1)multiple transformation数乘变换
1.In order to improve the prediction accuracy,firstly GM(2,1) has been improved with the linear combination of the forward and backward difference scheme,where the parameter λ has been used to correct the background value;secondly the parameter ρ was used for a multiple transformation on the initial data,a new GM(2,1,λ,ρ) has been constructed in this paper.为了提高灰色GM(2,1)模型的预测精度,本文首先对灰色GM(2,1)模型的向前、向后差分进行线性组合出灰色GM(2,1,λ)模型,利用参数λ修正背景值;然后引入参数ρ对原始数列进行数乘变换,进一步将模型拓展为灰色GM(2,1,λ,ρ)模型。
2.Then the morbidity problem in the accumulating method GM(0,N) model by a multiple transformation on the initial data is resolved,a new healthier model is obtained and it is verified that the transformation doesn t affect the development parameter of the model and the precision of the system.利用数乘变换解决了该方法在参数估计中的严重病态性问题,证明数乘变换不改变模型的发展系数及精度。
3.Based on this conclusion we researched the affections multiple transformation caused to discrete grey model of multi-variables.在此基础上研究了数乘变换对其参数取值的影响,结果表明模型的模拟和预测值只与因变量的数乘变换有关,而与自变量的变换无关,模型的相对误差与所有变量的数乘变换都无关,这些结果对灰色模型系列性研究有重要意义。
英文短句/例句
1.Research on property of GM(n,h) model under data multiple transformationGM(n,h)模型建模序列数据数乘变换特性研究
2.The Identities Involving of 3 Lucas Numbers Product Sum;关于3个Lucas数乘积和的高次恒等变换
3.The number by which a logarithm in one system must be multiplied to obtain the corresponding logarithm in another system.对数的模当从一个系统变换到另一个系统时为得到相应的对数须乘以的一个数
4.Generalized Wavelets and Inversion of the Radon Transform on the Product Laguerre Hypergroup;乘积Laguerre超群上的广义小波变换及Radon逆变换
5.Spectral Reconstruction and Quantitative Analysis by B-Spline Transformations and Penalized Partial Least Squares Approach样条变换集成罚函数偏最小二乘方法用于光谱数据重构和定量分析
6.S: When there are three factors, we can multiply the last two factors first, then multiply the first factor, the results are the same.生：三个数相乘，可以先把后两个数相乘，再和第一数相乘，结果不变。
7.changing to a different vehicle,route, etc during a journey（旅途中的）中转,换乘,改变路线
8.RECURSIVE FAST ALGORITHM FOR LEAST SQUARES ESTIMATION WITH HOUSEHOLDER TRANSFORMATION最小二乘估计的HOUSEHOLDER变换快速递推算法
9.Berezin Transform and Hankel Products on the Weighted Bergman Space A_α~2加权Bergman空间上Berezin变换和Hankel算子乘积
10.Multiplicative Watermarking and Blind Detection Algorithm Based on Contourlet Transform基于Contourlet变换的乘性水印及盲检测算法
11.Multiplication of permutations, unlike multiplication of numbers, is not always commutative.置换的乘法不同于数的乘法，它并不一定满足交换律。
12.commutator type analog-digital converter换向器型模－数变换器
13.Analog dada has been employed to compare the smoothing effects of the Fourier transform smoothing and the Least square multinomial smoothing.用模拟数据对傅立叶变换平滑的效果与最小二乘多项式平滑效果作了比较。
14.One can reduce the amount in pounds to new pence by quite simply multiplying 100.把英镑数简单地乘以100就可以换成便士数。
15.Functions of Complex Variables & Integral Transformatio复变函数与积分变换
16.counting type ad converter计数方式模数变换器
17.count type analog to digital conversion计数型模拟数字变换
18.Homomorphic transform based BSS algorithm for multiplicative noise reduction乘性噪声消除的同态变换盲源分离算法
相关短句/例句
multiply transformation数乘变换
1.The variation of parameters before and after multiply transformation on original sequence is studied.研究了该估计方法下对原始序列进行数乘变换后参数的变化特征。
2.This paper studies the parameters and ill-conditioned problem of GM(2,1)model in oil water well control based on multiply transformation on original sequence.研究了原始序列的数乘变换对油水井控制中 GM( 2 ,1 )模型参数和病态性的影响问题 ,建立了数乘变换值分别与 GM( 2 ,1 )模型系数矩阵条件数、模型参数间的量化关系式 ,得到了 GM( 2 ,1 )优化模型完全适用于负数据序列建模、原始序列的初值化或均值化等处理不会影响系统的预测精度和误差、选择适当的数乘变换可降低模型的病态性等重要结
3.This paper proposes a new method to estimate the parameters of GM models,such as GM(1,1),GM(1,N), at the same time,the change of parameters before and after multiply transformation on original sequence are studied.本文提出了一种新的基于奇异值分解的 GM(1,1),GM(1,N)等灰色模型参数估计方法,并研究了该估计方法下对原始序列进行数乘变换后参数的变化特征。
3)MADC乘法数模变换器
4)multiplication transformation乘积变换
5)multiplier transformation乘子变换
1.This paper provides a method to construct kernel-function, and then obtains the representation in the form of singular integral and a particular kind of multiplier transformations in compact Lie group.提出了一种构造核函数的方法,并得到了紧Lie群上的一类特殊的乘子变换的积分表示。
6)multiplying digital to analog converters数字模拟相乘变换器
延伸阅读
相数变换 利用变压器将三相功率变换为六相、十二相或更多相数的功率。这种变换在直流输电换流站或其他工业企业中作为整流器的电源是非常有利的，它可使得到的直流电压波形较为平滑。常见的变换方法有以下两种。 ①将三相变为六相：三相变压器或三台单相变压器组的每一相都有 1个原绕组P和2个副绕组S┡和S″。一种接法是,将原绕组接成Y，而副绕组接成双Y，如图1所示。 按这种接法，如果将n┡与n″接成一点n，将a┡、c″、b┡、a″、c┡、b″作为6个端点,即是六相系统，每相电压各隔60°,即可直接画出Vd、Vb......Vf的电压相量图。在这种情况下,图1的原理结线相当于三相副绕组中间抽点。 另一种接法称为三相 Y与双△接法，即原绕组接成Y，而各相两个副绕组按极性分别接成双△。这样,可得到不同相位的电压V、V、V与V、V、V，而形成了六相系统。 ②将三相变为十二相。三相系统变为十二相系统时，三相变压器要有6个副绕组。将原绕组接成△，而各相6个副绕组按一定极性连接起来 (图2a)就可得以a、b、......e等为端子的十二相系统, 以N为参考点的电压相量相当于图2b所示。简化原理结线图中原绕组平行的各相6个绕组，就是某一相的副绕相,黑圆点代表同名端。 如果每相副绕组有3个,同理也可按双曲折接线法将三相变为六相。 通过增加变压器副绕组的数目，采用类似的办法还可以将三相系统变换成相数更多的多相系统，通常所得多相系统的相数都是3的偶数倍数。此外,利用三相变压器还可以采用所谓 T接法或斯科特接法将三相系统变换为两相系统。
