共查询到19条相似文献，搜索用时 203 毫秒
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基于网站链接分析的"211工程"高校排名实证研究 总被引：3，自引：0，他引：3
阐述基于网站链接分析的高校评价研究中存在的两点不足,即链接同等重要假设和数据不可靠性。然后设计一种可根据不同网站类型有侧重抓取的广度优先爬虫算法,抓取"211工程"高校网站作为研究样本。基于所得数据构成的社会网络,对社会网络分析中节点重要性测度的3种指标的排名效果进行实验,发现邻近度声望指标最优。并进一步引入PageRank思想,提出一种对邻近度声望指标进行改进的新指标UnivRank。实验结果表明,新指标的效果显著优于其他指标。 相似文献
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以30所高校校园网及其图书馆网站作为研究样本,通过搜索工具MtaVista和Alltheweb得到相关网站在校园网的链接指标,并对这些指标数据进行分析,给出各指标与大学排名和科研得分之间的相互关系,得出高校图书馆网站在高校评价中占据着重要的地位及搜索引擎的可靠性和一致性的结论,并分析讨论目前高校图书馆网站在校园网内影响因子较小的原因。 相似文献
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我国大学图书馆网站链接的实证分析——以中国"211工程"高校为例 总被引：10，自引：0，他引：10
文摘以我国“211工程”大学图书馆作为研究样本,以Google和Altavista为搜索工具,得到相关网站的12个链接分析指标。通过对这些指标数据进行分类处理与综合分析,全方位展示并评价我国重点大学图书馆网站的规模、影响以及各指标的相对排序位置,为我国大学图书馆网站的建设提供借鉴性信息,并从所得数据的处理结果对链接指标与链接分析工具进行了讨论。 相似文献
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通过PC端对中国高校科技期刊研究会网站的438种中文会员期刊网站的HTML应用情况进行了调查,调查内容主要包括实行HTML的期刊数量,以及HTML界面形式、链接方式、扩展服务功能和使用量。结果表明:仅78种期刊实行HTML阅读模式;界面形式以三栏为主;链接内容的同质性较严重,且链接目标较单一;扩展服务功能不完善;多数期刊的HTML浏览量低于PDF下载量。从3个方面阐述提升HTML应用价值的策略,即提高期刊应用普及度、增强读者黏性、充分发挥各数据主体的作用。 相似文献
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提出人才网页自动识别系统设计,实现对Nutch定向采集系统抓取的高校网站页面进行人才描述网页自动识别。识别过程中使用自动获取的网页的URL特征、网页Title标签特征、链接文字特征以及网页文本内容特征,使用人名词表、正面特征词表、负面特征词表对各项识别特征进行匹配以计算特征值,借助开源软件LibSVM实现基于多特征值的人才网页自动识别。 相似文献
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随着关联数据应用的不断深入,已有众多的数据集发布在网上,但目前已发布的关联数据集之间关联很少,为数据的共享使用带来不便。本研究提出一种基于统计学习方法进行关联数据集间实体识别及链接构建的方法。首先进行数据集间的实体匹配,采用基于K中心点聚类算法实现属性的聚合及关系发现,对具有高相关度的属性进行匹配关系描述,降低实体匹配时的属性匹配计算次数;其次对已匹配的属性进行实体属性值的相似度比较计算,实现实体间相似度的比较,在SILK框架下实现实体的链接构建工作,以达到实体链接发现的目的;最后通过实验验证,这一方法能降低数据集间实体匹配计算次数,提高实体链接的正确率,具有可行性及实用性。图12。表4。参考文献19。 相似文献
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美国大学图书馆网站的链接分析——以30所美国大学图书馆网站为例 总被引：1，自引：0，他引：1
以美国30所大学图书馆网站为研究样本,通过搜索工具Alta Vista和Alltheweb得到相关网站的链接指标。并对这些指标数据进行分析,指出各指标与大学排名和学术声誉之间的相互关系,构建了大学图书馆网站的链接特征指标．并得出搜索引擎的可靠性和一致性结论。 相似文献
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通过本节的研究我们发现:①网站各层在规模、文件类型和所拥有的网络链接数量等方面的变化具有明显的规律性,它取决于各层的功能定位;②对于链接密度和页面平均链接数在网站各层之间的变化,本研究未能给予精确的描述,仅就其变化趋势和原因进行了分析。从网站各层功能及其在链接上所表现出的特点来看,功能定位不同的层次,链接出现的频率是不同的,甚至应该能以链接出现频率的变化确切地判断其相应的功能定位,但依靠链接密度和页面平均链接数难以实现这个目标,必须考虑建立与页面功能和链接频率都相关的新的度量指标;③本研究结果证实,我们通过比较网站的网络影响因子筛选出的9个研究对象,其信息组织是比较合理的。这暗示我们,网站信息资源组织的合理程度与其网络影响力可能具有一定的联系。 相似文献
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In most African countries, compared to any other part of the world, the use of information and communication technologies such as those necessary to provide e-Government services is minimal. The continent was once labeled a “technological desert.” The contributing factors, among others, are lack of infrastructure, low literacy rates, low economic development, and a variety of cultural factors. Despite these obstacles, most African countries have made noticeable progress during the last couple of decades. Almost all African governments now have some presence on the Web, including fully fledged e-Government web portals, albeit in small numbers. However, the current status of e-Government services in African countries is not well documented in detail. We present results of a comprehensive analysis of 582 e-Government service websites with respect to the type of websites, the services and features available, as well as the level of development of e-Government services. We also compute e-Government indexes, produce e-Government rankings, and compare our rankings to previous ones. A clear picture that emerges from our analysis and results is that although progress has been made, there is a long way to go, to bridge not only the North–South divide when it comes to e-Government services but also among the various sub-regions. In addition, recommendations for future researchers regarding e-Government services in Africa are made. 相似文献
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In the Fall of 2009, the Moraine Valley Community College Library, using guidelines developed by Jakob Nielsen, conducted a usability study to determine how students were using the library Web site and to inform the redesign of the Web site. The authors found that Moraine Valley's current gateway design was a more effective access point to library resources than a mock-up site which incorporated a central-search box on the site homepage. This finding stands in contrast to the observed trends of library Web site design that emphasizes a “Googlized” search. 相似文献
