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1.
《Library & information science research》2023,45(1):101222
Searches with learning intent typically require the users to interact with the searching environment and perform knowledge acquisition features such as scan, read, and process the online content to fulfill their information needs. To capture indicators from searching behaviors that could account for the knowledge gained during a Web search, a qualitative study was performed using the Concurrent Think-Aloud protocol to observe the mechanisms of transfer and map knowledge flows during 78 search sessions. Findings indicate evidence of transfer of learning in the form of sixteen online information searching strategy indicators. This research aids the understanding of how knowledge is gained during search sessions and how to identify behaviors that could indicate that learning has occurred, which could be used to represent knowledge gain on Web search engines. In this way, it can aid search engines to become not only better tools of searching, but also tools of learning. 相似文献
2.
This paper provides an overview of the research into current medical vocabularies and their impact on searching the Web for health information. The Web provides growing opportunities for laypersons to gain knowledge about specific health conditions, though research to date has been incomplete. Many studies have examined aspects of controlled medical vocabularies. Other studies have examined aspects of medical Web searching vocabularies. In this context, there is a growing need to examine more closely laypersons' Web queries using controlled medical vocabularies that were designed to serve the needs of medical professionals. It may be the case that the average consumer of Web health services is not able to use correct medical terminology, and may not be able to choose analogous or synonymous terms from a search result list. Our review suggests a growing need for studies to examine the current applicability of controlled medical vocabularies as well as alternatives to semantic query by Web search engine users. 相似文献
3.
《Library & information science research》1998,20(1):5-21
Researchers in the behavioral and social sciences, particularly psychology, are beginning to conduct laboratory experiments on the World Wide Web. The Web venue offers conveniences that are apparent to market researchers and academic investigators, who have used the Web extensively for survey research. Like traditional experimental researchers. Web experimenters must assure the reliability and inferential validity of their experiments to determine whether a causal relationship exists between independent and dependent variables. In research design and implementation, therefore, Web experimenters must avoid the many artifacts of the experimental situation that threaten internal validity, construct validity, and external validity. This article discusses the application of methodological techniques to social science Web experiments and suggests topics in library and information science most conducive to research on the Web. 相似文献
4.
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
5.
《Government Information Quarterly》2000,17(3):243-267
This study assesses the effectiveness of New Zealand government Web sites in providing equitable and appropriate access to government information to all citizens. A range of government Web sites was evaluated, and visitors to approximately half of these sites were surveyed to determine their perceptions of the effectiveness of the sites. Results show that there are several key issues for the government to address in formulating effective policy for government Web sites. These include the need for: a clear statement of purpose; good meta-data; good contacts for feedback and update of information; clear statements and adequate provision for confidentiality and privacy of personal data, liability, and copyright; access for disabled users; availability of publications in both electronic and print formats. Key issues to emerge from the user survey focus on the need for better search engines, indexes, and site maps to help people find out quickly if the information they are wanting is likely to be there, and to locate it. Users also need to be assured that the information on government Web sites is accurate and up-to-date. The authors concluded that there is a major gap in government policy emerging from this research that needs urgently to be addressed. 相似文献
6.
《Library & information science research》1999,21(2):153-172
Traditional information storage and retrieval methods used by library professionals over the last century have much to offer in the digital environment, particularly when they are combined with recent technology. A device, called Knowledge Class, was developed as a framework to integrate information organizing methods and advanced Web technology. Knowledge Class facilitates information organization based on hierarchical structures similar to those used in thesauri and classification schemes. Furthermore, it adds values to the list of hierarchical terms through built-in vocabulary controlled and pre-stored search strategies. It is coupled with an interactive graphical interface with both dynamic and static links to search engines and related Web sites. Knowledge Class was designed to be both an information-organizing device and an information access tool. The design process discussed in this article represents a new thinking on how to respond to the challenges of organizing and accessing the wealth of information on the Web. 相似文献
7.
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
8.
9.
This paper examines the way in which Taiwan is connected to on the World Wide Web in South Korea. The Web may represent a new channel for the communication among a global society's members and a reflection of international relations. Thus, it is necessary to explore the distribution of relations formed and maintained on the Web and the contents of those relations as well. This paper traced South Korean Web pages hyperlinking pages hosted in Taiwan, using a search engine. The context in which Taiwan appears in South Korean pages was also examined. Specifically, the structure of hyperlink connectivity from South Korea and Taiwan was analyzed. It was found that the hyperlink network was very sparsely connected in terms of the number of South Korean Web pages hyperlinking to the pages of the other country. The contents of hyperlink-connected information were categorized and analyzed. The most often occurring content category was ‘Computers & Internet’ in Taiwan. This suggests that South Korean Web users including organizations are more interested in computer-related products in Taiwan than any other things. The implication of this paper is to examine the state and form of international information flow from South Korea to Taiwan based on the patterns of hyperlink relations inscribed on South Korean Web pages and the type and content of information. 相似文献
10.
