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91.
《Journal of Informetrics》2014,8(2):295-309
This study examines collaboration dynamics with the goal to predict and recommend collaborations starting from the current topology. Author-, institution-, and country-level collaboration networks are constructed using a ten-year data set on library and information science publications. Different statistical approaches are applied to these collaboration networks. The study shows that, for the employed data set in particular, higher-level collaboration networks (i.e., country-level collaboration networks) tend to yield more accurate prediction outcomes than lower-level ones (i.e., institution- and author-level collaboration networks). Based on the recommended collaborations of the data set, this study finds that neighbor-information-based approaches are more clustered on a 2-D multidimensional scaling map than topology-based ones. Limitations of the applied approaches on sparse collaboration networks are also discussed. 相似文献
92.
Handle系统作为一种通用的名称服务系统,能够为网络中的数字对象提供的永久标识、动态链接和安全管理等基础服务。文章重点介绍Handle系统的发展及应用情况,从数字图书馆、数字内容管理、数字出版、数字博物馆、远程教育到科学数据管理与网格计算、数字权益管理、信息安全管理与隐私保护等领域。近年来随着互联网的发展,以及物联网等新技术的兴起,Handle系统获得了更加广阔的应用前景。文章最后介绍了Handle系统作为联合国ITu推荐的互联网下一代链接技术,在技术上及管理方式上的最新发展情况,并对其应用前景进行展望。 相似文献
93.
文章分析DOI系统应用关联数据技术的必要性与可行性;基于HTTP的工作原理,对比DOI链接与关联数据URI参引的工作机制;基于实例剖析,详细介绍了目前关联数据应用于DOI系统的两种技术方案和各自特点,并根据IDF的现行技术框架,实验了中文DOI系统的关联数据应用改造;对实际应用中的问题进行总结和思考。 相似文献
94.
介绍了Windows系统中控制面板的相关知识,详细介绍了C＋＋ Builder编写的控制面板组件的原理和具体实现方法。 相似文献
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96.
The role of location and social strength for friendship prediction in location-based social networks
Jorge C. Valverde-Rebaza Mathieu Roche Pascal Poncelet Alneu de Andrade Lopes 《Information processing & management》2018,54(4):475-489
Recent advances in data mining and machine learning techniques are focused on exploiting location data. These advances, combined with the increased availability of location-acquisition technology, have encouraged social networking services to offer to their users different ways to share their location information. These social networks, called location-based social networks (LBSNs), have attracted millions of users and the attention of the research community. One fundamental task in the LBSN context is the friendship prediction due to its role in different applications such as recommendation systems. In the literature exists a variety of friendship prediction methods for LBSNs, but most of them give more importance to the location information of users and disregard the strength of relationships existing between these users. The contributions of this article are threefold, we: 1) carried out a comprehensive survey of methods for friendship prediction in LBSNs and proposed a taxonomy to organize the existing methods; 2) put forward a proposal of five new methods addressing gaps identified in our survey while striving to find a balance between optimizing computational resources and improving the predictive power; and 3) used a comprehensive evaluation to quantify the prediction abilities of ten current methods and our five proposals and selected the top-5 friendship prediction methods for LBSNs. We thus present a general panorama of friendship prediction task in the LBSN domain with balanced depth so as to facilitate research and real-world application design regarding this important issue. 相似文献
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多年来,高职英语教学过分注重语言形式和语言知识的传授,而忽视了对学生跨文化交际能力的培养,因而使学生在实际交流中产生了一定的交际障碍。随着《高职高专教育英语课程教学基本要求》的颁布,高职学生的语言技能和跨文化交际能力的培养得到了突出和深化。在环球英语教程的教材背景下,高职英语教学中跨文化交际的渗透对培养既具有专业技能又具有一定英语综合运用能力的高级技术人才有着重要作用。 相似文献
100.
Broken hypertext links are a frequent problem in the Web. Sometimes the page which a link points to has disappeared forever, but in many other cases the page has simply been moved to another location in the same web site or to another one. In some cases the page besides being moved, is updated, becoming a bit different to the original one but rather similar. In all these cases it can be very useful to have a tool that provides us with pages highly related to the broken link, since we could select the most appropriate one. The relationship between the broken link and its possible linkable pages, can be defined as a function of many factors. In this work we have employed several resources both in the context of the link and in the Web to look for pages related to a broken link. From the resources in the context of a link, we have analyzed several sources of information such as the anchor text, the text surrounding the anchor, the URL and the page containing the link. We have also extracted information about a link from the Web infrastructure such as search engines, Internet archives and social tagging systems. We have combined all of these resources to design a system that recommends pages that can be used to recover the broken link. A novel methodology is presented to evaluate the system without resorting to user judgments, thus increasing the objectivity of the results, and helping to adjust the parameters of the algorithm. We have also compiled a web page collection with true broken links, which has been used to test the full system by humans. 相似文献