Each Geobase record contains full bibliographical citation, indexing terms and codes, and almost 99% of records contain abstracts.
数据库中的每条信息都有完整的引文目录、索引词和文摘号号，99%的记录有英文文摘。
Text representation approaches with term weighting schemes such as commonly used TF/IDF are widely used to extract indexing terms of documents.
文本表达是指将表达文献主题内容的词汇抽取出来的过程。常用的向量空间表达法主要采用TF/IDF等权重法。
Guidance on indexing can be found in ISO 5963, Documentation - Methods for examining documents, determining their subjects, and selecting indexing terms.
有关建置索引的指导纲要，可参考ISO 5963：文件化-检视文件、决定主题与选择索引项目的方法。
Linked search terms in the "tag clouds" at the beginning of the topics improve indexing for search and provide a useful, alternative means of navigating the documentation.
主题开头部分的“标签云”中的链接搜索词改进了搜索索引，提供另一种有用的文档导航方法。
The search terms in a full-text search query are analyzed similarly to the analysis done during the indexing process.
全文搜索查询中的搜索词汇的分析方式类似于索引过程中的分析方式。
Searching the Internet like this can be expensive, both in terms of the bandwidth required to communicate Web content to the indexer and also the computational expense of indexing the results.
对于Internet进行这样的搜索，其代价非常昂贵，Web内容与索引程序进行通信所需要的带宽以及对结果进行索引所需要的计算成本都很高。
This paper's research focuses on the methods of automatic separation of terms and automatic indexing.
本文主要研究了两个方面：自动分词方法和自动标引方法。
Through fully comparative study on automatic separation of terms and automatic indexing, this paper presents five methods of automatic separation of terms and seven ways of automatic indexing.
通过全面的比较研究，本文认为自动分词方法可以分为五个类型，自动标引的方法分为七种。
To address this issue, we proposed a new indexing formalism that considers not only the terms in a document, but also the concepts.
本方法引入了概念类的概念，并且提出了用概念之间存在的关系来表示文档中的词汇和概念的语义重要度。
To address this issue, we proposed a new indexing formalism that considers not only the terms in a document, but also the concepts.
本方法引入了概念类的概念，并且提出了用概念之间存在的关系来表示文档中的词汇和概念的语义重要度。
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