网络用户信息获取语言使用行为研究 总被引：7，自引：1，他引：6
以网络搜索中用户信息获取习惯为研究对象,旨在对网络搜索中的基本词汇现象及其认知与利用进行总体把握性质的研究。主要使用网络问卷调查方法,辅以用户对比实验所得到的结论进行比较分析,得出在Web2.0标记、浏览中分类语言及其呈现方式、搜索词汇来源与类型、系统提示相关词等方面的研究结论：标签已经在Web2.0中有着极大的影响力;用户浏览时依赖分类语言,查询时对系统提示的相关词亦有较强认知;专指度较高的搜索词汇更容易在网络搜索中取得较好的效果。对于这些特征的把握,有助于各种网络获取服务的改善。 相似文献
11.
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
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
13.
网络用户信息行为状态影响分析 总被引：3，自引：0，他引：3
借鉴详尽可能性模型和启发式—系统化模型的相关理论提出假设,采用实验研究方法对两种网络用户信息行为状态——浏览和查找下用户的介入程度,对信息的评价,以及是否具备相信自己准确评价了信息的自信心和行为意向上的差异进行考察,实验结果证明假设成立,对网站设计,特别是医疗保健类网站的建设有借鉴意义。 相似文献
14.
Ellis-Danquah LV 《Medical reference services quarterly》2004,23(4):61-73
The Web continues to rapidly evolve as a medium of information exchange. One major area where the Web is now playing a definitive role is in increasing consumer accessibility to health information for personal health and disease-related questions. The comprehensiveness of health information on the Web has the potential to empower consumers when making critical health-related decisions. Conversely, the myriad of information resources presents an array of challenges when seeking specific, credible, and timely health information. As the United States health care system continues to change, community concerns about the quantity, quality, and broad nature of information has become critical. In particular, the Web can play a vital role in health awareness and promotion by disseminating health information for traditionally underrepresented groups, particularly African Americans. Increased accessibility for this group has not always been the focus of attention; however, the growth of the Web coupled with heightened awareness of public health initiatives brings to the forefront numerous opportunities to provide tools that promote essential health information literacy. 相似文献
15.
本文介绍了语义Web和Ontology的概念特征，探讨了语义Web与Ontology的关系，结合信息检索研究了Ontology在语义Web中的应用，并对实现中需解决的问题进行了说明。 相似文献
16.
The collective feedback of the users of an Information Retrieval (IR) system has been shown to provide semantic information
that, while hard to extract using standard IR techniques, can be useful in Web mining tasks. In the last few years, several
approaches have been proposed to process the logs stored by Internet Service Providers (ISP), Intranet proxies or Web search
engines. However, the solutions proposed in the literature only partially represent the information available in the Web logs.
In this paper, we propose to use a richer data structure, which is able to preserve most of the information available in the
Web logs. This data structure consists of three groups of entities: users, documents and queries, which are connected in a
network of relations. Query refinements correspond to separate transitions between the corresponding query nodes in the graph,
while users are linked to the queries they have issued and to the documents they have selected. The classical query/document
transitions, which connect a query to the documents selected by the users’ in the returned result page, are also considered.
The resulting data structure is a complete representation of the collective search activity performed by the users of a search
engine or of an Intranet. The experimental results show that this more powerful representation can be successfully used in
several Web mining tasks like discovering semantically relevant query suggestions and Web page categorization by topic. 相似文献
17.
MacCall SL 《Medical reference services quarterly》1997,16(4):69-74
The metastrategy for World-Wide Web information retrieval was presented as an integrated approach to end-user searching in clinical medicine, although its application may be made to any search for WWW information. Certain distinctions, such as between anticipated and unanticipated clinical information needs and between WWW catalogs for retrieving Web sites and WWW databases for retrieving Web pages, were made. These distinctions are important in the end-user strategy because they help maximize the productivity of the WWW for clinicians. 相似文献
18.
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
19.
在分析传统网络爬行器爬行算法的基础上,通过将隧道算法和网页页面分块技术相结合,指导专题爬行器进行爬行。通过4所高校门户网站的教育资源搜索实验表明,新的算法可以有效提高搜索效率。 相似文献
20.
Fitzpatrick RB 《Medical reference services quarterly》2007,26(3):75-83
The "Online Updates" column generally focuses on bibliographic databases that may be licensed from commercial vendors or are available free of charge from a federal government agency. HazLit is featured because it is a unique and comprehensive resource of the literature of natural disasters. This column provides background information on HazLit and offers some searching basics, as well as highlights special information found at the Web site that hosts the database. 相似文献