共查询到17条相似文献,搜索用时 78 毫秒
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4月15日,IT应用服务运营商中企动力在京正式推出一款酝酿已久的战略级产品──"数商Z"数字网络营销平台,此举标志着中企动力新的"信息化运营专家"战略定位的初步形成.作为一款中小企业电子商务企业级基础平台,"数商Z"具有开放式、模块化和可扩展等特点. 相似文献
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软件和信息服务:本土企业发展中有一些共性的困难,尤其在团队管理方面和资金链方面。也有很多人说中国的民营企业寿命平均只有15年左右。您是如何看待这些的?怎么带领中启动力跨越这些困难,避开这些怪圈? 相似文献
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A Comparison of Prediction Accuracy,Complexity, and Training Time of Thirty-Three Old and New Classification Algorithms 总被引:26,自引:0,他引:26
Twenty-two decision tree, nine statistical, and two neural network algorithms are compared on thirty-two datasets in terms of classification accuracy, training time, and (in the case of trees) number of leaves. Classification accuracy is measured by mean error rate and mean rank of error rate. Both criteria place a statistical, spline-based, algorithm called POLYCLSSS at the top, although it is not statistically significantly different from twenty other algorithms. Another statistical algorithm, logistic regression, is second with respect to the two accuracy criteria. The most accurate decision tree algorithm is QUEST with linear splits, which ranks fourth and fifth, respectively. Although spline-based statistical algorithms tend to have good accuracy, they also require relatively long training times. POLYCLASS, for example, is third last in terms of median training time. It often requires hours of training compared to seconds for other algorithms. The QUEST and logistic regression algorithms are substantially faster. Among decision tree algorithms with univariate splits, C4.5, IND-CART, and QUEST have the best combinations of error rate and speed. But C4.5 tends to produce trees with twice as many leaves as those from IND-CART and QUEST. 相似文献
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《Computer Graphics and Applications, IEEE》2007,27(2):6-6
Outgoing Editor-in-Chief John Dill and incoming Editor-in-Chief Maureen Stone discuss the magazine's successes and its future. 相似文献
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嵌入式系统作为一种新兴的监控系统,目前已经在各个领域引起了高度关注。本文介绍了Windows CE.NET实时操作系统的特点及优势,重点阐述了基于Windows CE.NET平台的某旧船动力装置监控系统的软硬件系统具体开发设计过程。 相似文献
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讨论了将操作系统移植到新的主机板上时,该如何使用调试工具的问题。除介绍了传统调试方式之外,还介绍了较先进的调试方式;并以主机板采用Windows CE时应该以何种方式进行调试作为所讨论的重点。 相似文献
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杨妍 《数码设计:surface》2014,(1):49-50
老建筑承载着厚重的历史,当他们不再适用于现代的生活,将它们拆毁并不是唯一有效的途径。当代建筑着力寻求可持续发展,对老建筑进行改造与再生,既能保存其历史价值,又是符合这个时代经济利益与发展需求的潮流趋势。 相似文献
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嵌入式操作系统Windows CE的研究 总被引:12,自引:5,他引:12
WindowsCE是适合嵌入式应用的操作系统,介绍了WindowsCE嵌入式系统的系统结构,讨论了如何在WindowsCE下如何构建嵌入式应用平台,最后,给出了WindowsCE下网络通信协议的开发过程。 相似文献
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因特网的发展把人类带入了一个全新的媒体时代。今天网络已经深入到我们生活的每一个地方,网络动画、网络视频、虚拟网店等多媒体信息大量搬上网络。作为网络信息传播的载体——网页的设计也提出了更高的要求,而多媒体网页已经成为新媒体时代网页设计的发展趋势。 相似文献
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Elizabeth D. Mynatt Vicki L. O'Day Annette Adler Mizuko Ito 《Computer Supported Cooperative Work (CSCW)》1998,7(1-2):123-156
Collaboration has long been of considerable interest to both designers and researchers in the CHI and CSCW communities. This paper contributes to this discussion by proposing the concept of network communities as a new genre of collaboration for this discussion. Network communities are robust and persistent communities based on a sense of locality that spans both the virtual and physical worlds of their users. They are a technosocial construct that requires understanding of both the technology and the sociality embodying them. We consider several familiar systems as well as historical antecedents to describe the affordances these systems offer their community of users. Based on our own experience as designers, users and researchers of a variety of network communities, we extend this initial design space along three dimensions: the boundary negotiations between real and virtual worlds, support for social rhythms and the emergence and development of community. Finally we offer implications for designers, researchers and community members based on our findings. 相似文献
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《Computer Fraud & Security》2000,2000(2):18-19
Someone once said that the more things change, the more they stay the same. Well, that certainly applies to our current environment. When it comes to technology, yes, there are changes, some dramatic changes in fact. When it comes to we human beings, not much has changed over the years when it comes to our basic instincts, what we want out of life, our inherent drive for personal freedoms, and the like. However, when we combine our human instincts and desires with technology, we find that we keep doing the same old things but in a technology-based environment. And when it comes to stealing, sensitive information, proprietary information, trade secrets, government secrets and the like, this certainly holds true. 相似文献