两种减少噪声对双支持向量机影响的方法

双支持向量机是Jayadeva等人在2007年提出的一种新的支持向量机.在处理模式分类问题时,双支持向量机的训练速度远远超过传统的支持向量机,计算效率大约是传统支持向量机的四倍.但双支持向量机没有考虑到不同样本点对最优超平面所产生的影响,而是同等对待所有的训练数据样本来构造最优超平面,从而无法降低噪声对分类面的影响.为了克服这个缺点,总结提出了两种方法,一是将模糊技术应用于双支持向量机中,对不同的样本采用不同的惩罚权系数,找到适合的隶属度函数来提高双支持向量机的分类准确率;二是将超球体技术与双支持向量机相结合,清除数据样本中的噪声,减小系统结构误差.实验证明这两种方法能有效的减少噪声的影响.     

径流长期预报的支持向量机方法

支持向量机是近年来提出的一种新的机器学习算法,在解决小样本、非线性及高维模式识别问题中具有独特的优势。针对径流形成过程的不确定性和复杂性,提出了基于支持向量机分类模型的径流长期预报方法。相关研究表明,该方法是可行的,具有预测精度高和良好的可靠性等优点。     

径流长期预报的支持向量机方法

支持向量机是近年来提出的一种新的机器学习算法,在解决小样本、非线性及高维模式识别问题中具有独特的优势.针对径流形成过程的不确定性和复杂性,提出了基于支持向量机分类模型的径流长期预报方法.相关研究表明,该方法是可行的,具有预测精度高和良好的可靠性等优点.     

基于支持向量机的泵功图工况识别

支持向量机是基于小样本统计学习理论的分类算法,推广能力强。本文将支持向量机算法应用于泵功图模式识别,首先提取泵功图特征,再使用LibSVM工具箱对特征样本进行训练,建立分类器,并测试其分类能力,实验表明此方法可以应用于泵功图的模式识别。     

基于支持向量机的交通信息融合算法研究

支持向量机(SVM)是一种崭新的机器学习方法,它建立在结构风险最小化原理的基础上,具有很高的泛化性能。此方法能解决小样本、非线性及高维模式识别中的问题。本文以高速公路上的交通流参数为研究对象,提出了一种基于支持向量机的信息融合算法,并利用事件和非事件条件下的模拟数据对支持向量机进行了训练和测试。同时将该算法与多层前向神经网络(MLF)算法进行了性能比较,仿真实验结果表明该算法具有更好的分类效果,更高的检测率和更低的误报率,可以明显改善检测效果。     

基于最小二乘支持向量机的短期负荷预测

支持向量机是一种基于统计学理论的新颖的机器学习方法,该方法被广泛用于解决分类和回归问题。文章将最小二乘支持向量机(LS-SVM)算法应用于电力系统短期负荷预测中,并将其预测结果和BP神经网络的预测结果进行比较分析。仿真实验表明,该方法在短期负荷预测中具有很好的预测速度和精度。     

基于最小二乘支持向量机的短期负荷预测

支持向量机是一种基于统计学理论的新颖的机器学习方法,该方法被广泛用于解决分类和回归问题。文章将最小二乘支持向量机（LS—SVM）算法应用于电力系统短期负荷预测中,并将其预测结果和BP神经网络的预测结果进行比较分析。仿真实验表明,该方法在短期负荷预测中具有很好的预测速度和精度。     

基于Logistic—SVM的上市公司总经理离职行为预警模型研究

文章在建立上市公司总经理离职行为预警指标体系基础上,提出了Logistic和支持向量机（SVM）相结合的上市公司总经理离职行为预警模型。对原始指标数据进行标准化处理,然后通过Logistic回归分析对SVM的输出提供支持信念以修正支持向量机的结果。     

基于支持向量机的柴油机故障诊断

本文研究了基于支持向量机的故障诊断方法。以传感器检测数据为输入,利用v-支持向量分类机进行故障分类识别。通过对柴油机燃油压力波动信息和柴油机振动监测数据的处理分析,结果显示基于支持向量机的故障分类器能够在样本有限的情况下出色的完成多种故障的诊断分类。     

支持向量机技术及其应用研究

支持向量机(SVM)是建立在统计学习理论基础上的一种小样本机器学习方法,本文主要介绍了支持向量机的基本原理,多类分类的研究现状。最后介绍了支持向量机的典型应用。     

Development in Information and Communications Technology (ICT) Statistics at the Australian Bureau of Statistics

This paper outlines the ICT statistical developments that the ABS has undertaken over recent years. These developments have been on both the supply side (ICT industry) and the demand side (use of IT by sector). The content of ABS ICT surveys has changed significantly over the last few years and are expected to develop further in line with industry changes and emerging policy needs.
Recent developments in household collections have been the inclusion of IT use questions in the 2001 Census of Population and Housing and in various ABS social surveys such as Children's Participation in Culture and Leisure Activities. Annual business IT use surveys are now conducted and include topics such as Internet commerce and IT security. Biennial ICT industry surveys are conducted to provide data on ICT production, imports and exports, ICT industry employment, performance and structure information. An Internet activity survey is run every six months and provides regional Internet access details and infrastructure details on Internet service providers.
A major development for 2002–03 will be the compilation of an ICT satellite account. ABS intends to produce an ICT Information Development Plan to guide its future statistical development work in the ICT field.     

