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1.
《Public Library Quarterly》2013,32(3-4):139-168
Abstract Presently, eating disorders affect millions of people. Today, the media and the Internet are major publishing channels for consumer health information. Much research has found that the media may offer insufficient information on eating disorders. This research examines the quantity of adult consumer health publications on eating disorders in magazine articles and on the Internet in 1998 and investigates the effectiveness of Internet search engines. The results indicate that the resources found in popular magazines and on the Internet are not adequate, and that the Internet search engines are not effective in searching for information. 相似文献
2.
Thanh Tin Tang Nick Craswell David Hawking Kathy Griffiths Helen Christensen 《Information Retrieval》2006,9(2):207-225
When searching for health information, results quality can be judged against available scientific evidence: Do search engines return advice consistent with evidence based medicine? We compared the performance of domain-specific health and depression search engines against a general-purpose engine (Google) on both relevance of results and quality of advice. Over 101 queries, to which the term ‘depression’ was added if not already present, Google returned more relevant results than those of the domain-specific engines. However, over the 50 treatment-related queries, Google returned 70 pages recommending for or against a well studied treatment, of which 19 strongly disagreed with the scientific evidence. A domain-specific index of 4 sites selected by domain experts was only wrong in 5 of 50 recommendations. Analysis suggests a tension between relevance and quality. Indexing more pages can give a greater number of relevant results, but selective inclusion can give better quality. 相似文献
3.
[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
4.
Spink A Yang Y Jansen J Nykanen P Lorence DP Ozmutlu S Ozmutlu HC 《Health information and libraries journal》2004,21(1):44-51
This paper reports findings from an analysis of medical or health queries to different web search engines. We report results: (i). comparing samples of 10000 web queries taken randomly from 1.2 million query logs from the AlltheWeb.com and Excite.com commercial web search engines in 2001 for medical or health queries, (ii). comparing the 2001 findings from Excite and AlltheWeb.com users with results from a previous analysis of medical and health related queries from the Excite Web search engine for 1997 and 1999, and (iii). medical or health advice-seeking queries beginning with the word 'should'. Findings suggest: (i). a small percentage of web queries are medical or health related, (ii). the top five categories of medical or health queries were: general health, weight issues, reproductive health and puberty, pregnancy/obstetrics, and human relationships, and (iii). over time, the medical and health queries may have declined as a proportion of all web queries, as the use of specialized medical/health websites and e-commerce-related queries has increased. Findings provide insights into medical and health-related web querying and suggests some implications for the use of the general web search engines when seeking medical/health information. 相似文献
5.
Jessica Bates Paul Best Janice McQuilkin Brian Taylor 《The Journal of Academic Librarianship》2017,43(1):8-17
The availability of web search engines offers opportunities in addition to those provided by bibliographic databases for identifying academic literature, but their usefulness for retrieving research is uncertain. A rigorous literature search was undertaken to investigate whether web search engines might replace bibliographic databases, using empirical research in health and social care as a case study. Eight databases and five web search engines were searched between 20 July and 6 August 2015. Sixteen unique studies which compared at least one database with at least one web search engine were examined, as well as drawing lessons from the authors’ own search process. Web search engines were limited in that the searcher cannot be certain that the principles of Boolean logic apply and they were more limited than bibliographic databases in their functions, such as exporting abstracts. Recommendations are made for improving the rigour and quality of reporting studies of academic literature searching. 相似文献
6.
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
7.
[目的/意义] 针对当前我国健康类搜索引擎可用性程度较低、用户满意度不高的现状,对3个常用健康类搜索引擎的可用性进行评估,以期促进该类搜索引擎技术的发展,提高信息服务质量。[方法/过程] 从用户视角出发,采用实验研究方法,探讨并比较"有问必答"好大夫在线"和"39健康搜"3个健康类搜索引擎的有效性、效率和满意度。[结果/结论] 3个搜索引擎在系统反应速度和易学程度方面较好,但查准率还有待提高;返回网页虽内容丰富,但同时还存在重复、啰嗦、不严谨等问题。本研究发现,用户对健康信息的主观评价与基于临床证据的评价结果有所冲突,如何调和二者之间的矛盾,建立更为全面且有效的健康信息评价指标体系有待进一步研究。 相似文献
8.
