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首先,针对关联数据的国内外发展现状和相关技术进展进行研究,并且调研了目前主要的关联数据集,并深入研究了DBPedia数据集、DBLP数据集和CORDIS数据集。接着基于中国科学院集成信息平台CASIIP,同时结合中国科学院研究所群组集成知识平台项目一期、二期的建设情况,充分分析平台语义化扩展方面的需求和可行性,并且在关联数据的基础上提出了CASIIP语义化的扩展解决方案。最后在CASIIP的内容管理组件、搜索组件和综合资源管理组件中利用DBPedia的lookup和Spotlight分别实现了组件语义化扩展。实验证明,该方法合理可行,为CASIIP实现从基础内容发布建站平台软件到语义化集成资源的平台软件发展奠定了基础。 相似文献
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【目的/意义】智慧数据是数据资源价值挖掘的承载,其中语义丰富化方法是促成智慧数据的重要手段。语
义丰富化方法及相关实践为智慧数据建设提供参考与借鉴。【方法/过程】从语义丰富化方法的技术角度出发,梳理
语义丰富化与关系型数据库、本体以及关联数据的关系,继而对语义丰富化在医学健康、数字出版、文化遗产等领
域的应用实践展开分析和归纳。【结果/结论】语义丰富化是利用语义网以及文本挖掘、相似度计算等相关技术将数
字资源中隐含的语义关系显性化,并在不同的资源间构建语义链接,促进数字资源的互通、互联与集成。由于数字
资源语义化层次、粒度与面向领域等存在的差异,智慧数据的实现需要语义丰富化诸多方法的有效集成框架。【创
新/局限】本文分析了数据网络中数字资源向数据资源转化的新方法,但仅局限于语义丰富化在部分领域中的应
用,还需丰富和扩展资料,总结语义丰富化的框架和应用分析。 相似文献
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语义网环境下,信息用户以网络为主要获取渠道,传统叙词表亟须做出相应的改变.文章分析了基于本体模式的网络叙词表构建,提出网络叙词表的发展将大范围地发布为关联数据,实现知识组织体系与资源的自动关联,进行语义检索,网络叙词表的集成与分解有助于实现基于专题或领域的术语服务等. 相似文献
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基于分布式科研项目数据的关联模式挖掘框架 总被引：1，自引：0，他引：1
储存于不同组织实施环节的科研项目数据中隐含了大量有用的关联模式信息,针对科研项目数据的分布性特点,提出了基于采集代理和中心节点的采集挖掘体系框架,一方面依据转换规则库、映射规 则库、元数据参照进行集成、转化、清洗和归一化处理,形成语义一致、面向不同主题的科研项目特征数据;另一方面建立特征属性定义表,利用多维关联规则实现对科研项目关联模式的挖掘分析. 相似文献
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随着互联网的发展,OpenStreetMap(OSM)等基于网络众包平台上的地理信息数据正迅速成为专业地理信息的重要补充。建筑信息模型(BIM)数据成为地理信息的重要数据源。针对多源异构室外、室内空间数据集成困难的问题,本文首先将BIM和OSM数据转换为语义网络数据格式,然后利用标准化的本体建模方法对两者进行映射集成,在此基础上提出一种集成BIM与OSM的城市空间本体建模方法,最终在语义层面实现BIM和OSM数据的集成。实验结果能够有效支持城市空间信息的语义查询与共享,可实现宏观与微观的相辅相成、室外到室内的一体化应用。 相似文献
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针对当前非物质文化遗产分类组织方法的不足,提出一个基于关联数据的非物质文化遗产语义化组织框架。通过构建非物质文化遗产本体描述模型,实现非物质文化遗产知识元及其关联关系的语义化描述,在其基础上,基于关联数据所采用的RDF模型与链接机制实现了非物质文化遗产知识元以及知识元之间关联关系的语义化整合与组织。 相似文献
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本文从对多结构化客户数据集成和预处理的成效不足、挖掘过程缺乏语义情景和上下文的支撑,从而所获取的客户知识模式质量不高等问题出发,提出了一种基于语义集成的客户知识挖掘模型.该模型充分利用了本体、语义集成等方法和技术,提高对数据语义分析和处理的能力,实现智能化客户知识挖掘过程,从而获取高质量的客户知识模式. 相似文献
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Marjorie Armstrong-Stassen Margaret Landstrom Ramona Lumpkin 《The Information Society》1998,14(2):153-164
This study examined how students who had no prior experience with videoconferencing would react to the use of videoconferencing as an instructional medium. Students enrolled in seven different courses completed a questionnaire at the beginning of the semester and again at the end of the semester. Students at the origination and remote sites did not differ in their reactions toward videoconferencing but there was a significant difference for gender. Women reacted less favorably to videoconferencing. Compared to the beginning of the semester, students reported significantly less positive attitudes toward taking a course through videoconferencing at the end of the semester. There were no significant differences in students' attitudes toward videoconferencing across courses at the beginning of the semester but there were significant differences across the courses at the end of the semester. The results suggest the need for better preparation for both students and instructors. 相似文献
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A joint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology his co-workers from Norway US Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells suggesting that China's projected climate warming could decrease the pest's numbers. The study was published in Proceedings of the National Academy of Sciences on September .…… 《中国科学院院刊(英文版)》2008,22(1):6-7
Ajoint study by Prof. ZHANG Zhibin from the CAS Institute of Zoology and his co-workers from Norway, US and Swiss have indicated that historical outbreaks of migratory locusts in China were associated with cold spells, suggesting that China＇s projected climate warming could decrease the pest＇s numbers. The study was published in Proceedings of theNational Academy of Sciences on 17 September, 2007. 相似文献
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Caroline Haythornthwaite 《The Information Society》2001,17(3):211-226
A computer-mediated group is a complex entity whose members exchange many types of information via multiple means of communication in pursuit of goals specific to their environment. Over time, they coordinate technical features of media with locally enacted use to achieve a viable working arrangement. To explore this complex interaction, a case study is presented of the social networks of interactions and media use among members of a class of computer-supported distance learners. Results show how group structures associated with project teams dominated who communicated with whom, about what, and via which media over the term, and how media came to occupy their own communication niches: Webboard for diffuse class-wide communication; Internet Relay Chat more to named others but still for general communication across the class; and e-mail primarily for intrateam communication. Face-to-face interaction, occurring only during a short on-campus session, appears to have had a catalytic effect on social and emotional exchanges. Results suggest the need to structure exchanges to balance class-wide sharing of ideas with subgroup interactions that facilitate project completion, and to provide media that support these two modes of interaction. 相似文献
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《中国科学院院刊(英文版)》2008,22(1):2-3
CAS should stick to the principle of rendering service to, and giving impetus for, the development of China＇s science enterprise by making S＆T innovations, said CAS President LU Yongxiang. The CAS president made the remarks in a recent talk to communicate the gist of the winter session of the Party＇s Leading-member Group at CAS, which was held from 7 to 11 January in Beijing. 相似文献
