共查询到20条相似文献，搜索用时 62 毫秒
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知识管理中本体演化研究 总被引：3，自引：1，他引：3
领域知识和术语的复杂性和多样性是影响知识管理系统成功的关键。本体将在开放式知识管理系统中起到至关重要的作用 ,它通过定义精确的共享术语 ,以提供某一特定领域可重用的知识。但是这些知识并不是静态的 ,而是随着时间的推移不断演化。领域的改变、自适应不同的任务、或概念模型的改变都要求本体的变更。本体演化的支持在本体的分布式开发和应用中非常重要。本文首先对知识管理中本体演化的原因和所带来的问题进行分析 ,然后讨论了本体演化管理的系统框架和应用实例 ,着重强调了本体标识和本体变化机制的定义 ,并对今后的研究工作进行了展望 相似文献
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基于本体的知识管理关键技术研究 总被引：14，自引：0，他引：14
目前知识管理已经成为企事业提高技术、竞争、商务和策略智能的重要手段。但它们存在共同的不足:系统的动态参与性程度不够,表现为系统的知识只能被静态取用和系统的维护是封闭的。本文提出基于本体的开放知识管理方法OOKM(Ontology2basedOpenKnowledgeManagement),旨在构建一个三层结构的知识管理系统。该系统以开放性为核心,从三维———理解的共享型建立、知识的开放性集成和本体知识的(半)自动化构建,分多个层次系统化地研究了知识管理系统中的开放性实现。首先提出了一种基于本体的开放知识管理系统框架,然后讨论OOKM的关键技术,包括本体学习和本体演化技术。 相似文献
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根据IETM的应用现状和CSDB的特点,提出智能化IETM系统构建策略,即在CSDB实例数据重用的基础上,通过定义DM实例与本体实体之间的映射关系构建系统本体库。同时为保证智能化IETM信息检索的准确性和及时性,重点对其知识演化问题进行研究,设计本体库演化与实例库演化并行处理的知识演化模式,并详细介绍这两部分演化活动的主要处理过程和功能模块。最后,以DM实例的添加为例,演示该知识演化模式在保证系统知识演化一致性上所采取的交互与处理活动。 相似文献
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近年来国际学术界在本体对应研究方面呈现三个主要特征:一是投入了更多关注,使相关研究日臻成熟;二是在开放语义网络环境下,研究人员更青睐于多本体的匹配与对应,并且本体对应已成为学术界构建适于分布式网络结构的多本体协同系统的主要手段;三是越来越多的研究成果已经从基础理论研究转向了针对具体问题的实证研究。但开放性、分布式的语义Web环境对现有不同本体间的协调应用提出了挑战。通过对2000年以来国际学术界关于本体协调相关文献和研究成果的梳理,阐明了以本体映射为核心的本体协调各要素之间的关系,并对本体合并、本体集成与本体对应三条本体协调主要发展路径的前沿热点进行了分析,指出未来本体协调的相关研究将继续沿着"本体构建→本体合并→本体集成→本体对应"这一总体路径向前发展。 相似文献
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罗家佳 《图书馆理论与实践》2006,(4):98-100
为了实现与传统的基于关键词的检索有本质区别的内容检索，许多本体系统应运而生，WebKB-2就是其中之一。它将Word-Netl．7和其它的本体系统整合形成了一个共享知识库，允许用户通过网络对知识库进行维护。本文介绍了webKB-2的构建、雒护和应用，以及webKB-2本体系统内的各项元素、要求，并与现在的本体系统做了对比分析，最后对本体系统构建提出了建议。 相似文献
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SUMO——顶级本体的介绍与启示 总被引：1，自引：0，他引：1
近年来,人们越来越多地来研究本体以及语义网。顶级本体是高层的独立于领域的本体,它使完全相异的系统可以使用一个共同的知识库。顶层本体是各领域本体的基础。文章介绍了顶层本体项目——SUMO产生的背景及目前发展的状况;分析了其特点,并且对其创建方法、结构设计、顶层结构、应用与服务等进行了阐述。 相似文献
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《Slavic & East European Information Resources》2013,14(1-2):123-143
ABSTRACT The article examines the most important periodicals of ethnic minorities in Poland. After 1989, many ethnic groups (e.g., Germans and Romanies) were allowed to publish journals and newspapers for the first time since the end of World War II. The publications examined show the rich cultural life of the various ethnic groups as well as their current status in Poland. In addition to popular titles, some scholarly publications are also discussed. 相似文献
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Jon C. Giullian 《Slavic & East European Information Resources》2013,14(3):278-284
The author answers a reference question on bibliographic sources for the Ukrainian periodical press 1840–1850. Helpful publications include bibliographies, guides, and library catalogs. These potentially make mention of revolutionary developments in Hungary (such as the Twelve Points paragraph of the Demands of the Hungarian Nation in March 1848, the subsequent April Laws, and Hungary's declaration of independence in April 1949), and elsewhere in the Hapsburg Empire. 相似文献
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Nadia Zavorotna 《Slavic & East European Information Resources》2013,14(1-2):90-96
The author describes the Slavic Humanities Index, a bibliographic database of scholarly and cultural articles on subjects including history; literature; language teaching; linguistics; philosophy; ethnology; performing arts; and cultural, borderland, and regional studies. She discusses its development, its current form and functionality, and plans for the future. 相似文献
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《Slavic & East European Information Resources》2013,14(2-3):69-88
SUMMARY This article discusses Jewish book publishing in most of the Soviet Union's successor states after 1990. All publications on Jewish history, culture, traditions, and religion (Judaism) are included under this rubric. In addition to scholarly and educational publications, fiction translated from Yiddish and Hebrew, and “Russian-Jewish literature” are also included. The author provides statistics and discusses basic themes, linguistic issues, and problems encountered in the post-Soviet states. The article lists different publishers and organizations involved in Jewish book publishing. 相似文献
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《Journal of Web Librarianship》2013,7(3):169-181
