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ABSTRACTAdding multiple sources of information in the display of Web search results may negatively affect users’ perceptual experience and information-seeking behavior. This claim was established by investigating the impact of different Web search compositions on users’ ability to extract specific information. In this article, we assumed that the quantity and order of different compositions (areas) in the Web search results page may contribute to individual’s ability to find information relevant to their search queries. An eye-tracking device was used to observe and compare the perceptual behavior of 14 users in an information-seeking task. The results showed that the use of different compositions in the display of Web results page significantly influenced users’ perceptual experience by reducing their attention to the organic results area. The quantity of these compositions was found to greatly increase the cognitive load of users when attempting to retrieve information from the organic area, which negatively affects their information-seeking performance. Our finding provides a rationale for further studies to consider the impact of quantity and order of Web page compositions on individuals’ perceptual attention and cognitive load in information-seeking task settings. 相似文献
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一种基于KDD的Web搜索引擎框架 总被引：7，自引：0，他引：7
随着Internet的迅猛发展 ,网上的信息急剧膨胀 ,如何高效、高质量地检索到用户所感兴趣的信息资源 ,是当前Internet资源发现的重要研究课题之一。本文将KDD的思想和方法引入Web搜索引擎 ,提出一种面向用户的检索覆盖面广、质量高的Web搜索引擎框架 ,并对其中的关键技术进行了探讨。 相似文献
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���绷����ͼ�����Ϣ��Դ����֯���� 总被引：58，自引：5，他引：53
主要论述网络环境下图书馆信息资源的构成及其现实馆藏和虚拟馆藏的组织管理方法;通过对几种搜索引擎的实际搜索效果进行比较,建议图书馆馆员加强网络信息资源的深度标引和评价工作,有针对性地建设网上Ｗｅｂ虚拟图书馆,提高网络环境下图书馆的信息服务质量。 相似文献
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《Journal of Web Librarianship》2013,7(2):80-95
Creating a learnable, effective, and user-friendly library Web site hinges on providing easy access to search. Designing a search interface for academic libraries can be particularly challenging given the complexity and range of searchable library collections, such as bibliographic databases, electronic journals, and article search silos. Library Web designers must decide whether to present users with a single search interface—one that searches across content silos by default—or to offer an interface that exposes the various silos available. Designers must also contend with the user's entire search experience and determine how search should appear on the library home page as well as in global navigation systems. In the spring of 2010, the North Carolina State University Libraries sought to answer search design questions for an upcoming Web site design effort. The Libraries evaluated two different search interfaces to determine whether a tabbed search approach with options to pre-select silos is an effective design for end users. Findings show that a tabbed search interface is an effective design device for presenting multiple silos. This study outlines the methods the North Carolina State University Libraries used to conduct usability testing as well as observations, findings, and recommendations about effective design of search on academic library Web sites. 相似文献
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《The Journal of Academic Librarianship》2020,46(4):102156
This scoping review highlights the characteristics, assessments and technologies used to describe, improve and promote one-to-one research consultations as a mode of research support and instruction in academic libraries. A search for relevant studies was conducted using LISTA, LISA, ERIC, Scopus and Web of Science, limiting to empirical evidence or studies outlining the use of technology within library practice, published from 2013 to current, in the English language. Supplemental search methods included a grey literature search, handsearching, and cited reference searching. From 2268 records, 43 studies were identified for inclusion. Of these, 17 studies described using consultations in the delivery of information literacy instruction, 33 evaluation studies reported on student, faculty, and librarian outcomes, and 15 articles discussed the use of technology. Users reported an overwhelming positive experience while mixed learning outcomes were seen in performance assessment studies. The assessment methods and uses of technology outlined in this review can be used by librarians to inform service delivery and provide evidence of the value and impact of research consultations on the academic mission of the library and its institution. 相似文献
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Internet声像信息资源及其利用 总被引：1，自引：0，他引：1
随着Ｉｎｔｅｒｎｅｔ 网在我国的应用越来越普遍以及多媒体技术的迅速发展,如何利用网上的声像信息资源已变得十分重要。本文简要地介绍了Ｉｎｔｅｒｎｅｔ 网声像信息的类型,并对其搜索方法和音、视频播放工具进行了探讨 相似文献
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基于资源发现领域的元数据(Metadata)标准 总被引：15，自引：1，他引：14
贺亚锋 《现代图书情报技术》2000,16(6):60-61
Metadata 作为组织和检索Web 信息资源的数据, 是网络搜寻的关键因素之一, 本文以资源发现领域的元数据标准为研究对象, 探讨了该领域元数据标准的功能、类别和Dublin Core 与MARC 的关系。 相似文献
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《Journal of Web Librarianship》2013,7(4):375-376
