基础教育资源搜索引擎(BERSE)通过对因特网上相关资源进行搜索、分类和标引，提供了基础教育资源检索服务。
The basic educational resource-searching engine (BERSE) provides the basic educational resources searching service through searching, classifying and indexing relevant resources in the Internet.
情报检索的目的是为用户服务，因而标引词的提取应以其与文献主题内容相关程度为标准。
Because the aim of information retrieval is to serve the users, the correlated degree of indexing words and the subject of the document should be the criteria of drawing them.
结论与文献内容密切相关的知识元标引研究，是实现知识管理系统的构建研究的关键点。
Conclusion it is the strategic point to achieve the study of knowledge Management Systems that constructs knowledge element closely related to the content of literature.
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