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Web数据集成系统的集成查询接口复杂,普通用户不容易使用。本文提出了一种查询重构方法EasyUI,将关键词查询重构为结构化查询,实现了基于关键词查询的大规模Deep Web信息检索。描述了EasyUI的系统体系结构,介绍了构成EasyUI的主要组件,以及创建Deep Web索引、用户输入处理、领域映射和查询转换等查询重构的关键技术。实验证明了这种方法的有效性。
Web data integration system integrated query interface is complex, ordinary users are not easy to use. In this paper, a query reconstructing method, EasyUI, is proposed to reconstruct the keyword query into a structured query, which implements the large-scale Deep Web information retrieval based on the keyword query. Describes the system architecture of EasyUI, describes the major components that make up EasyUI, and key techniques for creating query reconstructions such as Deep Web indexing, user input handling, domain mapping, and query transformation. Experiments prove the effectiveness of this method.