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信息检索中“相关性”与“相关反馈”研究概述 总被引：6，自引：0，他引：6
相关性是信息检索中的核心概念,相关反馈是信息检索系统但对于相关性的研究却与相关反馈在系统中的实际应用存在着脱节.文章对相关性与相关反馈的有关情况做了概述,以期二者更大程度的融合,开发更适合于用户的信息检索系统. 相似文献
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网络信息检索结果的相关性差、信息过载等问题严重影响了用户的利用效率,基于交流互动基础的合作信息检索模式便成为关注的重点。国外对其的研究多集中于合作信息检索的理论;国内对合作信息检索的研究为数不多,集中于国外的合作信息检索、合作信息检索的演化研究,只有少数学者对合作信息检索的模型、系统构建、运行机制进行了研究,其理论与应用研究都有待深入。 相似文献
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英汉交互式跨语言检索系统设计与实现 总被引：1，自引：0，他引：1
吴丹 《现代图书情报技术》2009,3(2):89-95
针对跨语言信息检索的查询翻译歧义性问题,采用交互式系统开发设计方法,对基于相关反馈的跨语言信息检索技术进行研究和分析,提出一个英汉交互式跨语言信息检索系统,实现用户辅助查询翻译、多级用户相关性判断,以及翻译优化与查询扩展等相关反馈功能,结果明显提高了检索效果。 相似文献
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成颖 《现代图书情报技术》2011,(9):46-53
基于相关性判据研究成果、学术信息检索系统特征调研成果、信息系统成功模型(ISSM)以及TEDS模型构建面向相关性判据的学术信息检索系统成功模型,对模型中的关系进行简要分析,并提出研究假设。 相似文献
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信息检索相关性研究综述及发展趋势 总被引：2，自引：0，他引：2
文章从相关性的基本概念、理论模型、用户认知、影响因素以及当前基于Web的相关性等方面对信息检索的相关性问题进行了系统梳理,并指出该领域研究未来的发展趋势。 相似文献
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相关性理论是情报学基础理论之一,是衡量信息检索效能的关键指标,而本体信息检索是信息检索领域研究的前沿课题、发展方向。本文以米扎罗四维相关性模型为基础,对不同类型本体信息检索模型式下的相关性表现进行了对比研究,发现在本体信息检索条件下,相关性得到较大提高。 相似文献
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关涉是从逻辑视角出发,包容系统因素且容纳情境因素的相关性定义。目前常用的定义方法是形式化一组关涉属性,以这组属性来表示关涉。关涉属性的选择是一个IR逻辑体系所用语言的定义问题,而信息检索问题本质上是一个语言问题,因此这组关涉属性代表对信息检索系统要素的最一般的抽象描述,也就是信息检索系统的本质——关涉关系。关涉理论可用于信息检索系统定性分析和比较。 相似文献
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《Slavic & East European Information Resources》2013,14(1-2):123-143
ABSTRACT The article examines the most important periodicals of ethnic minorities in Poland. After 1989, many ethnic groups (e.g., Germans and Romanies) were allowed to publish journals and newspapers for the first time since the end of World War II. The publications examined show the rich cultural life of the various ethnic groups as well as their current status in Poland. In addition to popular titles, some scholarly publications are also discussed. 相似文献
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Jon C. Giullian 《Slavic & East European Information Resources》2013,14(3):278-284
The author answers a reference question on bibliographic sources for the Ukrainian periodical press 1840–1850. Helpful publications include bibliographies, guides, and library catalogs. These potentially make mention of revolutionary developments in Hungary (such as the Twelve Points paragraph of the Demands of the Hungarian Nation in March 1848, the subsequent April Laws, and Hungary's declaration of independence in April 1949), and elsewhere in the Hapsburg Empire. 相似文献
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《Slavic & East European Information Resources》2013,14(1):25-74
ABSTRACT The history of the almanac in Croatia is reconstructed through primary research in bibliographic and archival sources. The almanac is a vehicle for knowledge communication in informal contexts, engaging both oral tradition and literary forms traceable to medieval literacy and ways of structuring knowledge. The history of the almanac in Croatia reflects the changing context of the book trade, literacy, and the evolution of language. Four main stages are identified: (1) the beginning of the annual almanac in the seventeenth century; astrological almanacs reflecting the sensibility of the Baroque period; (2) the Enlightenment's stimulation of almanac publishing in the spirit of contemporary secular reforms in agriculture and education; (3) nineteenth-and twentieth-century almanac trade, showing complex and overlapping networks for the production, distribution and appropriation of printed almanacs;(4) roughly the end of World War II, when the almanac slowly moved out of the role of a popular mass medium and into specialized niches represented by regional, diaspora, and religious almanacs. 相似文献
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Neil De Young 《Publishing Research Quarterly》2009,25(3):139-146
Some key questions for publishers in today’s market are: Could Amazon’s recent merger and acquisitions strategy create a disruptive or paradigm shifting business model in the publishing industry? Do their recent actions post mergers and acquisitions illustrate a predicable pattern of behaviour that publishers can strategize around? This paper will explore these questions and look at some of the possible reasons behind Amazon’s business practices and the possible consequences to publishers. 相似文献
