共查询到18条相似文献,搜索用时 406 毫秒
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《中国分类主题词表》主题标引应用研究 总被引:2,自引:0,他引:2
以《中国分类主题词表》为标引依据,分析了主题标引的因素、主题标引的方式、功用和应该遵守的规定,指出主题标引的重要性以及应用中出现的问题。 相似文献
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本文综合《中国分类主题词表教程》、《中国分类主题词表标引手册》、《文献标引工作》三书的主题标引规则,结合自己的看法,论述了传记文献主题标引的方法,呼吁编制一部详尽的主题标引规则。 相似文献
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基于Hopfield网络的主题索引 总被引:1,自引:0,他引:1
主题法与分类法一起,自有文献以来一直是文献整序的重要方法。本文讨论了主题法原理、主题标引方法和可用于主题标引的自动标引方法,探究了Hopfield网络的原理和算法,举出一个基于Hopfield网络的主题标引方法。 相似文献
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本文指出MeSH词表及其主题词标引在检索、医学期刊规范化、图书编目和检索工具中检索入口设置的重要作用;论述在本单位编制的"全国医药卫生成果题录库微机管理系统"主题标引中选择MeSH词表作为主题词来源的原因,以及标引过程中对关键词的标引和实际碰到的问题的处理体会;最后提出克服人工标引的弊端--自动标引,作为努力方向. 相似文献
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CBMdisc主题标引一致性的探讨 总被引:7,自引:0,他引:7
通过一个发表在两种不同期刊上的同一文献在CBMdisc中标引不一致的例子,分析了造成主题标引不一致的原因,并就减少这种主题标引不一致提出了几点建议。 相似文献
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Christian Jacquemin Batrice Daille Jean Royaut Xavier Polanco 《Information processing & management》2002,38(6)
This article presents the human evaluation of ILIAD, a program for machine-aided indexing (MAI). It consists of two language engineering modules and is designed to assist expert librarians in computer-aided indexing and document analysis. Our aim is the expert evaluation of automatic multi-word term indexing. Evaluation is performed by documentary engineers. Cataloging and indexing are their principal tasks. They also have a good scientific knowledge of the domain to which the indexed documents belong.We first present the ILIAD program and the two systems submitted to this evaluation, the methodology (protocol) adopted, the differences between the protocol and the implementation, and the results of these evaluations. Human evaluation is divided into three parts: firstly the evaluation of controlled indexing, then free indexing and finally term variant extraction performed during controlled indexing. Finally, we analyze the relevance of this evaluation by calculating the agreement frequency and the Kappa coefficient and propose some future developments. 相似文献
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[目的/意义]基于文本挖掘技术自动发现更具代表性的文献内容主题词,通过定位主题词在章节中的具体位置,并基于可视化技术进行主题标引,帮助读者直观高效发现文献主题间的潜在关系。[方法/过程]基于文本挖掘技术深入文献内容层挖掘主题词,并利用可视化工具直观呈现所获信息,在此基础上尝试构建可视化主题自动标引系统,并在格萨尔领域的多个主题中对该系统的自动标引效果进行验证。[结果/结论]研究结果显示,该标引方法在格萨尔领域实现了文献内容级的可视化主题自动标引,快速精准地定位到章节、段落和句子。标引相关信息获取过程直观可视,并且具有交互性,可提升用户体验和参与度。文章以《英雄格萨尔》为例完成系统验证,但该标引方法技术本身无领域限定,可应用于其他领域的文献。 相似文献
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The profusion of online resources calls for tools and methods to help Internet users find precisely what they are looking for. Quality controlled gateway CISMeF provides such services for health resources. However, the human cost of maintaining and updating the catalogue are increasingly high. This paper presents the automatic indexing system currently developed in the CISMeF team to be used as such for preliminary indexing, or after human reviewing for the final indexing. The system architecture, using the INTEX platform for MeSH term extraction is detailed. The results of a first evaluation tend to indicate that the automatic indexing strategy is relevant, as it achieves a precision comparable to that of other existing operational systems. Moreover, the system presented in this paper retrieves keyword/qualifier pairs as opposed to single terms, therefore providing a significantly more precise indexing. Further development and tests will be carried out in order to improve the coverage of the dictionaries, and validate the efficiency of the system in the indexers’ everyday work. 相似文献
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一个基于本体论全文自动标引方案 总被引:5,自引:1,他引:5
本文为支持数字图书馆全文检索精度的提高,提出了一个基于本体论全文自动标引方案。该方案利用本体论的方法,强调词与词之间的内在概念联系,着重解决传统的人工标引不能全面概括全文,而且词与词之间缺乏概念性的连接,很难反映文件主题的全面内容及由于多义词、同义词等的原因造成漏检或检索结果返回信息太多,失去检索意义,达不到理想效果的问题。并为数字图书馆在进行主题标引时实现自动化操作。 相似文献
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医学文献光盘数据库主题标引规律的探讨 总被引:3,自引:0,他引:3
In order to search information more effectively, this essay compares CBMdisc and MEDLINE for their similarities and differences in subject indexing. It also puts forward some suggestions about subject indexing of Chinese medical literatures. 相似文献
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单汉字索引是中文全文检索索引技术中一个主要方法,此方法在索引的空问和检索的效率方面都存在不足。本文引入单元词索引,并分析试验数据,表明引入单元词索引后,索引的空间效率和检索的时间效率均有提高。 相似文献