不用主题词表等控制工具而直接使用关键词等自然语言进行的标引.
自由词标引 Free term indexing
Secondly,applying the free indexing and post-controlled vocabulary to the database can improve retrieval efficiency.
第二,在自由标引的基础上创建后控词表,有利于大大提高检索效果。
参考来源 - 中医古籍图像文献的自由标引方法研究·2,447,543篇论文数据，部分数据来源于NoteExpress
本文介绍了术语学中的一个新兴学科——计算术语学，分别介绍了术语的发现、术语的充实、术语的受控标引、术语的自由标引等问题。
This paper introduces a new scientific domain in terminology-computational terminology, it presents term acquisition, term enrichment, term controlled indexing and term free indexing.
鉴于高校学报学术论文中关键词标引现状，探讨了关键词的概念和如何抽取，介绍了自由标引关键词的方法，旨在使学报关键词的标引更加快捷、准确和规范。
This paper discusses the existing problems in key words indexing and introduces the free indexing methods in an effort to get the accurate and standardized key words efficiently.
自由词标引是对以《中国分类主题词表》为依据的主题标引的补充。
Free term indexing is a supplement for subject indexing of Chinese Classified Thesaurus.
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