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丁一 《现代图书情报技术》2005,21(6):26-29
Web 信息检索（Information Retrieval）技术研究是应用文本检索研究的成果，它结合Web图论的思想，研究Web上的信息检索，是行之有效的Web知识发现的途径。传统HITS方法所获得的信息精确度相当低，而PageRank作为一通用的搜索方法，不能够应用于特定主题的信息获取。在充分分析了PageRank、HITS等现有算法和Web文档的相似度计算方法的基础上，提出了Web上查询特定主题相关信息发现的RG-HITS算法。它结合了Web超链接、网页知识表示的信息相关度以及HITS方法来搜索Web上特定主题的相关知识。 相似文献
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《Journal of Web Librarianship》2013,7(1):19-35
A library's Web site is well recognized as the gateway to the library for the vast majority of users. Choosing the most user-friendly Web architecture to reflect the many services libraries offer is a complex process, and librarians are still experimenting to find what works best for their users. As part of a redesign of the Oregon State University Libraries’ Web site, entry points for specific user groups were created. One of these user groups was graduate students. The purpose of this study was to explore the ways other academic libraries design their Web sites for particular user groups, specifically graduate students, in order to determine how the Oregon State University Libraries Web site compared to peer institutions. This study analyzed 112 Association of Research Libraries’ Web sites and 26 Oregon academic libraries’ Web sites to determine the availability of resources and services specifically promoted to graduate students. Since graduate students may view the library Web site through the lens of new student, researcher, or instructor, Web sites were also examined to see if sites were created with any or all of these roles in mind. Nearly a quarter of Association of Research Libraries' Web sites that were examined contained a link on the homepage for graduate students, and another 20 percent provided graduate-student information at a lower level in their site hierarchy. A majority of sites had events, subject guides, or course guides for graduate students. Information for graduate students was typically framed in the context of graduate students as researchers. Ideas and examples are given for ways to improve Web site design to better serve this user group. In order to provide improved services to these students, future studies will explore what graduate students need from academic libraries and the ways these students conduct themselves in their various roles of researchers, instructors, and new students. 相似文献
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本文针对数字图书馆建设过程中传统数据仓库技术应用的问题,在简单介绍数据仓库技术和Web技术的基础之上,介绍了两种技术结合的产物——Web数据仓库系统。文中主要讨论了它的体系结构、特点以及安全性等问题,并介绍了它的主要应用领域。 相似文献
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图书馆移动阅读服务的新契机:HTML5和CSS3 总被引：2，自引：0，他引：2
针对移动阅读环境和用户需求的变化与现有移动Web标准规范如WAP、WML、XHTML-MP对移动Web发展的不适应,以及图书馆在旧的移动Web标准规范框架下的移动阅读服务在内容、应用架构、服务模式方面的诸多困境,用文献调研和实验验证的方法研究新的Web标准规范HTML5和CSS3的新特性和功能及其相对应旧标准的优点,从HTML5和CSS3对图书馆上游的数字出版领域和图书馆下游的用户需求的直接影响的角度,探讨HTML5和CSS3为图书馆移动阅读服务带来的新契机,得出HTML5和CSS3可使图书馆的移动阅读服务在内容、应用架构、服务模式方面得到提升和变革的结论。 相似文献
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《Journal of Web Librarianship》2013,7(1):37-54
Web site usage statistics are a widely used tool for Web site development, but libraries are still learning how to use them successfully. This case study summarizes how Morris Library at Southern Illinois University Carbondale implemented Google Analytics on its Web site and used the reports to inform a site redesign. As the main campus library at a research university with about 20,000 undergraduate and graduate students, the library included resources from multiple library departments on a single site. In planning the redesign, Morris Library's Virtual Library Group combined usage reports with information from other sources, such as usability tests and user comments. The Virtual Library Group faced barriers to interpreting and applying the usage statistics in the site redesign, including some that were specific to the library's implementation of the Google Analytics tool and some limitations inherent with Web usage statistics in general. Some key barriers in applying the usage statistics to a redesign included sifting through data that did not have implications for the site redesign, interpreting the implications of usage numbers for the site redesign, and balancing competing interests within the library. Nevertheless, the usage statistics enabled the Virtual Library Group to make better decisions by providing a source of factual information about the site's use rather than relying on staff members’ opinions and conjectures. 相似文献
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阐述Web2.0的定义，并结合相关教学实例，归纳出Web2.0的四点核心思想:参与体系、共同协作、去中心化、长尾效应，分析其对高校文献检索课程教学活动的影响;介绍三种最常见的Web2.0技术:Blog、RSS、Wiki以及它们在文献检索教学活动中的创新应用。 相似文献
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《Journal of Web Librarianship》2013,7(3):239-262
