检索结果-内蒙古大学图书馆

A hybrid neural model in long-term electrical load forecasting

16th International Conference on Artificial Neural networks, ICANN 2006

作者： Carpinteiro, Otaávio A. S. Lima, Isaiáas Leme, Rafael C. De Zambroni Souza, Antonio C. Moreira, Edmilson M. Pinheiro, Carlos A. M. Research Group on Computer Networks and Software Engineering Federal University of Itajubaá 37500-903 Itajubaá MG Brazil

ISBN: (纸本)3540388710

A novel hierarchical hybrid neural model to the problem of long-term electrical load forecasting is proposed in this paper. The neural model is made up of two self-organizing map nets - one on top of the other -, and a single-layer perceptron. It has application into domains which require time series analysis. The model is compared to a multilayer perceptron. Both the hierarchical and the multilayer perceptron models are endowed with time windows in their input layers. They are trained and assessed on load data extracted from a North-American electric utility. The models are required to predict once every week the electric peak-load and mean-load during the next two years. The results are presented and evaluated in the paper. © Springer-Verlag Berlin Heidelberg 2006.

关键词： Electric load forecasting

来源：评论

学校读者我要写书评

暂无评论

Measuring the usability of online stores

Measuring the usability of online stores

引用

18th International Conference on software engineering and Knowledge engineering, SEKE 2006

作者： Cachia, Ernest Micallef, Mark Software Engineering Process Improvement Research Group Department of Computer Science and Artificial Intelligence University of Malta Malta

ISBN: (纸本)9781627486606

As online shopping turnover continues to increase year after year [1], more and more business are rushing to establish an online presence In a previous publication [2], the authors of this paper identified usability as being one of the attributes which most influence the success of an e-commerce systems This paper explores the issues involved in measuring the usability of e-commerce systems and presents a usability measurement framework specifically tailored to online stores The framework provides a quick way to evaluate the usability of online stores through easily automatable mathematical analysis of a site's structure and visual layout, followed by a short checklist to assure that essential usability criteria have been met References are made to a number of research exercises carried out by the authors amongst online shoppers and case studies of well-known e-commerce sites are also presented.

关键词： Electronic commerce

来源：评论

学校读者我要写书评

暂无评论

Distributed anomaly detection in wireless sensor networks

Distributed anomaly detection in wireless sensor networks

引用

10th IEEE Singapore International Conference on Communications Systems, ICCS 2006

作者： Rajasegarar, Sutharshan Leckie, Christopher Palaniswami, Marimuthu Bezdek, James C. ARC Special Research Center for Ultra-Broadband Information Networks Department of Electrical and Electronic Engineering University of Melbourne Australia ARC Special Research Center for Ultra-Broadband Information Networks Department of Computer Science and Software Engineering University of Melbourne Australia Computer Science Department University of West Florida United States

ISBN: (纸本)1424404118

Identifying misbehaviors is an important challenge for monitoring, fault diagnosis and intrusion detection in wireless sensor networks. A key problem is how to minimise the communication overhead and energy consumption in the network when identifying misbehaviors. Our approach to this problem is based on a distributed, cluster-based anomaly detection algorithm. We minimise the communication overhead by clustering the sensor measurements and merging clusters before sending a description of the clusters to the other nodes. In order to evaluate our distributed scheme, we implemented our algorithm in a simulation based on the sensor data gathered from the Great Duck Island project. We demonstrate that our scheme achieves comparable accuracy compared to a centralised scheme with a significant reduction in communication overhead. © 2006 IEEE.

关键词： Wireless sensor networks

来源：评论

学校读者我要写书评

暂无评论

Does optical burst switching have a role in the core network?

Does optical burst switching have a role in the core network...

引用

Optical Fiber Communication Conference, OFC 2006

作者： Parthiban, R. Tucker, Rodney S. Leckie, C. Zalesky, A. Tran, A.V. ARC Special Research Centre for Ultra-Broadband Information Networks Australia Department of Electrical and Electronic Engineering University of Melbourne Australia Department of Computer Science and Software Engineering University of Melbourne Australia

We show that Optical Burst Switching (OBS) does not appear to be a viable option for routing in the core network. In order to achieve an acceptably low blocking probability, OBS networks will require an uneconomically... 详细信息

ISBN: (纸本)1557528020

关键词： Optical burst switching

来源：评论

学校读者我要写书评

暂无评论

TF-ICF: A new term weighting scheme for clustering dynamic data streams

TF-ICF: A new term weighting scheme for clustering dynamic d...

