了深入的研究,提出了一种基于本体的智能查询系统的形式化模型,并且对系统的具体运行过程进行了详细的分析。该模型充分考虑了用户查询的语义信息,并且引入了本体环境和用户查询环境来对系统进行建模。将用来对数据库的语义信息进行描述的本体层引入到异构的、分布式的数据库系统中,在方便用户进行查询的同时增加查询结果的相关性和用户满意度。同时,系统能够及时地反映数据库信息的动态变化。

In this paper,a model of query answering system based on ontology is presented.Then the running process of the system is discussed in detail.From the perspective of the semantical information of users' query,an ontology environment and a query environment are introduced to model the system.Introduction of an ontology level to the database system with heterogeneity is in favor of the process of users querying and improves the relevance of the answering results.At the same time,the system can reflect the dynamic change of the information in the databases.