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1.
2005年是中国电子商务市场风云变幻的一年,其中有阿里巴巴并购中国雅虎,百度在美国纳斯达克成功上市,腾讯QQ全面进军C to C电子商务领域,当当网也对外宣称进军C to C电子商务领域。这些新闻让人们对电子商务的信心倍增,仿佛又看到了电子商务的远大前景。许多外国风险投资商纷  相似文献   

2.
智能互联网   总被引:4,自引:0,他引:4  
Intelligent Web functions essentially as an autonomic entity. The Web automatically regulates the func-tions and cooperation of related Web sites and available application services. In the paper we will discuss the key is-sues related to the intelligent Web, such as semantic representation, Agent, resource management, service manage-ment, Web mininlz and so on.  相似文献   

3.
There are hidden and rich information for data mining in the topology of topic-specific websites. A new topic-specific association rules mining algorithm is proposed to further the research on this area. The key idea is to analyze the frequent hyperlinked relati ons between pages of different topics. In the topic-specific area, if pages of onetopic are frequently hyperlinked by pages of another topic, we consider the two topics are relevant. Also, if pages oftwo different topics are frequently hyperlinked together by pages of the other topic, we consider the two topics are relevant.The initial experiments show that this algorithm performs quite well while guiding the topic-specific crawling agent and it can be applied to the further discovery and mining on the topic-specific website.  相似文献   

4.
With the advent and proliferation of web services, quality of service serves as a benchmark to differentiate and select the services. Because trust has been regarded as an essential security relationship within a distributed network environment, quality evaluation of services from the viewpoint of trust presents a significant trend in decision support for selecting service over Internet. Unfortunately, the current research in the context of web services does not accurately reflect the randomness and fuzziness of trust, the basic issue in related research about trust. In this paper, we designed two kinds of trust cloud based on cloud model theory to describe the randomness and fuzziness of trust factors. Furthermore, a formalized calculation was provided to obtain the trust degree. To our knowledge, this is the first investigation into trust of web Service considering the integration of randomness and fuzziness, and applying the cloud model to quantitative evaluation of trust in the field of web services.  相似文献   

5.
陈伟 《软件》2000,(11):5-7
自以Yahoo!为代表的门户网站、以Ebay为代表的拍卖网站、以Amazon为代表的BtoC电子商务网站,以Ariba为代表的BtoB电子商务网站凤靡之后,美国Nasdaq证券市场一片低迷。网络时代的黄金时代过去了吗?这是个仁者见仁、智者见智的问题。但最近美国兴起的以Napster为代表的Peer to Peer网站或网络技术认为是真正代表了互联网发展的趋势之一。Napster提供一个客户端  相似文献   

6.
《电脑爱好者》2008,(16):75-75
短文阅读北京奥运会赛时官方网站正式上线你是否通过互联网关注最新的奥运咨讯呢?Releasing information in five languages—C hinese,English,French,Spanish and Arabic—the official website serves as a major c hannel for netizens worldwide to obtain information on the competitions of the Beijing Olympics and an important window for countries and people around the world to understand Beijing and China.  相似文献   

7.
乔德敏  焦毅霞 《福建电脑》2009,25(1):112-113
本文介绍了甘肃省统计信息网站,针对目前存在的一些问题,提出了一种新的统计信息网站设计——网站集群体系。通过网站集群系统架构,可以提高整个系统的服务效率,保障系统性能和内容扩展;在集群中,用户共享公共数据访问接口,有效的提高网站的安全性,实现各网站数据库的互访及基础资料库的集中共享。  相似文献   

8.
该文是省级课题《基于Web共享的高职电子商务专业校本资源库建设与研究》(课题编号:JXJG-10-43-2)的阶段性成果。首先介绍了三种网站建设的模式,并对三种模式进行了分析与比较;然后对网站内核管理系统的网页模板思想和内容模型思想及其技术实现进行了详细地介绍,最后指出了网站内核管理系统的不足之处。  相似文献   

9.
酷网千寻     
《电脑爱好者》2012,(7):40-40
我的秘密只有你能解 网络上,我们可以将心里话加密,然后给某些人提供阅读密码,输入密码才能看到具体内容。Ncode.Me就是一个加密文字的网站,登录网站后,在Text to encodeT输入自己的心里话,在Password中输入密码,  相似文献   

10.
海云飞 《大众硬件》2004,(1):157-158,156
背景:[H]ardocp,这个标记大家见了一定不会陌生,因为在国内众多的电脑硬件网站新闻中,都有许多标有这样标记的新闻照片;有时候会简写成一个大大的黑色“[H]”,给人留下的印象尤为深刻。 [H]ardocp是世界上著名的电脑硬件网站,在国外被称为“硬件狂热者的网站”,因为其经常做一些疯狂的测试,比如液氮冷却极低温度下处理器的超频测试、奔腾4处理器揭盖超频等等,让人目瞪口呆、惊诧不已的测试。  相似文献   

11.
Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.  相似文献   

12.
European Community policy and the market   总被引:1,自引:0,他引:1  
Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.  相似文献   

13.
融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。  相似文献   

14.
Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.  相似文献   

15.
This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.  相似文献   

16.
Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008  相似文献   

17.
Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.  相似文献   

18.
This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)SM and Team Software Process (TSP){SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.  相似文献   

19.
基于复小波噪声方差显著修正的SAR图像去噪   总被引:4,自引:1,他引:3  
提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。  相似文献   

20.
蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。  相似文献   

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