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1.
Ｗeb检索与联机检索 总被引：7，自引：0，他引：7
介绍了部分专业检索人员对Ｗeb检索与联机检索的看法、以及一项善于联机与Ｗeb搜索引擎两者检索效果的对比笥研究，鉴于目前大量传统的收费情报可通过Ｗeb免费获取，作者着重讨论了如何在Ｗeb上免费检索各类传统情报，并指出Ｗeb免费检索传统情报对联机检索带来的冲击。 相似文献
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Carol A. Leibiger 《Behavioral & Social Sciences Librarian》2013,32(4):187-222
Googlitis, the overreliance on search engines for research and the resulting development of poor searching skills, is a recognized problem among today's students. Google is not an effective research tool because, in addition to encouraging keyword searching at the expense of more powerful subject searching, it only accesses the Surface Web and is driven by advertising. American higher education unwittingly fosters the use of search engines in research by emphasizing results rather than process. Academic librarians emulate teaching faculty in their reliance on lectures, and their course-related instruction is limited in its effectiveness because it is constrained to one-shot, lecture-driven sessions. A more effective way to teach research is to collaborate with faculty via problem-based and project-oriented learning tasks that incorporate authentic discipline-specific information finding and critical thinking into assignments. 相似文献
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The emerging Web 2.0 social software: an enabling suite of sociable technologies in health and health care education 总被引：2，自引：0，他引：2
Web 2.0 sociable technologies and social software are presented as enablers in health and health care, for organizations, clinicians, patients and laypersons. They include social networking services, collaborative filtering, social bookmarking, folksonomies, social search engines, file sharing and tagging, mashups, instant messaging, and online multi-player games. The more popular Web 2.0 applications in education, namely wikis, blogs and podcasts, are but the tip of the social software iceberg. Web 2.0 technologies represent a quite revolutionary way of managing and repurposing/remixing online information and knowledge repositories, including clinical and research information, in comparison with the traditional Web 1.0 model. The paper also offers a glimpse of future software, touching on Web 3.0 (the Semantic Web) and how it could be combined with Web 2.0 to produce the ultimate architecture of participation. Although the tools presented in this review look very promising and potentially fit for purpose in many health care applications and scenarios, careful thinking, testing and evaluation research are still needed in order to establish 'best practice models' for leveraging these emerging technologies to boost our teaching and learning productivity, foster stronger 'communities of practice', and support continuing medical education/professional development (CME/CPD) and patient education. 相似文献
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《Library & information science research》2005,27(2):249-263
The problem of language in Web searching has been discussed primarily in the area of cross-language information retrieval (CLIR). However, much CLIR research centers on investigation of the effectiveness of automatic translation techniques. The case study reported here explored bilingual user behaviors, perceptions, and preferences with respect to the capability of the Web as a multilingual information resource. Twenty-eight bilingual academic users from Myongji University in Korea were recruited for the study. Findings show that the subjects did not use Web search engines as multilingual tools. For search queries, they selected a language that represents their information need most accurately depending on the types of information task rather than choosing their first language. Subjects expressed concerns about the accuracy of machine translation of scholarly terminologies and preferred to have user control over multilingual Web searches. 相似文献
5.
《Journal of Web Librarianship》2013,7(4):267-285
This article summarizes the author's dissertation regarding search strategies of millennial undergraduate students in Web and library online information retrieval systems. Millennials bring a unique set of search characteristics and strategies to their research since they have never known a world without the Web. Through the use of search engines, they have come to expect that searches can be completed using an easy, single search box that produces complete articles on just about any topic. However, the reliability and quality of much of the information on the Web is questionable. Conversely, information that resides in library information retrieval systems is often of high scholarly content, but there is not a single, user-friendly system for millennials to use. A case study investigation was conducted at the State University of New York at Oswego, a public undergraduate university in Central New York. The goal of the study was to identify the search strategies of a sampling of millennial undergraduate students in both Web information retrieval systems and library information retrieval systems in order to expand upon existing theories about millennials and to suggest interface design enhancements, which could make online library information retrieval systems easier for millennials to use. The findings recommend improving database search functionality, such as natural-language searching, spell-checking, and uniform full-text wording and placement. Results also suggested that increasing the availability of full-text articles would contribute to millennials’ use of library information retrieval systems. 相似文献
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Atlas MC 《Medical reference services quarterly》2001,20(1):11-25
Physicians are becoming aware of the World Wide Web as a resource for medical information. In spring 1999, first-year students at the University of Louisville's School of Medicine were given an assignment to review and evaluate Internet search engines and directories, medicine-specific search engines and meta lists, and health-related Web sites. Students found that general search engines were easier to learn and use and produced better results than either meta medical sites or medicine-specific search engines. Students were very severe in judging the quality of health-related Web sites. Our students' impressions are compared to those of physicians in similar studies. Solutions to the problems of searching the Web for health information are reviewed. 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
8.
[目的/意义] 针对当前我国网络用户的健康信息检索行为, 探索利用中文搜索引擎的健康信息检索规律, 为完善健康搜索引擎和网站建设提供参考。[方法/过程] 基于搜狗搜索引擎的大规模查询日志, 采用日志挖掘的方法, 从查询行为和点击行为两个角度对网络用户的健康信息检索行为进行研究。查询行为的研究指标包括会话层(会话长度、用户重复查询), 查询串层(查询串长度、重复查询)和词项层(高频词汇, 主题分类);点击行为的研究指标为点击位置和点击内容。[结果/结论] 健康相关查询的重复率较高, 提示相关网站可缓存高重复率查询串的返回结果;大众关注的热点领域为疾病、保健、母婴、医疗机构与美容整形, 提示网站的导航设计注意导航方向;用户更偏爱使用问答型平台, 提示网站设计者应更加关注与用户间问答型的互动模式。 相似文献
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搜索引擎的智能检索机制 总被引：6，自引：0，他引：6
探讨搜索引擎的一些智能检索机制,包括基于概念匹配的检索,对网络信息进行深层次挖掘,分析并预测用户的信息需求和提供个性化、专业化的检索服务。 相似文献
10.
