document retrieval system

基本解释

Science and technology document retrieval system is commonly used by researchers as document retrieval tools.
科技文献检索系统是科研人员常用的文献检索工具。
This paper gives a description of the knowledge-based document retrieval system, and makes an introduction to a kind of inquiry language based on predicate.
文中对基于知识的文献检索体系进行了描述，并介绍了一种基于谓词的查询语言以及基于知识的搜索引擎的工作原理。
In the end, an experiment is carried out with 252 documents chosen from domain information retrieval. A 4-layer TM is created and based on it a document retrieval system is developed.
本文最后以“信息检索”领域为例从中选择了252篇文献进行试验，构建了一个4层的主题地图并以此为基础开发了一个文献检索原型系统。