引用

5th International Conference on Machine Learning and Applications, ICMLA 2006

作者： Reed, Joel W. Yu, Jiao Potok, Thomas E. Klump, Brian A. Elmore, Mark T. Hurson, Ali R. Applied Software Engineering Research Group Computational Sciences and Engineering Division Oak Ridge National Laboratory Oak Ridge TN 37831 Computer Science and Engineering Department Pennsylvania State University University Park PA 16801

ISBN: (纸本)0769527353

In this paper, we propose a new term weighting scheme called Term Frequency - Inverse Corpus Frequency (TF-ICF). It does not require term frequency information from other documents within the document collection and thus, it enables us to generate the document vectors of N streaming documents in linear time. In the context of a machine learning application, unsupervised document clustering, we evaluated the effectiveness of the proposed approach in comparison to five widely used term weighting schemes through extensive experimentation. Our results show that TF-ICF can produce document clusters that are of comparable quality as those generated by the widely recognized term weighting schemes and it is significantly faster than those methods. © 2006 IEEE.

关键词： Data structures

来源：评论

学校读者我要写书评

暂无评论

Early detection of JML specification errors using ESC/Java2

Early detection of JML specification errors using ESC/Java2

引用

2006 Conference on Specification and Verification of Component-Based Systems, SAVCBS 2006

作者： Chalin, Patrice Dept. of Computer Science and Software Engineering Dependable Software Research Group Concordia University 1455 de Maisonneuve Blvd. West Montréal Qué. H3G 1M8 Canada

ISBN: (纸本)159593586X

The earlier errors are found, the less costly they are to fix. This also holds true of errors in specifications. While research into Static Program Verification (SPV) in general, and Extended Static Checking (ESC) in particular, has made great strides in recent years, there is little support for detecting errors in specifications beyond ordinary type checking. This paper reports on recent enhancements that we have made to ESC/Java2, enabling it to report errors in JML specifications due to (method or Java operator) precondition violations and this, at a level of diagnostics that is on par with its ability to report such errors in program code. The enhancements also now make it possible for ESC/Java2 to report errors in specifications for which no corresponding source is available. Applying this new feature to, e.g., the JML specifications of classes in java.*, reveals over 50 errors, including inconsistencies. We describe the adjustment to the assertion semantics necessary to make this possible, and we provide an account of the (rather small) design changes needed to realize the enhancements. Copyright 2006 ACM.

关键词： Specification languages

来源：评论

学校读者我要写书评

暂无评论

Medium access control protocols for ad hoc wireless networks: A survey

引用

Ad Hoc networks 2006年第3期4卷 326-358页

作者： Kumar, Sunil Raghavan, Vineet S. Deng, Jing Department of Electrical and Computer Engineering Clarkson University Potsdam NY 13699 United States Digital Television Group ATI Technologies Inc. Marlborough MA 01752 United States Department of Computer Science University of New Orleans New Orleans LA 70148 United States Electrical and Computer Engineering Department Clarkson University Potsdam NY United States IEEE Embedded Software for Digital Televisions Group ATI Research Inc. Marlborough MA United States Department of Computer Science University of New Orleans LA United States

Studies of ad hoc wireless networks are a relatively new field gaining more popularity for various new applications. In these networks, the Medium Access Control (MAC) protocols are responsible for coordinating the access from active nodes. These protocols are of significant importance since the wireless communication channel is inherently prone to errors and unique problems such as the hidden-terminal problem, the exposed-terminal problem, and signal fading effects. Although a lot of research has been conducted on MAC protocols, the various issues involved have mostly been presented in isolation of each other. We therefore make an attempt to present a comprehensive survey of major schemes, integrating various related issues and challenges with a view to providing a big-picture outlook to this vast area. We present a classification of MAC protocols and their brief description, based on their operating principles and underlying features. In conclusion, we present a brief summary of key ideas and a general direction for future work. © 2004 Elsevier B.V. All rights reserved.

关键词： Network protocols

来源：评论

学校读者我要写书评

暂无评论

Privacy-Aware Modelling and Distribution of Context Information in Pervasive Service Provision

Privacy-Aware Modelling and Distribution of Context Informat...

