共查询到19条相似文献，搜索用时 171 毫秒
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在传统Web服务的中,基于关键词的Web服务匹配缺乏语义支持,搜索效率低.语义Web技术与Web服务的结合,开辟了语义Web服务的研究领域,本文以所提出的匹配策略为主线,围绕语义Web服务层次松弛匹配机制,依次展开服务类别、服务文本描述、服务功能、服务质量四个层次的匹配研究,实现了从语法相似度、语义相似度和QoS相似度上对Web服务的选择. 相似文献
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通过研究Agent技术与语义Web服务技术在应用中结合的方式和Agent在语义Web服务技术体系中需要扮演的角色,以及Agent与语义Web服务结合的具体实现,提出了一种基于Agent的语义Web服务框架。在此框架的原理基础上,利用扩展逻辑C&L意图理论描述了框架中Agent的工作过程以及语义Web服务的内容。 相似文献
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本文是以Web文本信息和Web语义处理为背景,从理论及应用两个层次对教学资源库资源编目方法进行了较为深入的研究,实现教学资源的自动摘要和智能编目,同时分析了关于构造分类字典和教育语义网的构想。 相似文献
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在当前的WebService应用研究中.服务的查找筛选己成为研究的热点.Web服务发现的研究目标是检索效率和自动化程度的提高,语义描述和逻辑推理则是达到该目标的有效途径.本文介绍了语义Web服务,并提出了一种应用语义Web服务筛选算法的Web Service中间件模型,并对中间件模型的服务筛选过程用UML时序图表示,该模型提高了服务查找的查全率和查准率. 相似文献
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立足于语义Web服务的应用研究,在语义Web推理过程逻辑基础描述逻辑之上,研究了将软件工程知识应用于服务发现与匹配的方法.使用基于ORM映射框架的方法实现本体到资源的映射,设计了语义Web服务映射框架,为信息资源的语义沟通能力不足、服务组件的组合困难等问题的解决提供了方法. 相似文献
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刘鲁平 《金华职业技术学院学报》2007,7(4):40-43
针对企业信息化过程中存在的"信息孤岛"现象,提出信息集成解决方案,分析企业信息集成的方式和层次,通过引入Web服务和语义Web技术,构建了企业应用集成的两个应用模型,即基于Web服务的EAI模型和基于语义WEB服务的EAI模型,并阐述了模型的组成结构运行机制,以满足企业应用集成需要. 相似文献
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传统的文本信息过滤算法仅能实现结构对应层次上的判断,无法体现文本的语义.本文介绍一个能对Web页文本信息进行语义过滤的系统,通过分词、生成语义框架和计算框架间相似度,对相似度大于阈值的Web页进行过滤.试验表明,语义过滤能较好地甄别文本的不同观点,准确度较单纯关键字过滤有明显提高. 相似文献
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在语义Web中,用户访问行为模型可以作为本体论共享.如何把Web访问活动转变成为本体论是一个非常关键的问题.为了解决这个技术问题,本文提出了一种在Web使用挖掘中集成模糊逻辑和形式化概念分析的本体论自动生成方法.文章首先对Web使用挖掘以及语义Web和本体论进行了介绍,然后该方法的体系结构及其生成过程也被详细地论述. 相似文献
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Jesper Jensen 《British journal of educational technology : journal of the Council for Educational Technology》2019,50(2):505-517
This paper presents a systematic literature review of research focused on use of Semantic Web technologies in formal educational contexts. Through systematic search, the review has identified 199 research articles, which are examined with the intention of identifying prevalent themes within the body of research within the field of formal educational use of Semantic Web technologies. The themes identified by the review are: (1) Semantic Web ontologies; (2) Efficient distribution, accessibility, retrieval, reuse and combination of educational resources; (3) Linked Data; (4) Semantic Web enhanced virtual learning environments and personalization of learning environments; (5) Semantic Web learning objects; (6) Evaluation, feedback and assessment; (7) Semantic Web services; (8) Pedagogical tools for teachers and students. Furthermore, this review seeks to examine how these themes and the use of Semantic Web technologies in formal education reflects on the ongoing discussion of how pedagogy and technology should interact. The outset of this discussion is a previous study by Dirckinck-Holmfeld, which establishes that there is a tendency to emphasize technology over pedagogy in educational design and development. 相似文献
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This article completes a three-part series on the educational potential of the Semantic Web. Earlier columns in this journal focused on the Semantic Web as an aid to locating information and as an aid to data integration. The focus of this article is on the Semantic Web as an aid to collaboration of many kinds. Various proposals for using the Semantic Web to foster collaboration are reviewed. Also discussed are problems and issues that will determine whether the Semantic Web will succeed in education. 相似文献
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许红梅 《十堰职业技术学院学报》2010,23(2):107-109
语义Web是未来web的发展方向,是信息可以被机器理解和使用的新的信息环境,语义Web的出现彻底改变了web上信息的组织方式,对于各种网络信息应用都将产生巨大影响。本文首先对Semantic Web的概况进行了简要介绍,然后详细分析了语义Web体系的主要支持技术(XML RDF),最后探讨了语义Web技术对网络信息检索的影响。 相似文献