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Website attributions were measured as one way of evaluating the efficacy of the “one-shot” library session. Survey results indicated support for single session information literacy instruction in that participants exposed to a librarian classroom visit reported that they would be significantly more likely to have used library databases, checked out a book, asked a librarian for help, and to predict that they would ask a librarian for help at a later time. Results also indicated that students who reported a classroom librarian visit may have engaged in more systematic or complex processing to evaluate websites in that they considered more attributes and took less time to make better judgments about the quality of sources. 相似文献
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傻瓜软件是我国图书馆自动化管理软件市场化的发展方向 总被引：1，自引：1，他引：0
文章从“傻瓜像机”的基本含义谈起, 接着重点阐明了图书馆自动化管理方面的“傻瓜软件”的六条优点后指出, 傻瓜软件不但是智能化软件的集中表现, 而且是我国图书馆自动化管理软件市场化的发展方向。 相似文献
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Andrew WhitmoreAuthor Vitae 《Government Information Quarterly》2012,29(1):68-75
There is much debate among scholars about what constitutes e-government success, what method is best for measuring it, and which variables best describe it. This lack of consensus naturally leads to disagreement about the best approach for ranking the e-government programs of different countries. This article evaluates the current standard in e-government ranking, the United Nations E-government Development Index, by performing a confirmatory factor analysis on the raw data reported in the “Data tables” section of the “Statistical annex” in the 2010 United Nations E-Government Survey. The results identify several technical issues with the index and point to the need for a statistical tool that can be used to evaluate and guide the development of e-government ranking systems. The article recommends that researchers develop a new paradigm for quantitative e-government ranking that uses factor analysis to aid in the selection of variables, the organization of aggregate constructs, and the determination of weights. 相似文献
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The issue of rural communication development has been conventionally examined under labels such as universal service, digital, divide, broadband deployment, and E-Government, which generally fall into two seemingly distinct categories—access and applications. In China, these concepts are currently incorporated into a single program, if not a single term—“Village Informatization Program” (“VIP”). The VIP upgraded the objectives of previous telephone and television “Village Access Projects” (“VAPs”), an upgrade which is intended to provide “comprehensive information services” in rural areas. The execution of the VIP regime has been faced with challenges. The lack of explicitly defined objectives and institutional arrangement has led to regulatory confusion and has compromised the outcome of initiatives taken by central department and regional/local governments which are more often independent in actions. China is therefore faced with the imperative of formulating the VIP regime which is to assimilate to China's unique institutional context. This article first reviews the current status of the VIP regime before moving on to the discussion of establishing an integrative and sustainable VIP regulatory regime in China. Then, the current regulatory regime is characterized based on which reforms are suggested—in which is highlighted a layer-based localization regulatory solution, which delineates provincial/local roles from central roles based on a stratified incentive policies and governance arrangement. Possible applications in other countries are discussed in the conclusion. 相似文献
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网上金融信息资源分布与搜索方式初探 总被引：4，自引：1，他引：3
讨论了金融信息资源在网上的分布, 包括金融信息资源的分类及其特点、各类金融信息资源在网上的分布, 涉及到相关站点、搜索引擎、电子媒体和网上数据库等。作者研究了搜索方式, 涉及到搜索引擎方式和“滚雪球”方式, 前者包括直接搜索和分类浏览, 并对后者检索原理与引文索引方式进行了比较。 相似文献