《The Journal of Academic Librarianship》2022,48(6):102603
BackgroundDuring the COVID-19 pandemic, students have trouble coping with the available health information regarding the coronavirus in their daily lives because of misinformation.ObjectivesThe aim of this study was to evaluate online health information seeking and digital health literacy among information and learning resources undergraduate students at Taibah University during the COVID-19 pandemic.MethodsTo investigate the primary goal, this study used a simultaneous exploratory mixed methods design. Seventeen students participated in phone interviews, and 306 were invited to complete an online survey.AnalysisThe collected data was analyzed using both quantitative (SPSS) and qualitative (NVivo 10) methods.ResultsSearch engines, social media, and YouTube were most often used by the respondents as sources to search for COVID-19-related information. COVID-19 symptoms, restrictions, and the current spread of COVID-19 were the most searched topics by the respondents. Significant and relevant differences emerged for the digital health literacy subscales “information search” and “adding self-generated content”. However, there were no significant differences in the digital health literacy subscale “determining relevance”.ConclusionUsing the internet to provide health information tailored to the needs and interests of students to seek health information online and thereby improve their health literacy. 相似文献
9.
ABSTRACT The Internet has made accessing information a simple task. Each day millions of Americans log on to the Web in search of information on a variety of subjects. One of the most sought after type of information is medical information. Individuals are taking a more proactive role in their personal health care and the health care of their friends and families. Attempting to locate and evaluate quality health care information can pose a variety of problems for the consumer. Academic libraries have an opportunity to play a crucial role in facilitating the consumer's access to quality, reliable health information by developing and implementing consumer health outreach programs designed to address search problems and information interpretation difficulties. The benefits for both the community and the library are numerous when a consumer health information outreach program is successfully employed. This article will chronicle the creation of a Consumer Health Outreach program, entitled “WNY Consumer Health,” intended for senior citizens in Western New York. This program was designed to satisfy the requirements of a graduate special project for the completion of the authors' MLS degree. 相似文献
10.
Eating disorders affect millions of people, and their prevalence demonstrates that the condition exists across gender and cultural boundaries. The Internet is a major channel for publishing and disseminating electronic information, allowing worldwide access of massive health-related, lay- and professional-oriented information. However, much research has found that health-related information on the Internet can be overwhelming, incomplete, and/or inaccurate. The success of health promotion in the 21st century depends on whether available consumer health information (CHI) is adequate, accurate, and easy to use. Usually, health disclaimers, caveats, and other health-related alerts are messages to notify users that the information provided is not intended nor implied to be a replacement or an alternative for professional health-related advice. These messages also serve as indicators to show that information providers take ethical responsibility for quality control in terms of providing valid and reliable consumer health information on the Internet. The study used content analysis1to examine the provision and assess the quality of health disclaimers, caveats, and other health-related alerts included in adult CHI on eating disorders published on the Internet in 1998. The researcher-generated instrument was based on evaluative criteria derived from Alexander and Tate;2Health On the Net Foundation;3Mitretek Systems;4and Silberg, Lundberg and Musacchio.5Web search engines (Northern Light, HotBot, and Excite) were used for data collection on Internet-based publications. The results indicated that the CHI on eating disorders on the Internet did not include disclaimers, caveats, and other health-related alerts which demonstrates a lack of quality control and ethical responsibility on the part of the information providers and site administrators. 相似文献
11.
《International Information and Library Review》2000,32(3-4):325-339
Eating disorders affect millions of people, and their prevalence demonstrates that the condition exists across gender and cultural boundaries. The Internet is a major channel for publishing and disseminating electronic information, allowing worldwide access of massive health-related, lay- and professional-oriented information. However, much research has found that health-related information on the Internet can be overwhelming, incomplete, and/or inaccurate. The success of health promotion in the 21st century depends on whether available consumer health information (CHI) is adequate, accurate, and easy to use. Usually, health disclaimers, caveats, and other health-related alerts are messages to notify users that the information provided is not intended nor implied to be a replacement or an alternative for professional health-related advice. These messages also serve as indicators to show that information providers take ethical responsibility for quality control in terms of providing valid and reliable consumer health information on the Internet. The study used content analysis1to examine the provision and assess the quality of health disclaimers, caveats, and other health-related alerts included in adult CHI on eating disorders published on the Internet in 1998. The researcher-generated instrument was based on evaluative criteria derived from Alexander and Tate;2Health On the Net Foundation;3Mitretek Systems;4and Silberg, Lundberg and Musacchio.5Web search engines (Northern Light, HotBot, and Excite) were used for data collection on Internet-based publications. The results indicated that the CHI on eating disorders on the Internet did not include disclaimers, caveats, and other health-related alerts which demonstrates a lack of quality control and ethical responsibility on the part of the information providers and site administrators. 相似文献
12.
