共查询到20条相似文献，搜索用时 62 毫秒
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传统的查询扩展方法,不能从根本上消除用户查询意图与检索结果之间的语义偏差和用户查询的歧义性问题,而交互式查询扩展可以有效地帮助用户更快捷、精确地从海量的网络资源中找到所需信息,为用户提供更满意的搜索结果。综合运用文献调研和问卷调查法,从用户使用及需求情况、使用原因、评价及建议等维度对交互式查询扩展进行实证分析。提出操作方式简单化、查询扩展个性化、交互显示人性化、检索结果精确化、检索环境移动化是交互式查询扩展的研究重点和主要发展方向。 相似文献
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移动图书馆WAP和APP用户检索行为比较分析 总被引：1，自引：0，他引：1
[目的/意义] 对比用户在使用WAP和APP这两种方式访问移动图书馆时的检索行为,为移动图书馆的服务创新提供参考。[方法/过程] 通过对某高校图书馆OPAC系统移动端日志数据进行统计分析,从搜索会话、查询式、高频关键词以及检索方式等方面展开研究。[结果/结论] 发现用户更多地是使用WAP访问移动图书馆,相比之下,在使用APP访问移动图书馆时,用户更倾向于在短时间内进行较少的查询来结束搜索会话;使用这两种方式查询的高频关键词所属领域有很大的相似性,中文检索多集中在数学、管理学、经济学、社会学等领域;简单检索是用户访问移动图书馆时使用的主要检索方式,通过WAP访问的用户选择其他检索方式的比率要大于通过APP访问的用户。 相似文献
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针对大众标注系统中信息检索缺乏语义性的问题,引入本体,建立了基于系统专用本体的语义检索模型,包括7个功能模块:资源标注模块、标签推荐模块、提问处理模块、语义检索模块、结果处理模块、用户反馈处理模块以及本体构建和管理模块,阐述了各个模块的功能.详细分析了以查询扩展为基础的检索策略和过程.重点研究了系统专用本体的构建,提出一种通过分析标签间隐含的语义关系及WordNet辅助生成本体的方法,并进行了模拟实验验证. 相似文献
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考察在信息检索过程中用户以自然语言表述的查询语句中的词语使用情况。以一个信息需求描述颗粒度不等的查询表述语料库为素材,辅以汉语通用语料作为对照,通过词频以及词语的文本覆盖率等统计数据,按照是否需要在目标文本中直接或以其他形式出现,将查询表述语句中的词语区分为对汉语文本处理具有普遍意义的通用停用词、服务于信息检索表述用的专用停用词和与特定需求相关的信息内容词语。区分词语使用的不同性质,能为信息系统前端的自然语言查询处理增加一道剥离工序,防止将整个查询语句的分词结果全部作为检索项所造成的效率和准确率的退化。 相似文献
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针对当前书目检索过程中缺少检索建议与提示而影响检索性能的现状,进行检索建议与提示策略的研究。通过阐述检索行为的概念与属性、分析用户的检索心理,挖掘用户行为数据,并在此基础上实施访问OPAC网站、输入检索词、获得检索结果及选择检索结果等检索过程与行为的引导服务与查询帮助,从而较为准确地判断用户的查询意图,对用户的检索行为给出实时的、丰富的检索建议与提示,以期增强书目检索功能,提高系统的互动性,提升用户的查询体验。 相似文献
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在数字图书馆中进行信息检索是一件繁琐和乏味的工作,由于无法识别用户的检索个性化,导致信息检索的结果不尽如人意。我们在数字图书馆的信息检索系统中,将系统集中在查询个性化;特别地,我们处理结构化的检索使存储的原数据加入相关的数据库中,通过对用户描述文件里的用户偏好的分析,描述了查询重写规则在构建个性化检索中的作用。 相似文献
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查询背后的信息需求被定义为查询意图,搜索引擎可以根据不同的查询意图,提供多样性的服务,优化检索效果.查询意图的识别多被看成是一种分类问题,现有的大多数方法都基于查询串文本本身的特征和查询的用户点击数据特征.这两种方法存在如下的困难:对于查询串的文本特征,查询比较短,特征比较稀疏,要进行比较准确的理解会比较困难;对于用户点击特征,由于用户提交查询的长尾性分布,大多数查询的提交次数都是较少的,对于这些查询,要判别它们的意图是比较困难的.为了克服长尾查询上查询意图判断的不可靠问题,本文提出利用查询结果的相关性分数的分布作为特征来判断查询意图的方法.这种方法依赖查询结果的特征,比查询串本身的特征更加丰富;同时不依赖于用户的点击数据,因此可以克服长尾查询上的困难.结果表明,使用结果分数分布,可以提高意图判别的准确程度. 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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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
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《Slavic & East European Information Resources》2013,14(2-3):21-29
SUMMARY The authors discuss the development of the Slovak periodical press within its historical context and their expectations for its future. The article covers general characteristics of Slovak magazines and newspapers from World War II to 1989, and their later development since the Velvet Revolution up to the present. It also discusses the Slovak press outside of Slovakia from the late nineteenth century. 相似文献
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Nadia Zavorotna 《Slavic & East European Information Resources》2013,14(1-2):90-96
The author describes the Slavic Humanities Index, a bibliographic database of scholarly and cultural articles on subjects including history; literature; language teaching; linguistics; philosophy; ethnology; performing arts; and cultural, borderland, and regional studies. She discusses its development, its current form and functionality, and plans for the future. 相似文献
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《Slavic & East European Information Resources》2013,14(2-3):31-47
SUMMARY There are between fifteen and twenty U.S. libraries that collect publications from Central Asia, defined here as Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan and Uzbekistan. Collection development responsibility for these countries tends to rest with the Slavic selector, the Middle East selector, or both, divided by language. Vendors who can supply this material mostly also supply publications from other countries of the former Soviet Union. The author briefly discusses the history of collecting from this region and the results of a survey conducted in 2004. She presents evidence indicating that the main reason U.S. libraries are not receiving more books from the region is most likely because they are not being published, not because vendors are doing an inadequate job. 相似文献
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Library Journal's 2011 Ebook Penetration and Use in U.S. Libraries Survey testifies to e-books’ increasing popularity in academic libraries. This review tracked literature published from 2005 that focused on academic librarians’ best practices for acquiring, cataloging, maintaining, and promoting e-books at their institutions. Some of these practices include implementing trial accesses, considering institutional requirements, providing an e-book presence in the library catalog, monitoring usage statistics, and utilizing the library Web site for promotional efforts. 相似文献