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语义Web与Webservices有很强的互补性,二者的统一构建了新一代Web服务——语义Web服务。该文首先简单介绍了语义Web服务在国内外的研究现状,然后分析了语义Web服务发现的任务,最后给出了OWL—S／UDDI匹配器框架（OUMF）,并提出了分级匹配的服务发现策略。其中,OUMF弥补了UDDI的不足,分级匹配的策略大大节省了服务发现的时间。 相似文献
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Robin D. Morris 《TechTrends》2011,55(1):42-46
The impact of Web 3.0, also known as the Semantic Web, on online learning is yet to be determined as the Semantic Web and
its technologies continue to develop. Online instructors must have a rudimentary understanding of Web 3.0 to prepare for the
next phase of online learning. This paper provides an understandable definition of the Semantic Web and its terminology, and
then explores possible implications of Web 3.0 on online learning. The foundation of the Semantic Web is data integration.
By using metadata, “display only” data is converted to meaningful information which can be located, evaluated, and delivered
by software agents. Web 3.0 technologies will assist online instructors in the areas of course development, learner support,
assessment, and record keeping. Online students will benefit from learning personalization and knowledge construction powered
by the Semantic Web. 相似文献
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研究语义Web服务匹配问题,提高匹配效率。传统Web服务基于关键字匹配,灵活性差,查准率和查全率偏低;语义Web服务引入机器可理解的语义信息,提高了信息共享程度及服务检索成功率,但服务响应慢,系统开销大。为了提高Web服务匹配效率,降低系统成本,提出一种基于语义相似度的Web服务混合匹配策略。首先对语义Web服务匹配问题进行分析,然后建立基于语义相似度的Web服务混合匹配模型,最后在西江物流平台中设计了一个基于语义Web服务的混合匹配框架。实际应用效果表明,混合匹配策略实现了语义Web的更好匹配,为客户提供更为快捷、准确的“寻车配货”服务。 相似文献
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Paul Shabajee Brian McBride Damian Steer Dave Reynolds 《British journal of educational technology : journal of the Council for Educational Technology》2006,37(3):461-477
Singapore has many large and educationally valuable digital collections and is planning the development of many more. These digital collections contain historical, cultural and scientific multimedia objects, along with learning objects. At present, school teachers and pupils find it hard to locate many of these resources using traditional search engines. This paper describes a research investigation into the design and subsequent development of a prototype digital resource discovery portal (Digital Content Exchange) based on Semantic Web technologies, and explores some of the educational issues raised. The research project explored how the features of the Semantic Web might offer valuable additional educational benefits and affordances beyond that of those based on existing information retrieval technologies. 相似文献
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魏建琳 《西安文理学院学报》2011,(4):70-73
从计算机运行的视角对语义网的目标、架构和实现机制做一简单梳理与解析,其目标是让Web上的信息能够被机器理解,从而实现Web信息的自动处理;W3C制定的语义网七层通用框架会实现数据的共享和重用;语义网实现起来牵涉到繁杂的标准与应用问题.虽然语义网的研究还有相当大的障碍有待克服,还不能肯定在未来能否实现,但是它的研究成果已经开始发挥效果,这就是语义网研究的价值. 相似文献
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With the rapid growth of the Web, the volume of information on the Web is increasing exponentially. However, information on the current Web is only understandable to humans, and this makes precise information retrieval difficult. To solve this problem, the Semantic Web was proposed. We must use ontology languages that can assign data the semantics for realizing the Semantic Web. One of the representative ontology languages is the Web ontology language OWL, adopted as a recommendation by the World-Wide Web Consortium （W3C）. OWL includes hierarchical structural information between classes or prop- erties. Therefore, an efficient OWL storage model that considers a hierarchical structure for effective information retrieval on the Semantic Web is required. In this paper we suggest an XPath-based OWL storage （XPOS） model, which includes hierarchical information between classes or properties in XPath form, and enables intuitive and effective information retrieval. Also, we show the comparative evaluation results for the performance of the XPOS model, Sesame, and the XML file system-based storage （XFSS） model, in terms of query processing and ontology updating. 相似文献