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Barbara Lison 《图书馆管理杂志》2013,53(2):180-187
ABSTRACTGerman authorities are expecting more than 1 million refugees by the end of 2015. These people come to Germany to seek protection and assistance and to build a new life, therefore it is important to welcome them and to assist them in their integration as soon as possible. This situation creates a versatile and perfectly fitting opportunity for cultural and educational programs, including libraries, which can play a vital role in this integration process. The key to integration is the knowledge of the German language, and the most important challenge now is to teach the necessary language skills to as many asylum-seekers as possible. 相似文献
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《Journal of Web Librarianship》2013,7(1):41-59
Abstract Many libraries use RSS to syndicate information about their collections to users. A survey of 65 academic libraries revealed their most common use for RSS is to disseminate information about library holdings, such as lists of new acquisitions. Even though typical RSS feeds are ill suited to the task of carrying rich bibliographic metadata, great potential exists for developing applications that can exploit metadata exposed to Web services via RSS. Using the MODS metadata format, entire catalog records can be seamlessly embedded in RSS 2.0 feeds. Existing tools, such as Library of Congress Java toolkits and XSLT stylesheets, can facilitate this process, while a new XSLT stylesheet may be used to create the RSS feeds complete with MODS records. As an example of the added functionality these MODS/RSS feeds can offer, records from a MODS-enriched RSS feed can be ingested into a non-RSS application such as Zotero. As more emerging library technologies use Web services architectures to handle data objects, the ability to syndicate catalog records will become more critical to providing innovative library Web services. 相似文献
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Most studies of collection development mask inadequate theoretical underpinnings with facile assumptions and dazzling statistical manipulations. This essay, in moving toward a model for collection development within both specific collections and library systems as a whole, seeks to demonstrate the full range and complexity of relevant factors. An enlarged theoretical grasp should help highlight both the possibilities and the challenges of existing approaches. One result could be a shift toward gaming or simulation techniques as more realistic analytical tools. 相似文献
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Jason D. Phillips 《期刊图书馆员》2013,64(1):82-101
An annotated list is presented describing seventeen periodicals that cover significant aspects of the gay, lesbian, bisexual, and transgender (GLBT) community and their culture in whole or in part, with popular content rather than an academic or research focus. The titles included are a selective and representative sampling. The entry for each periodical includes the following information: periodical title, publisher/editor and address, basic information, publication data, content, Internet information, an abstract/annotation, and evaluative statement 相似文献
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SUMMARY The state of Illinois funded a large scale Ariel project. This is a report of the project's successes and shortcomings. Although widely successful, additional training in the use of sophisticated hardware, primarily Minolta scanners, is needed. Data on sending and receiving is included. 相似文献
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SUMMARY Ariel files are the starting point for electronic delivery of interlibrary loan articles through ILLiad, Virginia Tech's interlibrary loan system. Despite some advantages to electronic delivery of articles to their desktops, a large majority of ILL customers continue to prefer print on paper delivery rather than electronic delivery. This fact has implications for introducing additional electronic services. Correctly choosing what services to impose on library customers, and what services to offer as value-added options, is fundamental to maintaining the credibility of libraries during these times of rapid change. 相似文献