查询词典 two-way classification

The traditional algorithms of classification are no longer suitable because of the effect of the concept drift in data streaming. The research on fast and stable data mining systems with high accuracy has become more valuable in both theory and practice. The effect of low frequency concepts on time and space performance is studied and an LFCR algorithm is proposed in this paper, which reduces the low frequency concept with some mechanisms. The extensive experimental study shows that LFCR has improved performance in classification in comparison with RePro.

由于数据流中概念漂移现象的影响，使得传统的分类方法不再适用，因此研究快速、精确及稳定的数据流挖掘方法和系统具有较高的理论和应用价值；文章研究了基于频度的概念漂移中低频概念对分类时空性能的影响，提出了对其中的低频概念进行消减的算法，实验表明LFCR算法比RePro算法有更好的分类性能。

In view of it is the standard limiting value rather than the normal value in the ground waterquality classification standard, and the stipulation causing inconvenient and chaotic inapplication, this paper putout the ground water quality classification normal value.

针对&地下水质量标准&中规定的是&地下水分类指标标准限值&而常用地下水质量综合评价模型中使用的是&标准值&造成的使用不便和混乱，给出了&地下水质量分类标准值&

Time-Frequency analysis method is applied to the analysis of PEC signals with the aim of discriminating the occurrence of corrosion from the simultaneous variations of lift-off, smoothed pseudo Wigner-Ville distribution is used to get the signal spectrum map. The method of extracting the lowest energy area as the classification eigenvalue is proposed, and a good classification result is acquired.

采用时频分析的方法对同时出现腐蚀缺陷和提离变化的情况进行了识别，利用平滑的伪Wigner-Ville分布得到了信号的谱图，提出了提取谱图中最低能量区域面积作为特征量进行识别的方法，取得了较好的识别效果。

The upland yellow-red soil as case, the automatic classification techniques for soil type and soil organic matter map at county scale (1:50,000) were developed based on knowledge classification rules and expert classified simulator; The relationship between physico-chemical properties of coastal saline soils and their hyperspectral reflectance were studied; The multi-temporal RS data were used to detect the land use in coastal soil region; The spatial variability and sampling strategy for coastal saline soils were researched.

以滨海盐碱土为对象，在国内系统的开展了盐碱土理化特性和地面土壤高光谱之间的关系研究，并利用不同时相遥感资料进行盐碱土地区农业土地利用制图，研究了盐碱土不同剖面土壤空间变异特性和高效采样策略。

With the help of related economic theories, thethesis is trying to classify the environmental and sanitary infrastructure construction projects into three kinds: non-commercial projects, quasi-commercial projects and commercial projects. On the basis of the classification, in the process of the reform of the investing and financing system its advisable to specify the function of the government, to set up the guidance of the project classification and investing system, and to adjust measures to cope with different projects aecoding to their varied conditions.

本文运用相关经济学理论将上海的环卫基础设施项目分为非经营性项目、准经营性项目和经营性项目，指出在环卫基础设施投融资体制改革过程中，明确政府职能定位，建立环卫设施项目分类指导和投资制度，因地制宜地针对不同性质的项目采取相应的具体措施。

Summarizes classification of railway transportation safety investment and the effect factors, expatiate the structure of safety costs, introducing analysis of safety costs and its implementations on railway corporates' investment decision making and safety management. Furthermore, it analyses classification, implementation, and measurement of economic benefits. It also provides fundamental knowledge in later analysis of derogation and efficiency improvement.

概述了铁路运输业安全投入的分类以及影响安全投入的因素；阐述了安全成本的构成、介绍安全成本分析法并将方法应用于铁路企业的安全投资决策与安全管理工作上；分析了安全投资效益的分类、特点、实现方式以及计量方法，为后面分析安全投资减损、增值效益提供分析方法的支撑。

On the basis of the theory, analyses and grade interval classification are conducted on the size deviation indices in the standard for water-reeled tussah silk. The precision assessment of the classification results between the new and old standards is expected to be helpful to the formulation of a State standard for water-reeled tussah silk.

对生丝抽样检验分级理论在柞蚕丝领域中的可行性进行了探讨，并根据这一理论对柞蚕水缫丝标准中纤度偏差指标进行了分析和等级区间划分；对新、旧标准的分级精度进行了评价；利用所得结果指导柞蚕水缫丝国家标准的制定工作。

Certificate issued by the carriers who issued the relative transport document or their agent,indicating the name of the carrying vessel,transport document's number and date and certifying that the carrying vessel is:aHolding a Valid Safety Management System Certificate as per terms of international safety management code and bclassified as per institute classification clause 01/01/2001 by an appropriate classification society.in case of transhipment this certificate should certify that the on-carrying vessel is also in compliance with a and b above.

被发行了比较的传送文件或他们的代理人的运送者发行的证书，指出运送的船名字，传送文件的数字和日期而且证明运送的船是：一依照国际的安全管理密码和 b 的术语握住一份有效的安全管理系统证书依照 transhipment 这一份证书的一个适当的分类 society.in 情形的学会分类子句 01/01/2001 分类应该证明在-之上运送的船在符合是也的作法中一和 b在上面。

In this paper, the author discusses the origin and the development of the aseismic design medel code,approaches the role and the characteristics of the model code, points out the necessity and the ways of drawing up and developing the model code in China, and puts forward a set of relatively complete classification of engineering structure operation function based on the performance design, and proposes the principles, framework and the methods of aseismic design classification.

文摘：论述了抗震设计样板规范的由来和发展，探讨了样板规范的作用和特点，提出了在我国编制和发展样板规范的必要性和途径，且提出了一套较完整的、基于性态设计的工程结构使用功能分类和抗震设计分类的原则、框架和方法。

The method is realized via the following steps: first to apply Isomap or LLE to get the embeddings of the original data set in the low dimensional space; then to obtain support vectors, which are the most significant and intrinsic data for the final classification result, by using support vector machine on these low dimensional embedding data; subsequently to get support vectors in the original high dimensional space based on the corresponding labels of the obtained low dimensional support vectors; finally to apply support vector machine again on these high dimensional support vectors to gain the final classification discriminant function.

数据挖掘是数据库知识发现中最重要的步骤之一，其目标是从获取的数据中高效准确地挖掘出我们所需要的信息。在实际应用中，数据往往呈现海量、高维、非线性等特性，这些特性给数据挖掘带来了很多问题，例如海量特性导致的计算效率低下问题、高维特性带来的维数灾难问题和非线性特性引起的线性模型失效问题等。幸运的是，实际中高维数据的属性之间往往存在一定的规律性和相关性，即实际数据经常存在着外在与内在两个维数。

Metrorrhagia is also gynaecological problems of common diseases.

崩漏是妇科常见病也是疑难症。

WordFTP gives you the convenience and timesaving you need.

wordftp让您的方便和省时您所需要的。