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浅谈网络资源的组织 总被引：1，自引：0，他引：1
The rapid growth of Intemet resources has brought great inconvenience to users in searching for useful information. How to organize Internet resources effectively has become a problem of concern to information organizers and users. This article analyzes the essential impact of Intemet resources on information organization, and discusses the difficulties of Intemet resources organization. Finally, it introduces some research examples of Intemet resources organization in foreign countries. 相似文献
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《中国科学院院刊(英文版)》2014,(3)
<正>May 15,2014Publicly funded scientific research is an important means for the society to create knowledge,support innovation,and promote growth.Research articles from such research are knowledge resources to be shared by all.Their open access will facilitate the dissemination and utilization of knowledge,turn the knowledge produced by public investment effectively into innovation and development capabilities of the society,ensure that public knowledge benefi ts all,and strengthen the innovation driven development strategy.Therefore,Chinese Academy of Sciences(CAS)issues at the present stage the following open access policy for articles from publicly funded scientifi c research projects:CAS requires its researchers and graduate students to 相似文献
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《中国科学院院刊(英文版)》2012,26(2):123
The Chinese Academy of Sciences convened its Annual Work Conference in Beijing from January 16 to 18, 2012. At the opening session, CAS President BAI Chunli delivered a work report to more than 400 officials from CAS institutions across the nation, looking back on the Academy’s major achievements in 2011 and blueprinting its strategic development for the year ahead. He urged CAS institutes to further concentrate their research 相似文献
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管窥微观信息经济学 总被引：1，自引：0，他引：1
This essay examines the origin and development of micro-economics of information from the perspective of the development history of western economies. It considers the emergence and development of micro-economies of information as a challenge to the traditional economics. Based on this, the essay expounds the focal point of the research on micro-economics of information and its significance to China' s reform of economic system and the informatization of economy. 相似文献
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Zhang Qingsong 《中国科学院院刊(英文版)》2003,17(2):96-100
The Great Wall Station,China?s first base forAntarctic research, islocated in the KingGeorge Island, westAntarctica, becomingoperational sinceFebruary 1985.Chinese scientists began in-volving in the Antarctic re-search in 1980. As the firststep, some 40 Chinese scientistswere sent to Antarctic stations ofAustralia and other countries duringthe period from 1980 to1984. Then,China established two Antarctic sta-tions of its own, and purchased anicebreaker, enabling China to carryon its own… 相似文献
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SONG Jianlan 《中国科学院院刊(英文版)》2018,(2)
正Following its successful efforts to send and operate four satellites for science research,the Chinese Academy of Sciences(CAS)unveiled on July 4th four more space missions,in quest for secrets of the cosmos and the solar system,from which we have come and,on which we have lived. 相似文献
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《中国科学院院刊(英文版)》2005,19(4):207-207
Supported by the US National Science Foundation and the National Natural Science Foundation of China, a rare and endangered fern, Isoetes hypsophila, was discovered by a Sino-US research team headed by Prof. SUN Hang from the CAS Kunming Institute of Botany (KIB) and Dr. David E. Boufford from Harvard University in a recent trip to Jiulong, Sichuan, during its botanical survey in the Hengduan Mountains in south China. Scientists say the plant is found for the first time in the region. 相似文献
