一种能综合利用多种检索技术优势的数据库检索功能设计

Retrieval Function Project on a Database System Utilizing the Advantage of Search Technologies

首先说明 ,通过分面分类、后控检索和超链接检索技术的利用 ,信息检索中分类、主题检索优势难以兼得 ,采用自然语言又影响查全率 ,扩检、缩检难以同时方便进行的问题是可以解决的。然后又说明 ,采用分面分类技术可编制一个分类主题一体化的联机词表 ,在联机词表的基础上可生成具有各种词间关系的后控词表 ,由于在后控词表网状词间关系的基础上还可引入超链接检索技术 ,因此如上三种技术的综合利用成为可能 ,一个具有分类、主题检索两方面优势 ,使用自然语言、又能保障检索质量 ,并能方便的进行扩检、缩检检索功能设计得以实现。

For the fine retrieval function of the database system, the facet classification, post controlled retrieval and hyper chaining search are used. Because the class name is also a subject word in the facet classification system, the search is convenient no matter by class or subject word. Meanwhile, there is a net relation among the subject (class) in the facet classification system, the hyper chaining retrieval can be used, so the wider or more specialized search is easy along the chain. For another, there is a line word table in the database, the realization of post controlled retrieval is easy, therefore, the retrieval effects is guaranteed while the automatic indexing and nature language retrieval are used.