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基于链接分析的学术性WWW网络资源 总被引:10,自引:1,他引:9
本文给出基于经济学和情报学的理论与方法结合之上的量化评价方法。它主要利用网页间的链接关系,在对网站进行评价的同时,完成网站分类。对优化现有的搜索引擎性能具有-定的价值,对提高个性化搜索agent的效率尤其有效。 相似文献
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基于链接分析的学术性WWW网络资源评价与分类方法 总被引:8,自引:0,他引:8
本文给出基于经济学和情报学的理论与方法结合之上的量化评价方法。它主要利用网页间的链接关系 ,在对网站进行评价的同时 ,完成网站分类。对优化现有的搜索引擎性能具有一定的价值 ,对提高个性化搜索agent的效率尤其有效 相似文献
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试论图书馆网站评价体系 总被引:2,自引:0,他引:2
黄娟娟 《图书馆理论与实践》2005,(2):19-21
构建了图书馆网站评价体系框架,即网站技术条件、网页设计、网站的更新与维护、网站的安全性、网站与用户的交流功能、网站用户教育功能和服务功能,以及网站信息资源等方面的评价。文章还介绍了网站的评价方法 相似文献
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网站评价指标体系的构建方法与过程 总被引:26,自引:0,他引:26
文章以中文社会科学网站为例,结合专家问卷调查、搜索引擎、统计分析、层次分析等研究工具和方法,从定性和定量的角度构建了一个综合评价指标体系,旨在为网站综合评价指标与方法体系的构建方法与过程提供一种思路。 相似文献
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社会科学核心网站的评价标准与方法 总被引:3,自引:0,他引:3
文章在介绍国内外网站评价研究的基础上,指出了当前网站评价研究之不足,结合社会科学类网站的特点,论述了网站评价的三大原则,提出了包括内容质量、系统设计、网站管理三大指标的社会科学核心网站评价指标体系和评价方法。 相似文献
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网络信息影响力评价方法 总被引:7,自引:0,他引:7
网络信息影响力评价方法主要可分为问卷调查法、搜索引擎收录情况、链接分析法、用户访问量统计、社会效益评价、经济效益评价等。影响力评价多采取定量研究的方法,弥补了同行评议法等定性方法的不足。 相似文献
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学科核心网站综合评价指标体系和测评方法初探 总被引:2,自引:0,他引:2
分析了文献计量学方法以及核心期刊评价指标对学科核心网站评价指标选择的借鉴意义,探讨了由重要搜索引擎被索度、评价平台链接点被访量、专家智能评价、网上用户评价指标构成的、定量与定性相结合的学科核心网站综合评价指标体系及测评方法,提出了建立学科核心网站评价平台(网页)的构思,对于开展学科核心网站评价具有重要的方法论意义。 相似文献
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网络信息资源评价中的AHP方法 总被引:4,自引:0,他引:4
文章论述了网络信息资源的评价原则,重点分析、研究了国内外一系列网络信息资源的评价标准,运用AHP法,建构网络信息资源评价的层次结构模型及指标体系。 相似文献
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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
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网络信息挖掘系统评价研究 总被引:1,自引:0,他引:1
当前市场上流行的网络挖掘系统名目繁多,性能各异,为了协助使用者选择到适合的挖掘工具,本文对挖掘系统评价进行了研究。本文将评价指标设定为四类:商业指标、过程指标、使用评价与辅助评价,并对指标赋值方法、评价指数计算方法、评价流程等进行了探讨。 相似文献
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基于OGSA的数字信息资源共享平台研究 总被引:1,自引:0,他引:1
数字信息资源共享建设中存在着忽略短暂性信息资源、信息异构和未考虑获取费用等问题。本文针对以上问题,分析了Web Service技术、网格技术在数字信息资源共享中的积极作用,在探讨数字OGSA标准的基础上,构建了基于OGSA的数字信息资源共享平台。 相似文献
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在Web2.0理论及理念的发展与影响下,数字图书馆的发展悄然进入了Lib2.0阶段。在Google、Yahool等搜索引擎的强势下,Web2.0给数字图书馆的可持续发展带来了新的契机。数字图书馆的可持续发展程度与Web2.0技术的应用密不可分,作为Web2.0家族中核心技术之一,P2P技术将会促进数字图书馆的可持续发展。文章针对P2P技术给数字图书馆发展中的一些关键问题如个性化服务、信息组织、数字化资源服务模式等影响进行了深入剖析。 相似文献
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Web2.0环境下的深阅读及图书馆导读策略 总被引:1,自引:0,他引:1
随着互联网由1.0向2.0的转变,人们的阅读习惯与阅读方式也发生了变化。Blog、WiKi、RSS等应用工具为网络用户进行深阅读提供了技术平台,其内在的用户为主、去权威化等特性更有利于网络阅读功能向纵深延伸。图书馆应采取相应策略深化导读工作。 相似文献
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Nick Szydlowski 《期刊图书馆员》2013,64(1):35-39
Important content is increasingly published on the Web, and not all of it is being preserved by large projects such as the Internet Archive's “Wayback Machine.” As new technologies transform the publishing industry, libraries will need to identify new forums for scholarly communication as they develop, and take steps to ensure that relevant materials do not slip through the cracks. Local content, government documents, and database-backed websites are three areas in which libraries may find that existing Web archives do not contain the content that users are likely to need. 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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Chang Shik Choi 《Communication Research Reports》2017,34(4):307-315
As online surveys have become popular, concerns have emerged about the quality of responses submitted via mobile technology, such as limited text readability, increased distractions, etc. To assess the validity of this concern, this study examines the effect of medium (PC, smartphone) on the response reliability of Big-Five Mini-Markers for personality. Results provide little support for the concern, indicating that responses from smartphones are as reliable as those submitted from PCs. Conditions where mobile devices may not suffer with poor reliability are discussed. 相似文献