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基于链接分析的网站评价实证研究——以四大门户网站为例 总被引：5，自引：0，他引：5
使用AllTheWeb对四大门户网站的网页总数、链接总数、外部链接数进行测度,并计算出其网络影响因子和链接效率,以此来评价四大门户网站的被利用情况.将5种链接指标与网站的人均页面访问量进行相关性分析,初步确定外部链接数能同时提升网站影响力和流量,为门户网站自身优化提供了思路. 相似文献
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运用网络链接分析方法,以Google搜索引擎作为搜索工具,测度了稻花香集团和枝江酒业公司网站的网页数、总链接数、外部链接数,并进一步分析两家企业网站的网络影响力及它们之间的区别。 相似文献
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以我国20个省级教育信息综合网站为样本,运用Google搜索引擎和网络链接分析方法获取样本网站的总链接数、内部链接数、外部链接数和网页总数等链接分析指标数据,并对网络影响因子进行计算。然后使用灰关联排序的方法对其中八项指标数值进行测度,在此基础上对我国省级教育信息综合网站的建设状况、利用状况和影响力情况进行分析研究。 相似文献
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基于链接分析方法,从引文分析法的角度深入分析了当当和京东两大图书商城。以雅虎作为检索工具,设定链接总数、外连接数、内连接数、网页总数为测度指标。通过计算二者的网络影响因子、外部影响因子、内部影响因子,分析了二者存在的问题,并提出了建议。 相似文献
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许多人的“收藏夹”中珍藏了诸多网站或网页的链接地址,其中,有些网站或网页可能在一段时间后就悄然消失,而我们却浑然不知,它们的链接地址在“收藏夹”中也依然存在。日久天长,随着“收藏夹”内容的不断增长,想要逐个检查验证哪些地址是有效链接,哪些是无效链接,就成了牵扯人们精力的事情,是该找个“工具”来帮助整理一下“收藏夹”了。利用一个小小的软件,就可以帮助你快速地清理“收藏夹”中的无效链接,何乐而不为呢?请随我一起体验一下。 AM—DeadLink是一个简单、易用的,专用于探测超链接的免费软件,它可以检测出“收藏夹”中的无效链接和重复链接,它在检测时采用多线程方式,因此检测的速度十分快.,在删除无效或重复链接时,它还可以备份原始数据。AM—DeadLink支持包括IE、Netscape、Opera等所有主流浏览器。 相似文献
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基于机器学习的Web链接的抽取 总被引：1，自引：0，他引：1
互联网网页是通过超链接连接起来的,为人们的日常生活和商务用途提供了非常丰富的信息资源。链接结构分析在万维网的很多研究领域发挥着越来越重要的作用。然而存在着许多与主题无关的链接,造成了主题漂移。本文分析了链接本身的特点,介绍了一种有监督机器学习方法自动地抽取网页中的相关链接。试验结果表明该算法具有实用的价值。 相似文献
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《Information processing & management》2005,41(4):973-986
The Web is an enormous set of documents connected through hypertext links created by authors of Web pages. These links have been studied quantitatively, but little has been done so far in order to understand why these links are created. As a first step towards a better understanding, we propose a classification of link types in academic environments on the Web. The classification is multi-faceted and involves different aspects of the source and the target page, the link area and the relationship between the source and the target. Such classification provides an insight into the diverse uses of hypertext links on the Web, and has implications for browsing and ranking in IR systems by differentiating between different types of links. As a case study we classified a sample of links between sites of Israeli academic institutions. 相似文献
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《Information processing & management》2005,41(2):347-359
Hyperlink patterns between Canadian university Web sites were analyzed by a mathematical modeling approach. A multiple regression model was developed which shows that faculty quality and the language of the university are important predictors for links to a university Web site. Higher faculty quality means more links. French universities received lower numbers of links to their Web sites than comparable English universities. Analysis of interlinking between pairs of universities also showed that English universities are advantaged. Universities are more likely to link to each other when the geographical distance between them is less than 3000 km, possibly reflecting the east vs. west divide that exists in Canadian society. 相似文献
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网络检索工具性能评价标准浅议 总被引：23，自引：3，他引：23
本文根据当前网络检索工具的新变化、新特点，提出了一套对网络检索工具进行性能评价与比较的标准，该标准由5个方面组成，分别是:索引 数据库构成（如，标引深度、更新频率）、检索功能（基本检索功能与高级检索功能）、检索效果（响应时间、查全率R、查准率P、重复率R、死链接率Rd）、检索结果显示（结果显示格式的种类与内容、相关性排序依据等）以及用户负担（用户界面、相关文献、信息过滤功能等），其中重复率Rr、互链接率Rd是作者根据需要提出的两个新的定量评价指标。 相似文献
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Ecommerce is developing into a fast-growing channel for new business, so a strong presence in this domain could prove essential to the success of numerous commercial organizations. However, there is little research examining ecommerce at the individual customer level, particularly on the success of everyday ecommerce searches. This is critical for the continued success of online commerce. The purpose of this research is to evaluate the effectiveness of search engines in the retrieval of relevant ecommerce links. The study examines the effectiveness of five different types of search engines in response to ecommerce queries by comparing the engines’ quality of ecommerce links using topical relevancy ratings. This research employs 100 ecommerce queries, five major search engines, and more than 3540 Web links. The findings indicate that links retrieved using an ecommerce search engine are significantly better than those obtained from most other engines types but do not significantly differ from links obtained from a Web directory service. We discuss the implications for Web system design and ecommerce marketing campaigns. 相似文献
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文献链接分析以文献间的"同浏览"现象为研究对象,在3个基本假设的基础上展开,充分借鉴引文分析的思想和方法,挖掘文献间的客观关联,具有适用面广、简单易用的特点。分析结果受浏览动机、信息能力和信息环境等多种因素影响,其可信度主要取决于来源数据的积累量。同时,分析过程中采用的文献聚类技术也十分关键。只有采用合适的数理统计手段对足够多的数据进行处理分析,才能有效缩小误差,得出有意义的结论。 相似文献
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基于HTMLParser对网页进行解析,可抽取标签间的Link、image、meta和title等信息。使用HTMLParser来提取Web文献中的题名、关键字、摘要、作者、来源等信息,清洗后存入MySql数据库当中,以备后续数据挖掘使用。对此进行了论述。 相似文献
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This article presents conceptual navigation and NavCon, an architecture that implements this navigation in World Wide Web pages. NavCon architecture makes use of ontology as metadata to contextualize user search for information. Based on ontologies, NavCon automatically inserts conceptual links in Web pages. By using these links, the user may navigate in a graph representing ontology concepts and their relationships. By browsing this graph, it is possible to reach documents associated with the user desired ontology concept. This Web navigation supported by ontology concepts we call conceptual navigation. Conceptual navigation is a technique to browse Web sites within a context. The context filters relevant retrieved information. The context also drives user navigation through paths that meet his needs. A company may implement conceptual navigation to improve user search for information in a knowledge management environment. We suggest that the use of an ontology to conduct navigation in an Intranet may help the user to have a better understanding about the knowledge structure of the company. 相似文献