共查询到20条相似文献，搜索用时 171 毫秒
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本文通过对排架分类号和目录分类号的分析,提出了目录分类号细分、排架分类号粗分的类分方法,并就此方法如何提高工作效率和方便读者检索,提出了自己的见解。 相似文献
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詹萌 《现代图书情报技术》2005,21(5):50-52
提出了采用检索语言兼容性的研究方法建立分类法、主题法和学科代码表之间相互兼容关系的《分类集成词表》,实现类目名称、主题词与中图分类号、科图分类号之间的兼容互换关系,并利用这个关系,在书目检索系统中进行扩展检索方式研究,进而实现采用检索词入口,经过检索系统中检索语言之间的兼容性互换(检索词与分类号互换),最后检索系统用分类号进行检索结果提取。 相似文献
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图书馆编目工作中的一项核心工作-规范工作(一) 总被引：1，自引：0，他引：1
<正> 图书馆的编目工作的任务是组织馆藏,揭示馆藏,为读者提供有效的检索途径,使读者能方便、迅速地查到所需的文献资料。检索途径是通过检索点提供的。检索点有许多种,归纳起来可分为两大类:一类是各种特定的代码;一类是各种款目标目。各种检索点都有各自的特点和特定的检索功能。下面简要地予以叙述。用作检索点的代码有:分类号(以及以分类号为基础构成的索取点(Call number)),国际标准书号(ISBN)、国际标准连续出版物号(ISSN),以及其他专号,如:美国国会图书馆卡片号(LCCN)等。分类号是按学科体 相似文献
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浅谈《中文科技期刊论文数据库》检索技巧 总被引：1，自引：0，他引：1
《中文科技期刊论文数据库》（以下简称《科技库》）,是国内自行研制的系统检索中文科技文献的一个重要的光盘版的检索工具,检索途径有：主题词、分类号、著者、刊名、篇名、复合式６种。在检索文献中,如果用户提出的检索词是一些反映文献主题内容的自由词,通常我们都通过主题词──这个检索途径为读者检索。笔者最近发现,在使用《科技库》检索中文科技文献中,有时篇名检索比主题词检索所得到的文献更令读者感到满意,或者说,篇名检索的查准率高于主题词检索的查准率。 有这样一个例子,本校材料系一用户要求检索一课题：内燃机缸体… 相似文献
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总论复分表是现代体系分类法广泛采用的一种组配技术,但有些类目的设置与主表中部分类目的含义完全重合,对文献分类造成混淆,也使得分类号不够简洁,影响读者检索和文献利用。通过分析其中部分类目,探讨与主表中相关类目的关系。 相似文献
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关于检索工具对旧报刊的开发利用 总被引：1，自引：0，他引：1
本文通过总结旧报刊读者阅览情况,强调指出检索工具对旧报刊利用的重要性。在分析旧报刊文献和这部分读者需求特点的基础上,提出了合理的目录组织形式;分析了旧报刊缺少系统配套的检索刊物的原因,并提出相应的解决办法。 相似文献
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《中图法》如何适应计算机检索的需要 总被引：6，自引：0，他引：6
本文从《中图法》为适应计算机标引和检索的角度,分析了其几点不足之处,包括分类语言可读性和直观性差、排架与检索用分类号难协调以及组配技术存在的缺陷,提出了改进的办法。 相似文献
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As studies show, undergraduates needing information frequently begin their research in a search engine such as Google rather than a library online catalog. To test the efficacy of that research approach, a local usability study of fifty topics in ten disciplines of study was performed. In a comparison of WorldCat.org and Google Books to the library catalog, it was found that more than double the number of hits to library-held material was found by searching WorldCat.org than the library online catalog alone. It was also learned that twice as many hits to articles and material within a thirty-mile radius were found in WorldCat.org and Google Books as compared to searching the online catalog alone. These results suggest the need to improve the native interface of catalogs and for continued placement of resources outside the library catalog. 相似文献
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对Lucene内部的相似度评分算法进行研究分析,指出其在书目搜索中,未考虑图书的受欢迎度这一因素对搜索结果排序的影响。提出一种改进的算法并予以实现。实验结果证明,改进的算法能将较受读者欢迎的图书排列在前,提升读者的书目搜索体验。 相似文献
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This paper describes the procedures used at the Library of the College of Physicians of Philadelphia to divide its ninety-year-old dictionary card catalog. The division was necessitated by overcrowding, obsolete subject headings, and lack of a complete authority list which resulted in like materials being scattered throughout the catalog under several headings. Two catalogs were created: the historical-biographical catalog, representing all works published before 1950 and all works of historical or biographical nature; and the current catalog, containing all works published from 1950 on, excepting historical or biographical materials. The 1950- catalog was further divided into name and subject catalogs, and the subject section was revised according to MeSH. The project was completed in about two years. As a result, searching time has been much reduced, and the library is able to take advantage of the annual revisions of MeSH to update the subject catalog. 相似文献
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Larisa Walsh 《Cataloging & classification quarterly》2013,51(1):43-59
This study explored the functionality of the University of Chicago's faceted catalog, Lens, in respect to monographic series. A user study was designed to evaluate the efficiency of Lens in searching for monographic series and also to determine whether controlled series access in the catalog record improves the search results. The results of the study indicate that while Lens could be considered an adequate tool for searching series that are known to be published under the same title, some changes would make it a better search engine for a series that changes series statements from one volume to another. 相似文献
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《The Reference Librarian》2013,54(60):61-85
Summary This study examines the search tactics used by Web users to start their searches and deal with search problems such as too many postings and no relevant postings. Four search topics were developed to allow for comparison of search tactics used in four types of searches. The tactics analyzed include search statements, number of search statements, starting points, and tactics to solve the two search problems mentioned above. Search statements were searched in Alta Vista to determine their success and their nature was analyzed. With regard to the tactics used to address search problems, t-tests and chi-square tests found no difference between searches for texts and searches for graphic information, and between known-item searches and subject searches. Some of Web users' search tactics were similar to those for online searching or online catalog searches, but several tactics were unique to Web searching. 相似文献