This article describes a study of the two most popular plagiarism-detection software platforms available on today's market—Turnitin (http://www.turnitin.com/static/index.html) and SafeAssign (http://www.safeassign.com/). After a brief discussion of plagiarism's relevance to librarians, the authors examine plagiarism-detection methodology and conduct a review of the current literature regarding plagiarism-detection efficacy. To evaluate detection efficacy for Turnitin and SafeAssign, the authors constructed a brief study in which twenty sample papers containing portions of plagiarized material were submitted to each platform. The results show that Turnitin had the highest overall success at plagiarism detection with an 82.4 percent detection rate. Additionally, both platforms had a combined false-positive detection rate of 16.8 percent. The authors conclude that close review of material suspected of plagiarism is still essential for proper identification. 相似文献
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翟中文 《图书馆工作与研究》2011,(9):71-74
本文选择了国内外几个典型的引文数据库,如:美国《艺术与人文科学引文索引》、《社会科学引文索引》、中国的《中文社会科学引文索引》、《中国科技论文引文分析数据库》、中国科学引文数据库等,并对其收录范围、来源文献的学科分布、更新频率等方面进行了比较研究,对今后我国引文数据库的建设提出了一些建议。 相似文献
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《Slavic & East European Information Resources》2013,14(1-2):149-154
ABSTRACT The article describes the development and use of the database BAZTECH: Polish Technical Journal Contents. The database indexes Polish-language scientific and technical journals, and is available free-of-charge on the Internet. 相似文献
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《Slavic & East European Information Resources》2013,14(3-4):111-125
Abstract The Russian government is exerting increasing control over the country's media, although the media are resisting. This government-media conflict is relevant to Western academics and libraries, because the variety and quality of Russian periodicals is at stake. In addition, if the media are constrained, publishers of books are likely to experience restrictions, too. The difficulties the government is having in controlling the media, however, are a measure of how much Russia has changed. At the same time this conflict is occurring, book publishing is thriving. Official statistics show the number of titles published surpassed even the previous record set in 1977. Planning is in progress to restructure the state book industry sector, including publishing, printing and distribution. Book prices have increased more rapidly than inflation, and postage costs have also increased. Russian Press Service is doing its best to keep its prices to Western libraries down. 相似文献
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SUMMARY Describing her experience of establishing an Electronic Document Delivery Service at the library of the Lahore University of Management Sciences (LUMS), the author discusses the various issues, which significantly effect the net cost, delivery time and management process of providing such a service by a library in Pakistan. While presenting multiple options leading to an effective solution, the advantages and disadvantages of each option have been highlighted, and their implications, with particular reference to Pakistani libraries, have been discussed. The various points to be considered by Pakistani Librarians, while selecting a commercial Document Provider, have also been discussed. In the end, the author discusses the potential of using the Electronic Document Delivery facility as a time-saving and cost-effective tool for Resource Sharing among libraries in Pakistan. 相似文献
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ABSTRACT No one can predict what document delivery will look like in the future, but librarians must guard patron confidentiality even in an electronic environment. This time it isn't an easily solved problem like finding another way of recording circulation than handwriting patron names onto circulation cards, it is instead the tracking of personal information attached to electronic text supplied by publishers that is a potential violator of patron privacy. Unmonitored in their efforts to protect their intellectual property without considering the rights of their customers, publishers could pose a threat to their customers' privacy, thus limiting their legal right of free access to information. Although encryption technology would appear to provide an answer to the confidentiality problem, it is not a panacea and that must be considered as the National Information Infrastructure is developed. Librarians need to stay alert to the developments in electronic publishing to be sure their concerns for patron privacy continue to be heard. 相似文献