Although the library's Web site has become a standard tool for seeking information and conducting research in academic institutions, there are a variety of ways libraries approach the often challenging—and sometimes daunting—process of Web site development and maintenance. Three librarians at Western Michigan University explored issues related to this topic by conducting a Web-based survey, which was sent to two librarians—Web services and reference/public services—at 149 academic institutions. Survey findings are discussed, including references to Web departments and committees, priority setting, Web authoring, soliciting input, outsourcing, content management systems, redesigns, and user involvement. The participants’ insights regarding the greatest challenges and what seems to be working or not working well are also outlined, in addition to the authors’ suggestions for future research in this area. 相似文献
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《Journal of Informetrics》2014,8(3):683-692
This paper explores a possible approach to a research evaluation, by calculating the renown of authors of scientific papers. The evaluation is based on the citation analysis and its results should be close to a human viewpoint. The PageRank algorithm and its modifications were used for the evaluation of various types of citation networks. Our main research question was whether better evaluation results were based directly on an author network or on a publication network. Other issues concerned, for example, the determination of weights in the author network and the distribution of publication scores among their authors. The citation networks were extracted from the computer science domain in the ISI Web of Science database. The influence of self-citations was also explored. To find the best network for a research evaluation, the outputs of PageRank were compared with lists of prestigious awards in computer science such as the Turing and Codd award, ISI Highly Cited and ACM Fellows. Our experiments proved that the best ranking of authors was obtained by using a publication citation network from which self-citations were eliminated, and by distributing the same proportional parts of the publications’ values to their authors. The ranking can be used as a criterion for the financial support of research teams, for identifying leaders of such teams, etc. 相似文献
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熟练运用数据库检索系统有利于期刊编辑快速把握学科的发展动态.以核科学与技术科学为例,说明利用Journal Citation Reports和Web of Science数据库可以了解某一领域关注度较高的期刊,科研工作领先的国家,研究工作突出的作者团队,便于编辑快速把握学科发展动态,以便约得高质量的稿件. 相似文献
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《Journal of Web Librarianship》2013,7(3):217-237
Library Web sites must compete against easy-to-use sites, such as Google Scholar, Google Books, and Wikipedia, for students’ time and attention. Library Web sites must therefore be designed with aesthetics and user perceptions at the forefront. The Music and Performing Arts Library at Urbana-Champaign's Web site was overcrowded and in much need of a user-focused redesign. This article presents a usability study that compared participants’ use of the old site versus the new site to determine if performance improved on the redesigned site. Participants were asked to complete library-related tasks on both the old Web site and on the redesigned Web site to determine if they could both complete more tasks and complete tasks more quickly on the new site. Participants showed a marked improvement on the new site, and their “think-out-loud” responses to the tasks helped further improve site design and wording. Participants were also surveyed about their perceptions of ease of use and navigation on the old and new sites, and in general, the new site was preferred by participants and seen as a great improvement. Future studies will aim to further involve students and faculty in addressing terminology and site organization. 相似文献
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This article examines approaches to creating museum Web sites that offer quality experiences to online users. In six case studies, museum Web developers in the U.S. and Canada describe how they have made the most of available human and financial resources. The development history of each site offers insights into the origins of a design and its subsequent versions, and describes the influence of institutional missions, philosophies, success indicators—and financial and human resources, the most crucial factors. The study found considerable variety in the backgrounds, expertise, titles and training of people developing Web sites within institutions. Web teams developed “exchange” experiences through online discussion, and by creating links among users, or between museum staff and users. In three case studies, Web sites encouraged visitors to cycle between online and on‐site museum visits. Web developers describe using quantitative and qualitative online audience research strategies. WebTrendsTM software has enabled Web teams to report complex log analyses. Creating online experiences in partnership with users is the intention of Web developers. 相似文献
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《Journal of Web Librarianship》2013,7(2):190-214