建立整合的知识结构贮藏库(英文) 总被引：2，自引：0，他引：2
不同的知识库对概念的语义与词义的表达都会不同。用户要在检索中使用它们就会有困难。该论文介绍了一个知识贮藏库的整合模型。这个模型全部利用开放式软件(Open-SourceSofware)以及可扩展标记语言(XML)和概念分类体系(Ontologies)的技术建成。它提供了知识库之间的知识结构映射,也为用户提供图表式界面以方便用户对知识库整合的直接参与。由于这一模型是以用户为中心,以知识结构为重点,它将为建立下一代的知识网络提供一个范例。 相似文献
11.
The number of Web users whose first language is not English continues to grow, as does the amount of content provided in languages other than English. This poses new challenges for actors on the Web, such as in which language(s) content should be offered, how search tools should deal with mono- and multilingual content, and how users can make the best use of navigation and search options, suited to their individual linguistic skills. How should these challenges be dealt with? Technological approaches to non-English (or in general, cross-language) Web search have made large progress; however, translation remains a hard problem. This precludes a low-cost but high-quality blanket all-language coverage of the whole Web. In this paper, we propose a user-centric approach to answering questions of where to best concentrate efforts and investments. Drawing on linguistic research, we describe data on the availability of content and access to it in first and second languages across the Web. We then present three studies that investigated the impact of the availability (or not) of first-language content and access forms on user behaviour and attitudes. The results indicate that non-English languages are under-represented on the Web and that this is partly due to content-creation, link-setting and link-following behaviour. They also show that user satisfaction is influenced both by the cognitive effort of searching and the availability of alternative information in that language. These findings suggest that more cross-language tools are desirable. However, they also indicate that context (such as user groups’ domain expertise or site type) should be considered when tradeoffs between information quality and multilinguality need to be taken into account. 相似文献
12.
基于文档聚类的Web辅助浏览研究 总被引：2，自引：0，他引：2
目前的搜索引擎在方便人们查询的同时也存在不足 ,由于它们并非面向某个特定用户服务 ,所以并不能反映用户的个性化需求 ,查询得到的信息往往还是有大量的冗余。为此本文提出了一种基于文档聚类的网络辅助浏览技术。首先给出了模糊概念图的模型来描述词语间的关系 ,然后将Web文档转化为矢量文档表示 ,利用基于K Means聚类方法对矢量文档进行聚类 ,通过确认最终抽取出用户兴趣模式 ,从而辅助用户实现个性化搜索 相似文献
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14.
本文报告了一项对国外经济管理学科教学支持资源导航工具进行的调研。在对这些教学支持类网站进行概述的基础上，本文选取了四个使用率高、影响大的核心网站进行了特点分析。 相似文献
15.
《图书馆管理杂志》2013,53(1-2):263-324
SUMMARY The quantity of legal and government information accessible through online delivery has increased tremendously. Information technology has revolutionized the way much of this information is disseminated by government and the way that researchers access it. The increase in publication can be attributed to two factors: the government's efforts to create a virtual depository of publications and the capability of Internet technology to provide personalized “feeds” of topic-specific information through Web logs and RSS news aggregators. In this article, finding tools, primary and secondary sources of legal and regulatory government information will be identified and described including search engines and guides. 相似文献
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网上免费学术信息的开发与利用 总被引：6，自引：0，他引：6
本文在对网上免费学术信息资源的定义与分类进行界定基础上，重点讨论获取网上免费学术信息资源的策略与工具。论文把这些检索工具分为两类：一类是通用搜索引擎：包括其提供的特殊功能和通过检索式构造来获得所需信息；一类是专门用来搜索免费学术信息的工具。 相似文献
18.
《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
19.
Online programming discussion forums have grown increasingly and formed sizable repositories of problem-solving solutions. In this paper, we investigate programming learners’ information seeking behaviors in online discussion forums, and provide visual navigational support to facilitate information seeking. We design engines to collect students’ information seeking behaviors, and model these behaviors with sequence pattern mining techniques. The results show that programming learners indeed seek for information from discussion forums by actively search and read progressively according to course schedule topics. Advanced students consistently perform query refinements, examine search results and commit to read, however, novices do not. Finally, according to the lessons learned, we propose, design and evaluate Personalized Information Seeking Assistant system to help query refinement by summarizing the search results and to provide social-based browsing history. Findings suggest that paying attention to the query history may lead to further reading events, which subsequently resulting in potential learning activities. 相似文献
20.
《The Reference Librarian》2013,54(79-80):57-65
Summary Digital reference is an important research area with the potential to enhance information delivery to library patrons. The process of digital reference involves the challenges and problems of an interactive computer-mediated reference interview. Related studies of mediated online searching have identified the major tasks during a mediated online search. The search intermediary's tasks included gathering information on the information need, previous searches on the topic by the information seeker, search terms and strategies, database selection, search procedures, system's outputs and relevance of retrieved items, and the number of topics to be searched. The information seeker's tasks include providing information to the search intermediary on their topic, discussing their previous information seeking and evaluating the online search output. Models of digital reference interviews need to include more complex information seeking behaviors, such as successive searching and multitasking. Further research is needed to extend our understanding of digital reference processes. 相似文献