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Electronic data interchange (EDI) provides means for interorganizational communication, creates network externalities, requires an advanced information technology (IT) infrastructure, and relies on standards. In the diffusion of such innovations, institutional involvement is imperative. Such institutions contain governmental agencies, national and global standardization organizations, local government, and nonprofit private organizations like industry associations. The last type of organizations we call intermediating institutions. They intermediate or coordinate ("inscribe") the activities of a group of would-be adopters. Unfortunately, little is known of how these organizations shape the EDI diffusion trajectory. In this article we examine one specific type of intermediating organizations?industry associations?and how they advanced the EDI diffusion process in the grocery sectors of Hong Kong, Denmark and Finland. We identify six institutional measures, placed into a matrix formed by the mode of involvement (influence vs. regulation) and the type of diffusion force (supply push vs. demand pull), that can be mobilized to further the EDI diffusion. Industry associations were found to be active users of all these measures to varying degrees. Their role was critical especially in knowledge building, knowledge deployment, and standard setting. Furthermore, institutional involvement varied due to policy and cultural contingencies and power dependencies. 相似文献
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《中国科学院院刊(英文版)》2008,22(1)
With great care, Dr. ZHOU Zhonghe takes out a package wrapped by cotton tissue from a drawer and says: "This is the gem of our collections: the fossil of a bird that lived 125 million years ago!" Then, pointing at a tiny mound, he explains: "Look, this is the claw and that is the head. It was in the egg shell and ready to hatch ... The species fell into a family of waterside inhabitants." 相似文献
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Puay Tang 《The Information Society》1998,14(1):19-31
The increasing prospects of digital piracy has prompted the perceived need by electronic publishers to adopt technical systems of protection, and governments to reform their copyright laws. This article is a preliminary study of the management of intellectual property by electronic publishers, defined as those involved in the production of online databases, and CD-ROMs. It focuses on three main issues: (1) how electronic publishers view the increasing threat of piracy; (2) the methods of protection employed to protect intellectual property in digital format; and (3) the importance of technological protection of intellectual property in electronic publications. The analysis is based on a sample of 23 UK electronic publishers. The interviews revealed an interesting assortment of protection methods and did not show that technological protection was a preferred way. Instead, the means of protection, in addition to copyright law, comprised niche markets, pricing, trust, bad publicity, and nontechnical and technical means. 相似文献
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Milton Mueller 《The Information Society》2001,17(3):151-163
Long-standing conflict between domain name registrants and trademark holders prompted the Internet Corporation for Assigned Names and Numbers (ICANN) to create a global, mandatory arbitration procedure known as the Uniform Dispute Resolution Policy (UDRP). The UDRP has been used in 2166 cases involving 3938 domain names as of 1 November 2000. The policy gives the initiator of a complaint, generally a trademark holder, the right to choose which ICANN-accredited dispute resolution service provider (RSP) will handle the case. During the preparation of the UDRP,some feared that complainant selection would lead to "forum shopping" that might bias the results. This article performs a statistical assessment of the forum-shopping thesis and finds support for it. There are statistically significant differences in the various RSPs' propensity to take away names from defendants; there are also major differences in the number of cases brought to each RSP. RSPs who take away names have the larger share of cases. The study examines other variables that might explain differences in market share, such as price, the plaintiff's nationality, or the time taken to decide a case. It finds that nationality and time also are correlated with market share. The study concludes that shopping for a favorable outcome is an important factor in the UDRP. 相似文献
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Prof. Raymond C.K. Chen a neuropsychologist with the CAS Institute of Psychology has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology.…… 《中国科学院院刊(英文版)》2008,22(1):15-15
Prof. Raymond C.K. Chen, a neuropsychologist with the CAS Institute of Psychology, has made novel progress in his studies of schizophrenia. His work has been reported by a recent issue of Behavioural Neurology. 相似文献
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《中国科学院院刊(英文版)》2014,(3)
<正>In Xishuangbanna,one of China’s most biodiverse regions,landscape has changed dramatically during the past three decades due to the conversion of tropical rainforest to rubber plantations.In steep areas,terraces are often constructed before planting rubber trees,which causes two important changes in the soil:the destabilization of soil in the bench terraces and the increased vulnerability of unvegetated riser faces to erosion.Few studies have documented the nature and intensity of erosion on bench terraces.Prof.LIU Wenjie and his colleagues from the Xishuangbanna Tropical Botanical Garden(XTBG)conducted a study in Menglun County(21°5′39″N,101°15′55″E),Xishuangbanna to evaluate the influence 相似文献