Value at Risk in the Suburbs: Eminent Domain and the Geographical Politics of the US Foreclosure Crisis

Several US counties and local governments have recently considered a novel solution to the foreclosure crisis. They plan to use eminent domain to compel the owners of mortgage debt—and specifically of private‐label mortgage‐backed securities—to sell the debt to the government at a price reflecting the loan's market value. The government would then restructure the debt and resell it to new investors. The plans are striking because—in contrast to both development‐driven eminent domain and the federal subprime bank bailout—they would force investors to assume asset devaluation and increased long‐term risk. Notably, the plans have emerged as an instance of financialization‐focused politics in suburbs and suburban cities of color, specifically majority‐black and ‐Latino/a suburbs. Local support for the plans, we argue, is rooted in the long‐term disinvestment of these ‘suburbs of exception', which became targets of subprime lending and eventually sites where the ‘financial exception' has been localized. But these demographic shifts, fragmentation and fiscal pressures have at the same time created a suburban political terrain in which the plans have gained their strongest political support.     

Towards a Theory of Serendipity: A Systematic Review and Conceptualization

Serendipity – the notion of making surprising and valuable discoveries – plays a major role in the success of individuals and organizations alike. Previous research has established the importance of serendipity and identified important individual- and organizational-level antecedents. However, the literature has been dispersed and the boundaries of the concept have been blurry, leading to a lack of conceptual clarity and structure, and thus limiting validity and managerial actionability. Based on a systematic literature review, I synthesize existing management-related research on serendipity and explicate the emergence and composition of serendipity in the organizational context. I first identify three necessary conditions that differentiate serendipity from related concepts such as luck or targeted innovation: agency, surprise, and value. Then, I draw from the literature on sensemaking, event-based theorizing, and quantum-based approaches to management to conceptualize the process of cultivating serendipity in the organizational context as a process of enabling potentiality and materialization, and develop a multi-level theory of (cultivating) serendipity. This conceptualization contributes to our collective understanding of how, why, and when (i.e., under what conditions) organizations can leverage the value in the unexpected, which opens up fruitful avenues for further research.     

Accountability of NGOs in Bangladesh A critical overview

NGOs in Bangladesh have been recognized as effective change agents in the socio-economic arena throughout the world. Their contributions in micro credit, non-formal education and primary health care are widely known. NGOs play a significant role in society. NGO accountability, as a result, has become a critical issue. NGO accountability in Bangladesh has been examined here in relation to patrons, clients and themselves. Of the three relationships only accountability to patrons is in a near satisfactory state. Accountability to clients is handicapped by lack of opportunities of beneficiaries to participate meaningfully in NGO policy making. Accountability to themselves is adversely affected due to the adherence to a strictly hierarchical system and the influence of founding and charismatic NGO leaders.     

Towards an Asian model of human resource management? A comparative analysis of China,Japan and South Korea

There has been much discussion regarding the possible decline and weakening of national systems of human resource management (HRM). Yet, culture and institutions are often cited as the major stumbling blocks to this outcome. Such constraints may dissipate in the analysis, particularly if ‘regional clusters’ are considered where geographic and cultural closeness and ‘openness’ to similar economic pressures exist. In such cases, it might be postulated that convergence in HRM will occur. We argue that China, Japan and South Korea represent such a cluster. This article examines these countries, to see if a degree of convergence is taking place and if it is towards an identifiable ‘Asian’ model of HRM. A model of change is presented that distinguishes between levels of occurrence and acceptance. Details of the development and practice of HRM in each country are then set out. The article ends with a discussion and implications section and a brief conclusion.     

The Creation of the Office for National Statistics

A new Office for National Statistics was created in the United Kingdom in 1996 following a series of developments designed to strengthen the relevance and integrity of statistics. This paper describes these fundamental changes and sets out a blueprint for future progress. It also sets current developments in the United Kingdom in an historical and international context.     

What helps? Women engineers' accounts of staying on

We have considerable understanding of the obstacles that women engineers encounter and the reasons that they leave the field, but we know less about what enables them to remain. Adopting an interpretivist approach, this article examines how a group of British women engineers in two FTSE 100 companies account for “staying on” in their male‐dominated work settings. We delineate four specific forms of help that facilitate women's retention in the field. We argue that exposure to help leads to women developing a habitus that enables them to continue working in engineering. To conclude, we draw on our findings to outline HR practices that will facilitate supportive relationships in the workplace and pave the way towards developing more positive organisational climates.     

论现代物流企业的发展观

物流业经过诸多年的发展目前已经成为最热门的行业之一,物流企业的注册数量也与日俱增,达到前所未有的规模。毋庸置疑,任何企业都希望自己迅速做强做大,并成为真正现代物流企业的典型代表,要实现这一目标一个首要问题就是要解决现代物流企业的发展观问题。     

浅谈大体积混凝土裂缝的控制

大体积混凝土的裂缝问题是实际工程中长期困扰工程技术人员的问题,其控制技术的研究是混凝土结构研究的热点问题,具有重大的学术价值和潜伏的工程背景。     

Export Composition and Manufacturing Employment in the US during the Economic Downturn of 1991-92

This paper examines the effect that export composition had upon manufacturing employment in the US during the 1991 recession. Although it takes, on average, approximately $66 000 in exports to create one job, the exact gains in terms of total employment depend upon the labour-intensity of the products being exported. Foreign sales by the chemical and textile industries result in a far greater increase in employment than exports by the petroleum refining or steel industries. This analysis estimates the employment effects of manufacturing exports over the 1989-95 period, utilizing an input-output model to capture both direct and indirect effects. The results demonstrate that export composition has, at times, both strengthened and reduced demand for labour. Consequently, if job-creation is a national goal, it may be in the interests of the US to promote exports from sectors that are labour-using.