引用

IEEE/ACS International Conference on Pervasive Services (ICPS)

作者： Roussaki Strimpakou Pils Kalatzis Neubauer Hauser Anagnostou School of Electrical and Computer Engineering National and Technical University of Athens Greece Telecommunications Software & Systems Group Waterford Institute of Technology Ireland Institute of Communication Networks and Computer Engineering (IKR) University of Stuttgart Germany

Context awareness is an essential cornerstone in future pervasive computing systems. It has the potential to greatly reduce the user attention and interaction bottlenecks, to give humans the impression that services fade into the background, and to support intelligent personalization features. Nevertheless, in order to create such an environment, a growing amount of personal information has to be provided to the system, either manually or automatically. Hence the digital trace and representation users have in the system is getting dangerously detailed, thus stressing the need for privacy protection. DAIDALOS (Satyanarayanan, 2001) is a European research project in the area of 3G and beyond, which aims to combine heterogeneous networks in a transparent and seamless way, and develop on top of this a pervasive environment for applications and end-users. This paper describes the main models and mechanisms that have been established to provide federated context-aware services and protect the privacy of their users

关键词： Context modeling Context-aware services Pervasive computing Telecommunication computing Context awareness Privacy computer networks Protection Communication system software software systems

来源：评论

学校读者我要写书评

暂无评论

Both robust computation and mutation operation in dynamic evolutionary algorithm are based on orthogonal design 06

Both robust computation and mutation operation in dynamic ev...

引用

8th Annual Genetic and Evolutionary Computation Conference 2006

作者： Zeng, Sanyou Wang, Rui Hui, Shi. Chen, Guang De Garis, Hugo Kang, Lishan Ding, Lixin School of Computer Science Research Center for Space Science and Technology China University of GeoSciences 430074 Wuhan Hubei China Brain Builder Group Computer Science Dept. Utah State University Logan UT 84341 United States StateKey Laboratory of Software Engineering Wuhan University 430072Wuhan Hubei China

ISBN: (纸本)1595931864

A robust dynamic evolutionary algorithm (labeled RODEA), where both the robust calculation and mutation operator are based on an orthogonal design, is proposed in this paper. Previous techniques calculate the mean effective objective (for robust) by using samples without much evenly distributing over the neighborhood. The samples by using orthogonal array distribute evenly. Therefore the calculation of mean effective objective more robust. The new technique is generalized from the ODEA algorithm [1]. An orthogonal design method is employed on the niches for the mutation operator to find a potentially good solution that may become the representative in the niche. The fitness of the offspring is therefore likely to be higher than that of its parent. We propose a complex benchmark, consisting of moving function peaks, to test our new approach. Numerical experiments show that the moving solutions of the algorithm are a little worse in objective value but robust.

关键词： Mathematical operators

来源：评论

学校读者我要写书评

暂无评论

Distributed Anomaly Detection in Wireless Sensor networks

Distributed Anomaly Detection in Wireless Sensor Networks

引用

International Conference on Communication Systems

作者： Sutharshan Rajasegarar Christopher Leckie Marimuthu Palaniswami James C. Bezdek ARC Special Research Center for Ultra-Broadband Information Networks Department of Electrical and Electronic Engineering University of Melbourne Australia ARC Special Research Center for Ultra-Broadband Information Networks Department of Computer Science and Software Engineering University of Melbourne Australia Computer Science Department University of West Florida USA

Identifying misbehaviors is an important challenge for monitoring, fault diagnosis and intrusion detection in wireless sensor networks. A key problem is how to minimize the communication overhead and energy consumption in the network when identifying misbehaviors. Our approach to this problem is based on a distributed, cluster-based anomaly detection algorithm. We minimize the communication overhead by clustering the sensor measurements and merging clusters before sending a description of the clusters to the other nodes. In order to evaluate our distributed scheme, we implemented our algorithm in a simulation based on the sensor data gathered from the Great Duck Island project. We demonstrate that our scheme achieves comparable accuracy compared to a centralized scheme with a significant reduction in communication overhead

关键词： Wireless sensor networks Sensor phenomena and characterization Energy consumption computer science Fault diagnosis Intrusion detection Detection algorithms Clustering algorithms Intelligent networks software engineering

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：