Libraries today face an increasing challenge: to provide relevant information to diverse populations with differing needs while competing with Web search engines like Google. In 2009, a large group of libraries, including the University of Nebraska-Lincoln Libraries, joined with Innovative Interfaces as development partners to design a new type of discovery tool. The concept of information portals best supports the research and instructional needs of our communities by organizing and presenting information that incorporates licensed databases, text, multimedia, and other relevant sources. The discovery tool under examination by University of Nebraska-Lincoln and Encore integrates searches of the catalog, locally created full-text and image sources, and articles from licensed databases with navigation options that facilitate narrowing and expanding search results. This information portal development is an ongoing process with the goal of providing a tool that is as easy to use as Web search engines and that preserves the quality that library users expect. This article explores the requirements for an information portal and describes the challenges University of Nebraska-Lincoln faced when implementing Encore. Statistics from the initial implementation are presented, along with recommendations for future usability studies to evaluate where additional improvements should be made. 相似文献
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网络检索系统研究进展综述 总被引：3，自引：0，他引：3
Web上大量的异构、分布、动态的信息造成了“信息过载”。如何在传统信息检索技术的基础上开展针对Web的信息检索工作已经成为一项重要的研究课题。笔者对近年来网络检索技术进行综述,从网络检索系统分类、网络信息获取、网络信息检索相关技术、网络检索方法等方面较全面地介绍了这一领域的发展概况,并对未来网络检索系统的发展趋势提出展望。 相似文献
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ISI Web of Knowledge跨库检索功能与操作技巧 总被引：3，自引：0，他引：3
ISI web of Knowledge是新一代的学术信息资源整合体系，是Web of science的最新升级平台。本文主要介绍了这一体系的跨库检索功能及其操作技巧。 相似文献
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基于语义网技术构造知识服务系统 总被引：7，自引：0，他引：7
语义网的兴起,为知识服务系统的发展提供了巨大的动力。而知识管理的思想运用于语义网建设,又将为用户提供基于知识的Web服务。因此,语义网技术作为下一代Web的核心技术,知识服务作为信息服务的发展趋势,两者的相互结合将是可行而必要的,肯定会为知识服务的研究与发展开辟新的道路。本文阐述了语义网技术在知识服务中的角色,探讨了语义网与知识服务系统结合的应用前景,并论述了基于语义网技术构造知识服务系统的主要实现模式 相似文献
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Anchor texts complement Web page content and have been used extensively in commercial Web search engines. Existing methods
for anchor text weighting rely on the hyperlink information which is created by page content editors. Since anchor texts are
created to help user browse the Web, browsing behavior of Web users may also provide useful or complementary information for
anchor text weighting. In this paper, we discuss the possibility and effectiveness of incorporating browsing activities of
Web users into anchor texts for Web search. We first make an analysis on the effectiveness of anchor texts with browsing activities.
And then we propose two new anchor models which incorporate browsing activities. To deal with the data sparseness problem
of user-clicked anchor texts, two features of user’s browsing behavior are explored and analyzed. Based on these features,
a smoothing method for the new anchor models is proposed. Experimental results show that by incorporating browsing activities
the new anchor models outperform the state-of-art anchor models which use only the hyperlink information. This study demonstrates
the benefits of Web browsing activities to affect anchor text weighting. 相似文献
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TRS全文检索系统在吉林大学图书馆的应用 总被引：11，自引：0，他引：11
孙静宇 《现代图书情报技术》2002,18(3):88-90
网络及信息技术的发展为图书馆数字化文献资源建设提供了前所未有的契机， 通过Web网站提供功能强大、方便快捷的搜索引擎服务，使读者检索馆藏数字化信息资源，成为各馆数字化建设进程中首要解决的问题。吉林大学图书馆在本馆网络数据库的建设中，基于TRS全文数据库、搜索引擎系列产品技术全方位开发Web网站，使TRS成为本馆Web网站建设及开发的核心技术。本文简要介绍了吉林大学图书馆应用TRS全文检索系统的建站过程、使用经验及建设成果。 相似文献
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网络信息移动搜索作为传统互联网搜索的进一步延伸,可为用户提供随时随地的个性化信息服务.在界定网络信息移动搜索的概念和特点后,重点对其整体框架和搜索技术机理进行探索. 相似文献
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WWW 检索工具的原理和实践 总被引：12，自引：1，他引：11
本文在总结WWW 上信息查找方法和原理的基础上, 归纳出基于超文本的信息查找和基于检索工具的信息查找两种方法。着重描述了WWW 检索工具的技术指标和特点, 最后介绍了一个著名的WWW 检索工具WebCrawler 的功能和使用步骤。 相似文献
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Stephanie Edgerly Emily K. Vraga Bryan McLaughlin German Alvarez JungHwan Yang Young Mie Kim 《广播与电子媒介杂志》2013,57(4):542-561
Using an experimental design coupled with Web-tracking technology, this study explores 2 factors that influence levels of congruent information gathering online. The first factor compares the navigational structure of 2 distinct Web pages—the more open, user-directed search engine versus the organized, assembled structure of a portal Web page. The second factor tests the role of goals for information seeking—telling subjects they will soon engage in a discussion with another person who either disagrees with their viewpoint, agrees, is undecided, or no discussion treatment. Results indicate both experimental factors independently contribute to selectivity in online information seeking. 相似文献
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在Web2.0环境下,从集成化的角度对信息行为进行研究已逐渐成为新的热点。信息行为集成化研究框架包括时空环境、多学科、研究方法和多个子环节四部分,是一种从宏观视角对微观层面的信息行为进行研究的框架。在时空环境层面,需要定位于人类进化的历程和多层次的环境与情境中进行分析;在学科层面,应以情报学为核心,以心理学为辅助,以社会学和人类学为宏观背景进行综合分析;在研究方法层面,应综合应用质性方法与量性方法;在构成层面,信息搜寻/搜索/检索、信息组织、信息利用三个子环节在信息共享的促进下循环发展。对信息行为进行深入研究应坚持多元化和集成化的原则。 相似文献
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以中国期刊全文数据库(CNKI)、美国科学情报研究所(ISI)开发的WebofScience以及科学文摘(INSPEC)为信息源,对近30年国内外数字图书馆研究文献在时间分布、著者、主题、期刊分布及引证文献五个方面进行统计、聚类、对比分析并作比较研究,找出国内外在资金、技术、人才等方面的差距,深入分析国内研究上存在的问题并提出相应的建议,以期为推动和促进我国数字图书馆健康发展提供数据支撑和理论支持。 相似文献