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图书馆自动化集成系统中的主题检索研究 总被引：3，自引：1，他引：2
从图书馆自动化系统中书目数据的主题标引和主题检索入手,系统地分析了主题检索途径在计算机检索系统中的地位和作用,探讨了主题检索发展的趋势,试图为现阶段书目数据建设提供有益的参考意见. 相似文献
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Alice Keller 《Cataloging & classification quarterly》2013,51(8):895-904
The survey described in this article investigates the attitudes of librarians in German- and English-speaking countries toward subject indexing in general, and automatic subject indexing in particular. The results show great similarity between attitudes in both language areas. Respondents agree that the current quality standards should be upheld and dismiss critical voices claiming that subject indexing has lost relevance. With regard to automatic subject indexing, respondents demonstrate considerable skepticism—both with regard to the likely timeframe and the expected quality of such systems. The author considers how this low acceptance poses a difficulty for those involved in change management. 相似文献
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Jacques Savoy 《Information Retrieval》2007,10(6):509-529
This paper reports on the underlying IR problems encountered when indexing and searching with the Bulgarian language. For
this language we propose a general light stemmer and demonstrate that it can be quite effective, producing significantly better
MAP (around + 34%) than an approach not applying stemming. We implement the GL2 model derived from the Divergence from Randomness paradigm and find its retrieval effectiveness better than other probabilistic, vector-space and language models. The resulting
MAP is found to be about 50% better than the classical tf idf approach. Moreover, increasing the query size enhances the MAP by around 10% (from T to TD). In order to compare the retrieval
effectiveness of our suggested stopword list and the light stemmer developed for the Bulgarian language, we conduct a set
of experiments on another stopword list and also a more complex and aggressive stemmer. Results tend to indicate that there
is no statistically significant difference between these variants and our suggested approach. This paper evaluates other indexing
strategies such as 4-gram indexing and indexing based on the automatic decompounding of compound words. Finally, we analyze
certain queries to discover why we obtained poor results, when indexing Bulgarian documents using the suggested word-based
approach. 相似文献
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《中国分类主题词表》的结构及功能评介张强Ａｂｓｔｒａｃｔ：Ｔｈｅ＂ＣｈｉｎｅｓｅＣｌａｓｓｉｆｉｅｄｓｕｂｊｅｃｔＴｈｅｓａｕｒｕｓ＂ｗｉｔｈｉｔｓｉｎｔｅｇｒａｔｉｏｎｏｆｃｌａｓｓｉｆｉｃａｔｉｏｎａｎｄｓｕｂｊｅｃｔｉｎｄｅｘｉｎｇｉｓＣｈｉｎ... 相似文献
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中文期刊文献通用词标引分析 总被引：1，自引：0，他引：1
通用因素是文献主题的构成因素之一，对主体因素起细分作用。通用词是指那些在专业领域没有独立检索意义的泛指词。在中文期刊文献标引的过程中，通用词的使用对其标引结果产生着重要的影响。文章讨论了通用词标引的一般规则，并以《中国期刊网》中的文献为例，进行抽样统计和实例分析，归纳了通用词标引的错误现象及其原因，并对期刊文献的通用词标引提出了几点改进意见。 相似文献
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田梅 《中华医学图书馆杂志》2008,17(2):41-43
对医学文献标引中关于副主题词使用的常见错误进行了分析,通过实例说明副主题词的修饰限制作用,并对副主题词的使用规则进行了探讨,对提高副主题词标引质量提出了建议。 相似文献
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Maaz A. Khan BA Oliver D. Mowforth BA MB BChir Isla Kuhn MA MSc Mark R. N. Kotter MD MPhil PhD Benjamin M. Davies MRCS BSc 《Health information and libraries journal》2023,40(2):181-189
Background
Degenerative cervical myelopathy (DCM) is a recently proposed umbrella term for symptomatic cervical spinal cord compression secondary to degeneration of the spine. Currently literature searching for DCM is challenged by the inconsistent uptake of the term ‘DCM’ with many overlapping keywords and numerous synonyms.Objectives
Here, we adapt our previous Ovid medline search filter for the Ovid embase database, to support comprehensive literature searching. Both embase and medline are recommended as a minimum for systematic reviews.Methods
References contained within embase identified in our prior study formed a ‘development gold standard’ reference database (N = 220). The search filter was adapted for embase and checked against the reference database. The filter was then validated against the ‘validation gold standard’.Results
A direct translation was not possible, as medline indexing for DCM and the keywords search field were not available in embase . We also used the ‘focus’ function to improve precision. The resulting search filter has 100% sensitivity in testing.Discussion and Conclusion
We have developed a validated search filter capable of retrieving DCM references in embase with high sensitivity. In the absence of consistent terminology and indexing, this will support more efficient and robust evidence synthesis in the field. 相似文献10.