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The MELVYL MEDLINE project resulted in the addition of a full five-year subset of MEDLINE to the University of California's (UC) MELVYL online union catalog. As one of the nation's largest MEDLINE end-user searching systems, MELVYL MEDLINE provides online bibliographic access to the biomedical journal literature for all UC personnel at over seventy library sites or by remote access. This paper summarizes the project's accomplishments, reports MELVYL MEDLINE use and its impact on library services, and provides insights for other end-user search systems. The project serves as a model for adding databases to the MELVYL catalog and demonstrates the potential for use by other disciplines of a specialized database when readily accessible. Evaluation results report high user satisfaction and high usage. However, many advanced searching features of the interface are little used by searchers. Effects on library services include marked increases in reference transactions and interlibrary loans, with significant declines in mediated search services. Future MELVYL MEDLINE enhancements include matching search retrievals to journal locations, linkage to an online document delivery system, and consideration of building a superset of databases by combining MELVYL MEDLINE with citations from another database in the MELVYL catalog. 相似文献
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《图书馆管理杂志》2013,53(1-2):135-136
Abstract With the transformation of the card catalog into the online public access catalog came the expectation of its increased functionality. For the most part, today's online catalogs perform an expanded list of tasks quite effectively. Bibliographic utilities, system vendors, and individual libraries continue to improve bibliographic retrieval by providing new and better services through the catalog. In spite of these improvements, many observers believe that online catalogs have reached their maturity. Today's information environment includes a wealth of material to which online catalogs cannot provide universal and up-to-date access. Increasingly, librarians are turning to federated searching portal applications to find a means of managing the flood of digital information that threatens to engulf users. This chapter describes essential functionality of such tools, suggesting directions and strategies for improving them. The author concludes that, while the online catalog will continue to function as the principal tool for access control of the library's physical collections, the federated searching portal will ultimately serve as the library's principal Web gateway to digital resources. 相似文献
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《Library & information science research》1998,20(2):115-131
Previous information retrieval research has neglected examination of older adults' search behavior. The present study examined the online search performance and associated errors of 54 older adult users of a representative online library catalog system. Participants' error data were examined in the framework of Borgman's three layers of knowledge needed to perform online library catalog searching: (1) conceptual knowledge, (2) semantic knowledge, and (3) technical skills in executing the query. The results of older adults were consistent with findings of previous online library catalog studies with younger adults. Older adults experienced serious problems at all three knowledge layers but experienced their most severe difficulties with conceptual knowledge of how to search the online library catalog system (e.g., formulating queries, understanding and using keyword and Boolean searching, and understanding the contents of databases). The significance of these findings for older adults' use of online library catalogs will be discussed. 相似文献
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Tamar Ganor 《Journal of Map & Geography Libraries》2017,13(2):175-197
A traditional library catalog does not do justice to maps and aerial photographs. Text can never fully describe them and maps' and aerial photographs' geographic coverage or perimeters cannot be displayed visually in the online public access catalog (OPAC), so searching based on their textual metadata without specific spatial reference data used also for display purposes is often not enough to locate relevant items. The Hebrew University of Jerusalem's (HUJI) Geography Department has developed a spatial search engine for their scanned aerial photographs collection that allows users to locate one or more aerial photographs according to the area of the Earth's surface that was photographed and their accompanying metadata. The Humanities and Social Sciences Library, which holds a large unscanned print map collection, has asked to integrate a similar map search mechanism in the Department's existing search engine, and a new website was launched in December 2015 (http://ccg.huji.ac.il/aerialphotos/) showing the aerial photographs' center points alongside the maps' rectangle perimeter. The search engine retrieves maps and aerial photographs that intersect with a user-drawn rectangle. This article discusses the characteristics of these collections, the rationale behind searching for maps and aerial photographs together, and the process of defining and building this spatial search engine. This method allows users to view which items are available in their area of interest side-by-side, on a Google Maps background map. 相似文献