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《中国科学院院刊(英文版)》2012,26(2):150-151
Mesoporous materials have attracted a great deal of attention due to their extremely high surface area, uniform and tunable pore structure (2-50nm in diameter), and have been investigated extensively since its invention. Unfortunately, their catalytic properties are far away from the expectation due to their amorphous and inert framework and poor stability. This research project is aimed at the design and synthesis of mesoporous-based composites, their catalytic properties and application exploration. As the main contributors to the achievements, 相似文献
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ZhaoJingtai 《中国科学院院刊(英文版)》2004,18(2):76-77
The cooperation between Zhao Jingtai and the Max Planck Institute for Chemical Physics of Solids was initiated immediately after the research field Inorganic Chemistry (headed by Rudiger Kniep) started its work in Dresden. The first contact was established when Zhao Jingtai came from the Xiamen University as a Max Planck fellow. At that time, the chemistry of the intermetallic compounds of rare-earth metals was chosen as a topic of joint investigations with Yuri Grin. Later, the solid state chemistry of the borophosphates was added to the program of concerted research in the group of Zhao Jingtai and the Max Planck Institute for Chemical Physics of Solids. The cooperation was intensified after the move of Zhao Jingtai to the Shanghai Institute of Ceramics and the establishment of an Inorganic Materials Chemistry and Physics Group there. The results of the investigations performed from 1999 to 2003 were published in more than 25 scientific papers and more than ten contributions to scientific conferences. 相似文献
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从信息资源的分类看搜索引擎的优化 总被引：1，自引：0，他引：1
The traditional infon-nation resources are classified according to scientificness and practicality. However,the classification of Internet information resources pays more attention to practicality while paying equal attention to scien-tificness. This article, starting from the classification methods of the traditional information resources and Intemet informs-lion resources, discusses how to optimize the search engines in classified catalogue retrieval and multiple keyword retrieval. 相似文献
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基于Web使用挖掘的用户个性化服务研究 总被引：5，自引：0，他引：5
万维网是一个巨大的全球性的信息服务中心。随着诸如新闻、广告、消费信息、金融管理、远程教育、政府网站、电子商务等的日益普及 ,提供网络信息服务的竞争日益激烈。谁能更方便地为用户提供所需要的网络资源 ;谁能提供更贴近用户的个性化服务 ;谁能更快捷抓住用户新的需求 ,是能否成功为用户提供网络业务的关键。现代社会的竞争趋势要求对因特网上大量出现和产生的信息进行实时和深层次的分析 ,虽然借助于强大的搜索引擎和搜索技术 ,用户仍然在分析和使用这些信息时面临许多困难。同时基于ＷＷＷ的Ｗｅｂ站点设计、Ｗｅｂ服务设计、Ｗｅｂ… 相似文献
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基于页面链接挖掘的Web教育信息检索 总被引：2，自引：0，他引：2
教育信息检索是教育信息应用于教育科研与教育教学的关键环节，而Web页面链接挖掘是对Web页面之间的链接结构进行挖掘。本文对Web链接结构挖掘在教育信息检索方面上进行了研究，介绍了Web挖掘的概念、分类，以及HITS与Page—rank等算法，并提出了一种基于样本模式特征提取的信息检索方法。 相似文献
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网络信息挖掘技术及其应用研究 总被引：7，自引：0，他引：7
网络信息挖掘是网络信息处理领域中的一项新技术，是指在大量训练样本的基础上，得到数据对旬间的内在特性，并以此为依据在网络资源中进行有目的的信息提取。本文介绍了网络信息挖掘的含义，研究了网络信息挖掘的步骤、类型及其关键技术，并指出了网络信息挖掘的应用前提。 相似文献
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面对网络中日益丰富的用户评论信息,利用评论挖掘技术对其进行智能化的自动分析,获取非传统意义上的动态竞争情报,对于企业竞争战略的制定和竞争优势的保持具有重要意义。文章在详细分析Web评价挖掘技术研究现状和当前竞争情报分析存在问题的基础上,将Web评论挖掘融入企业竞争情报分析之中,构建了基于Web评论挖掘的动态竞争情报分析模型,阐述了模型中各个模块的主要功能及其实现策略。 相似文献
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网络信息挖掘是从丰富的网络信息源和用户使用网络的行为数据中抽取有用的模式和隐含信息。文章分析了网络信息挖掘结果评价的必要性,介绍了网络信息挖掘常用方法的效果评价的做法与相关指标,构建了网络信息挖掘效果评价的体系,并指出应该注意的一些问题。 相似文献
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网络信息挖掘系统评价初探 总被引：1，自引：0，他引：1
随着电子商务的蓬勃兴起 ,许多企业已经开始意识到其所拥有的丰富的信息资源在商业决策中具有潜在的巨大商业价值。更好的决策支持需求和企业电子商务的开展正推动着网络信息挖掘系统的研究与开发。鉴于网络信息挖掘是在数据挖掘的基础上发展起来的 ,因此对于网络信息挖掘系统的基本问题 ,本文仍将利用数据挖掘系统的基本理论来描述。目前 ,由于网络信息挖掘系统的发展正在起步阶段 ,因此它的分类还无法达到数据挖掘系统分类那样细致。具体而言 ,对网络信息挖掘系统分类可以从商业能力、挖掘数据类型、挖掘功能、数据分析方法和应用领域角度… 相似文献
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随着Internet的迅速发展及Web的全球普及,数据挖掘技术已经在各个领域、各个行业展现了它的巨大作用。通过分析Web及数据挖掘的特点,列举出数据挖掘在Web基础上的具体应用。 相似文献