图书馆网络专题知识组织与个性化服务系统的开发研究 总被引：2，自引：0，他引：2
网络专题知识组织与个性化服务系统,是指以信息技术领域中的重点学科为对象,以完全基于因特网应用的高质量网络专题知识数据库为用户提供基于XML的知识门户语义代检索、RSS及无线个性化知识服务。系统建设过程中要把握好开发平台选择、数据格式标准化、知识标引、数据库智能化构建及UML建模等重要环节。 相似文献
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Sterling Coleman Jr 《International Information and Library Review》2013,45(4):157-180
This work is an annotated bibliography that consists of articles, books, conference papers, dissertations, reports, etc. published in various library and information science forums on the subject of librarianship in the Maghreb. The goal of preparing this work is to provide a list of citations with abstracts that librarians, library students, and library scholars can use to perform research within this subject area and further the body of knowledge. The research methodology that was used to find these citations involved searching the database versions of ERIC, Dissertations Abstracts Online, and Library Literature within the online public access catalog of the Auburn University library system. It also involved searching the online databases of Library and Information Science Abstracts (LISA), British Education Index, andEducation Abstracts within the DIALOG database as well as the respective print versions of these resources. While this work is by no means an exhaustive critique of the entire Maghrebi library and information science literature, it does strive to be comprehensive in terms of its country-by-country analysis of librarianship and information science within the region. In providing a citation for a non-English language work, the English equivalent of the title of that work will be given next to the non-English title. 相似文献
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This work is an annotated bibliography that consists of articles, books, conference papers, dissertations, reports, etc. published in various library and information science forums on the subject of librarianship in the Maghreb. The goal of preparing this work is to provide a list of citations with abstracts that librarians, library students, and library scholars can use to perform research within this subject area and further the body of knowledge. The research methodology that was used to find these citations involved searching the database versions of ERIC, Dissertations Abstracts Online, and Library Literature within the online public access catalog of the Auburn University library system. It also involved searching the online databases of Library and Information Science Abstracts (LISA), British Education Index, andEducation Abstracts within the DIALOG database as well as the respective print versions of these resources. While this work is by no means an exhaustive critique of the entire Maghrebi library and information science literature, it does strive to be comprehensive in terms of its country-by-country analysis of librarianship and information science within the region. In providing a citation for a non-English language work, the English equivalent of the title of that work will be given next to the non-English title. 相似文献
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本文主要结合自然语言在国内外的应用现状，分析了自然语言检索的发展趋势，同时对自然语言标引技术和处理方法进行了探讨，阐述了自然语言智能检索原理及其在智能搜索引擎中的应用，并就其在智能检索中的应用改进提出了自己的一点看法，预见了第三代搜索引擎的自然语言化是一种必然趋势。 相似文献
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网络环境下主题语言的应用 总被引：3，自引：0，他引：3
本文简要回顾了主题法的发展历程,叙述了主题语言与分类语言在组织和揭示网络信息中的作用,分析了两者的各自优缺点,并针对主题法检准率低的特点,列举了目前常用的几种提高检准率的方法。 相似文献
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Nadine P. Ellero 《图书馆管理杂志》2013,53(5-6):323-343
ABSTRACT “Discovery” is today's term for user-centered information searching and access. A growing number of libraries have embraced Web-scale discovery services (WSDS) featuring one-stop searching of libraries’ owned and licensed collections. Recognizing potential benefits to users of these systems, a mid-sized ARL library formed a discovery-tool committee in spring 2012 to explore selection of a WSDS in keeping with its values, vision, and institutional mission. This article explores “discovery” as it assesses WSDS performance and reports results obtained from a request to WSDS vendors to showcase the search power of their system with actual reference questions. 相似文献
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在网络环境下,主题法将成为学位论文主要的标引与检索工具,其标引质量影响数据质量。结合工作实践,就学位论文主题标引的特点与基本规则以及工作中遇到的问题进行分析,目的在于提高网络环境下学位论文主题标引质量以及学位论文的检准率。 相似文献
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文章结合自然语言在国内外的应用现状。分析了自然语言检索的发展趋势，同时对自然语言标引技术和处理方法进行了探讨，阐述了自然语言智能检索原理及其在智能搜索引攀中的应用，并就其在智能检索中的应用改进提出了意见，认为，第三代搜索引擎的自然语言化是一种必然趋势。 相似文献
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基于作者中文图书主题标引的工作实践,重点阐述了中文图书主题标引工作中的主题词的查找、在版编目数据的利用以及标引工具书的使用。同时,就标引人员如何提高中文图书主题标引质量谈了自己的看法。 相似文献