一种基于服务质量的网格服务发现机制     

李静 《重庆第二师范学院学报》2007,20(6):54-56

网格服务体系结构的出现对网格服务发现提出了挑战,UDDI上基于关键词和简单分类的服务发现机制已经不能很好满足需要.本文在分析现有相关研究的基础上,提出了基于服务质量的网格服务发现机制,引入服务质量相似度的概念,为网格服务发现提供了一种有效可行的方法.  相似文献   

高校口语教学中“发现学习”与“接受学习”的综合比较运用     

邢燕萍 《楚雄师范学院学报》2007,22(5):34-38

从理论上分析比较现代认知学派的“发现学习”和“接受学习”,利用高校口语教学实践中的教学实例,能进一步具体综合分析两大理论在实际运用中体现出来的特点、优势和不足,从而指导教学中对两大理论的综合运用,实现高校口语教学的最优化。  相似文献   

Web Design Trends in Academic Libraries—A Longitudinal Study     

David J. Comeaux 《Journal of Web Librarianship》2017,11(1):1-15

This study examines several key design elements of 37 academic library Web sites (members of the Association of Southeastern Research Libraries) and how they have changed between 2012 and 2015. While several studies have reviewed library Web sites looking for common design elements and content, the present work may be the first to look at the design elements of a large group of library Web sites over time. This study has two main goals: to present an objective analysis of the navigation and search interface designs at research university library Web sites, and to assess the usage of Web-scale discovery systems and content management systems in libraries. Other areas explored include when sites were most recently redesigned and whether sites have adopted a mobile-friendly, responsive design. Notable findings include a very high usage of Web-scale discovery systems, an increasing adoption of open source content management systems, and increasing implementation of responsive design. Also noted was a strong and growing standardization in navigation design. This study concludes with a review of the trends and discussion of current design patterns in academic library Web sites.  相似文献   

Managing Discovery and Linking Services     

Leanna Jantzi  Jennifer Richard  Sandra Wong 《期刊图书馆员》2016,70(1-4):184-197

There is a growing trend toward a consolidation of services for electronic resources management, A–Z journal listings, full text link resolving, and discovery services under a single service provider. In many cases, the adoption of a discovery service from a provider that is not the same as the libraries’ existing link resolver service means managing multiple knowledgebases. In this session, three librarians gave an overview of their experiences and strategies for maintaining separate link resolving and discovery services in lieu of adopting a full suite of services from a single service provider. Each speaker presented a case study on the advantages and challenges of managing their chosen discovery service: EBSCO Discovery Service, Ex Libris’ Primo and ProQuest’s Summon, in conjunction with the CUFTS/GODOT open source knowledgebase and link resolver service.  相似文献   

基于粗糙集理论的知识发现     

邓惠云  万伟  蔡用  陈熹 《江西教育学院学报》2006,27(6):44-46

粗糙集理论是一种新型的处理模糊和不确定知识的数学工具。目前已在人工智能、知识与数据发现、模式识别与分类等方面得到了广泛应用。介绍Rough Set理论的基本思想及分析了粗糙集方法的特点,描述一种基于粗糙集理论的知识发现步骤,并以实例作出说明。  相似文献   

语言的邂逅--新月派的一条原则与一首诗     

杨茜 《安康学院学报》2005,17(3):34-36,40

借鉴"形式主义"学派的诗歌理论,以"新月派"的一条原则与一首诗为个案,探讨了诗的审美特质的生成,在于独特的"语言化"现实:语言的邂逅--一种"语言"出人意料的不期然而然的别开生面,从而导致对"生活"的重新发现或者说创造.  相似文献   

An efficient algorithm for mining closed itemsets     

刘君强  潘云鹤 《Journal of Zhejiang University. Science. B》2004,(1)

INTRODUCTIONMiningfrequentitemsetsisafundamentalandessentialprobleminmanydataminingapplica tionsincludingthediscoveryofassociationrules,strongrules,correlations,sequentialrules,epi sodes,multi dimensionalpatterns,andmanyoth erimportantdiscoverytasks (AgarwalandSri kant,1994;Wangetal.,2 0 0 2 ) .Mostalgo rithmsproposedsofarworkwellondatasetswherethesizesofitemsetsarerelativelysmall.Howev er,theyusuallycrashwithdensedatasetswheretheitemsetsizesarelarge.Suchdatasetsincludethosecomposedofque…  相似文献   

T. rex,the Crater of Doom,and the Nature of Scientific Discovery     

Lawson  Anton E 《Science & Education》2004,13(3):155-177

Working from the 1970s to the early 1990s, Walter Alvarez and his research teamsought the cause of the mass extinction that claimed the dinosaurs 65 million years ago. The present paper discusses thatresearch in terms of eight puzzling observations, eight episodes of hypothetico-predictive reasoning, enumerative induction,and Jung's interrogative theory of scientific discovery. The Alvarez case history paints scientific discovery as a process in whichcausal questions are raised and answered through the creative use of analogical reasoning followed by an equally creative process ofhypothesis testing in which predicted and observed results are compared. According to this account, puzzling observations, causalhypotheses, and imagined tests drive investigations and the search for evidence. Two implications follow. The firstconcerns the education of new scientists and science education researchers and the need to more clearlydifferentiate hypotheses from predictions in the research process. The second concerns standard science classroom instruction that shouldmore frequently engage students in open inquiries that raise causal questions and encourage the generation of alternative causalhypotheses, which can then be explicitly tested in ahypothetico-predictive fashion.  相似文献   

数字图书馆中的知识发现   总被引：23，自引：0，他引：23  

韩惠琴  刘柏嵩 《情报学报》2001,20(3):323-330

本文针对数字图书馆特点 ,提出将知识发现技术应用于数字图书馆的信息发现和信息提供的方案 ,并介绍和分析了几种具体的应用形式 ,对我们今后实现数字图书馆原型有较大的启迪作用  相似文献   

文本挖掘、数据挖掘和知识管理 ——二十一世纪的智能信息处理   总被引：39，自引：4，他引：35  

韩客松  王永成 《情报学报》2001,20(1):100-104

本文首先介绍了数据挖掘、文本挖掘和知识管理等概念，然后从技术角度出发，将知识管理划分为知识库、知识共享和知识发现三个阶段，分析了作为最高阶段的知识发现的关键技术和意义，最后指出在文本中进行知识发现是新世纪智能信息处理的重要方向。  相似文献