In the earlier years of the Web, libraries focused on moving services online and building digital collections, but in recent years, libraries have emerged as key players in the world of digital publishing. Librarians possess all of the necessary skills to act as digital publishers; they join the ranks of many others who have discovered the barriers around digital publishing are lower than ever. Library-based digital publishing solutions have matured to a point that the act of digital publishing could—and should—become a new core competency for the library profession. To explore this hypothesis, the researchers offer a working definition of digital publishing and assess the key roles that traditional publishers have historically offered over time. They find that librarians already possess the requisite skills to become digital publishers, and the collaborative culture of the library profession is a strength for this new role. Examples of digital publishing from two libraries at the University of California-Berkeley offer a proof of concept. Services at these libraries include the conceptualization of overall Web site strategies, a content plan that emphasizes distinctive and original material, and special projects that promote digital publishing at the local level, even as they take advantage of campus- or system-level services. Researchers find that offering library-based Web publishing services can reinforce overall information management programs and also advance the status of libraries within their respective host organizations. The comparative ease of digital publishing has opened an opportunity for librarians to follow the user as they use the Web in creative ways. 相似文献
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《Journal of Web Librarianship》2013,7(4):145-161
The Invisible Web—defined as Web information that cannot be found by using general-purpose search engines—has been studied primarily as an access issue. In this article, the authors consider, for the first time, the economic and political implications of the Invisible Web. The article is divided into two parts; the first looks at the “open” Web, accessible through URLs, while the second delves into the Dark Web, hidden behind veils of anonymity. The two main questions asked are: How is the Invisible Web shaped by economic and political factors and how, in turn, does the Invisible Web shape those circumstances? With the answers to these questions, the authors hope to bring more awareness of the Invisible Web to the information literacy classroom. 相似文献
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Web内容挖掘在数字图书馆中的应用 总被引：3，自引：1，他引：3
Web信息是数字图书馆数字资源的重要来源，文章详细阐述了对Web内容中的文本信息的挖掘，包括：文本自动摘要、文本分类和文本聚类。在挖掘过程中基于用户需求和用户特征，针对文本分类，重点分析了分类过程和在数字图书馆中的应用；针对文本聚类，介绍两种基本聚类原理以及与文本分类的不同之处，重点论述其在数字图书馆中如何应用。最后提出内容挖掘与用户挖掘的结合更有助于服务用户。 相似文献
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全立新 《现代图书情报技术》2007,2(6):29-32
以不动点相关理论为基础，采用数据挖掘和概率统计的方法，对Web服务行为约束和概率统计语义的问题进行研究和分析。针对传统定性描述调用关系的不足，给出服务调用关系定量描述的方法，并给出Web服务间调用的不动点函数及相应算法。实验证明，此方法对Web服务发现是有效的。 相似文献
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《Journal of Web Librarianship》2013,7(4):299-321
The transition to a new architecture and design for an academic library Web site does not always proceed smoothly. In this case study, a library at a large research university hired an outside Web development contractor to create a new architecture and design for the university's Web site using dotCMS, an open-source content management system. The library participated in the design and development process along with other campus units. Because the university-wide process focused on marketing the university to prospective students, parents, and donors, the contractor's fact-finding process focused on how the library's site design could incorporate Web 2.0 technologies. The resulting library Web site showcased Web 2.0 technology more than it provided users with access to library resources. The library's users quickly communicated their dissatisfaction and confusion, which led to some immediate changes and a commitment to redesign the site based on expressed and demonstrated user needs. The library then hired another contractor to conduct iterative usability testing on both the new site and prototypes for a redesigned version. The testing showed that Web 2.0 technology that does not meet existing user needs creates obstacles for both novice and experienced users. In collaboration with the university's information technology unit, the library developed and launched a revised Web site, which helped users connect to the resources they needed. In the upgrade, Google Search Appliance replaced the native dotCMS search functionality. The authors of this case study demonstrate that libraries may need to advocate for different Web design priorities than those used at the university-wide level and that working with outside contractors presents different challenges and opportunities depending on the contractor's hiring unit. These experiences also demonstrate that libraries can do a better job learning about their users when they lead the fact-finding process. Following these experiences, the library committed to conducting iterative usability testing on a regular basis. 相似文献
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