Measuring Search Engine Quality 总被引：12，自引：3，他引：9
The effectiveness of twenty public search engines is evaluated using TREC-inspired methods and a set of 54 queries taken from real Web search logs. The World Wide Web is taken as the test collection and a combination of crawler and text retrieval system is evaluated. The engines are compared on a range of measures derivable from binary relevance judgments of the first seven live results returned. Statistical testing reveals a significant difference between engines and high intercorrelations between measures. Surprisingly, given the dynamic nature of the Web and the time elapsed, there is also a high correlation between results of this study and a previous study by Gordon and Pathak. For nearly all engines, there is a gradual decline in precision at increasing cutoff after some initial fluctuation. Performance of the engines as a group is found to be inferior to the group of participants in the TREC-8 Large Web task, although the best engines approach the median of those systems. Shortcomings of current Web search evaluation methodology are identified and recommendations are made for future improvements. In particular, the present study and its predecessors deal with queries which are assumed to derive from a need to find a selection of documents relevant to a topic. By contrast, real Web search reflects a range of other information need types which require different judging and different measures. 相似文献
13.
Despite a clear improvement of search and retrieval temporal applications, current search engines are still mostly unaware of the temporal dimension. Indeed, in most cases, systems are limited to offering the user the chance to restrict the search to a particular time period or to simply rely on an explicitly specified time span. If the user is not explicit in his/her search intents (e.g., “philip seymour hoffman”) search engines may likely fail to present an overall historic perspective of the topic. In most such cases, they are limited to retrieving the most recent results. One possible solution to this shortcoming is to understand the different time periods of the query. In this context, most state-of-the-art methodologies consider any occurrence of temporal expressions in web documents and other web data as equally relevant to an implicit time sensitive query. To approach this problem in a more adequate manner, we propose in this paper the detection of relevant temporal expressions to the query. Unlike previous metadata and query log-based approaches, we show how to achieve this goal based on information extracted from document content. However, instead of simply focusing on the detection of the most obvious date we are also interested in retrieving the set of dates that are relevant to the query. Towards this goal, we define a general similarity measure that makes use of co-occurrences of words and years based on corpus statistics and a classification methodology that is able to identify the set of top relevant dates for a given implicit time sensitive query, while filtering out the non-relevant ones. Through extensive experimental evaluation, we mean to demonstrate that our approach offers promising results in the field of temporal information retrieval (T-IR), as demonstrated by the experiments conducted over several baselines on web corpora collections. 相似文献
14.
《Medical reference services quarterly》2013,32(2):97-107
Abstract Google is the search engine of choice for most Internet users. For a variety of reasons, librarians and other expert searchers do not always use Google to its full potential, even though it provides capabilities not possible in traditional bibliographic databases and other search engines. Applying expert searching principles and practices, such as the use of advanced search operators, information retrieval strategies, and search hedges to Google will allow health sciences librarians to find quality information on the Internet more efficiently and effectively. 相似文献
15.
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
16.
《Public Library Quarterly》2013,32(3-4):95-107
Abstract This article identifies the major health challenges of the lesbian, gay, bisexual and transgendered (L/G/B/T) communities, pointing out that each is faced with stigma and discrimination in the search for healthcare. Members of these communities are thus more likely to seek out and consult services offered by public libraries which identify and disseminate consumer health and self-care information appropriate to their needs. The article concludes with a bibliography of current sources of information-both print and electronic-that will interest the L/G/B/T health consumer. 相似文献
17.
18.
搜索引擎的最新进展述要 总被引：1，自引：0，他引：1
搜索引擎已成为人们利用网络的最重要工具.目前,网络上出现了一些具有新颖性、创新性的搜索引擎或挖掘出搜索引擎的新功能,其中有些研究成果直接代表着搜索引擎的发展方向.文章通过跟踪、试用、分析等环节,对新的搜索引擎或具有新功能的搜索引擎进行了归纳,便于人们更好地了解当前世界搜索引擎的现状. 相似文献
19.
《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
20.
The Internet has made accessing information a simple task. Each day millions of Americans log on to the Web in search of information on a variety of subjects. One of the most sought after type of information is medical information. Individuals are taking a more proactive role in their personal health care and the health care of their friends and families. Attempting to locate and evaluate quality health care information can pose a variety of problems for the consumer. Academic libraries have an opportunity to play a crucial role in facilitating the consumer's access to quality, reliable health information by developing and implementing consumer health outreach programs designed to address search problems and information interpretation difficulties. The benefits for both the community and the library are numerous when a consumer health information outreach program is successfully employed. This article will chronicle the creation of a Consumer Health Outreach program, entitled "WNY Consumer Health," intended for senior citizens in Western New York. This program was designed to satisfy the requirements of a graduate special project for the completion of the authors' MLS degree. 相似文献