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最小绝对值
相关语句
  the least absolute value
     The Distinguishing of Linear Model of the Least Absolute Value Method
     线性模型辨识的最小绝对值
短句来源
     The Least Absolute Value Linear Fitting of D-u Line
     D-u关系的最小绝对值线性拟合法
短句来源
     The Study of Estimation of Weight Coefficient in Combination Forecast Models——The Application of the Least Absolute Value Model
     组合预测中权重的确定研究——最小绝对值法的应用
短句来源
     On the basis of traditional combination forecast models,we introduce one new intergraded prediction method called the least absolute value which takes the minimum sum of absolute value as the target function.
     在讨论传统的组合预测方法的基础上,提出了新的组合预测方法,即以绝对值之和最小为目标函数的最小绝对值法.
短句来源
  “最小绝对值”译为未确定词的双语例句
     The realization of minimum mean absolute error estimator in parameter estimation
     参数估计中最小绝对值误差估计器的实现
短句来源
     On the basis of optimization methods, theory of wavelet and wave impedance inversion is set up.
     首先,本文建立了子波反演和波阻抗反演的理论,提出了最小绝对值准则优化问题的迭代加权共轭梯度算法。
短句来源
     The main principle of Bayes parameter estimation is briefly introduced in this paper. Based on choosing absolute error function as the cost function,the realization methods of minimum mean absolute error(MMAE) are derived.
     简要介绍了贝叶斯参数估计的基本原理,并在选择绝对型损失函数的基础上,给出了最小绝对值误差估计器(minimum mean absolute error,简称MMAE)的实现方法.
短句来源
     This paper presents a new algorithm for power system state estimation based on weight function with the advantages of both WLS and WLAV. A little modification of WLS software is needed to achieve the new algorithm.
     提出基于权函数的电力系统状态估计算法,该方法较好地综合了加权最小二乘法(WLS)和加权最小绝对值(WLAV)两种估计方法的优点,仅需对应用广泛的WLS软件作很少的修改即可实现该算法。
短句来源
     First Weighted Least Square (WLS) Estimation is used to detect fault, then Weighted Least Absolute Value (WLAV) Estimation is used to locate Fault where there is a fault.
     它们表现为一种状态估计问题,首先用加权最小平方(WLS)估计法来检测故障,再用加权最小绝对值(WLAV)估计法来定位故障。
短句来源
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  相似匹配句对
     The Least Absolute Value Linear Fitting of D-u Line
     D-u关系的绝对值线性拟合法
短句来源
     The effects of N,P,K on flower quality are different;
     P肥.
短句来源
     The Distinguishing of Linear Model of the Least Absolute Value Method
     线性模型辨识的绝对值
短句来源
     TRANSFER FUNCTION PARAMETER ESTIMATION USING LEAST-ABSOLUTE VALUE TECHNIQUE
     识别传递函数参数的绝对值
短句来源
     A Class of the Minimum Problems with Absolute Value
     一类带绝对值值问题
短句来源
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  the least absolute value
This paper demonstrates that utilizing the least squares residuals to provide an advanced start for the least absolute value and Chebychev procedures results in a significant reduction in computational effort.
      
These visual display techniques (stem- and- leaf, box- and- whisker, and two-way plots) are presented for both the least squares and the least absolute value analyses of a two-way classification model.
      
Finally we obtain only one difference that will hold the least absolute value, almost equal to zero in case of a valid succession of images.
      


Five expression plasmids for a total chemically synthesized gene of human tumor necrosis factor-α (TNF-α) were constructed. There are two different points;. 1. the distance (D) between the SD and the initiation codon ATG; 2. the energy- AG°?f298for forming the stable secondary structure in the translation initiation region. The plasmid with a (D) of 6bp has the lowest AG°f298 (absolute value) and showed the highest expression level, up to 60% of the total bacterial proteins.

用人工合成的α-肿瘤坏死因子(TNF-α)基因构建了五个不同的表达质粒,它们不同之处是SD序列与起始密码子ATG间距离(D)各异。计算机模拟计算出翻译起始区域(TIR)中二级结构的最小生成自由能,以(D)为6个核苷酸时最小(绝对值)。它的表达效率也最高,产物TNF-α可达菌体总蛋白的60%。密码子的选用对表达效率有很大的影响,故人工合成TNF-α基因(选用大肠杆菌偏爱的密码子)的表达效率高于sc-DNA(对部分密码子改造的半合成cDNA)。

Based on the least square criterion, the least souares method is a commonly used method for inverse problems. At first, we discussed the essence of its success in sloving inverse problems. Then, we considered the method as not always successful one and give some general results of choosing residuals′ normal, and proposed two criteria to measure the performance of residuals′ normal. Finally, the numerical calculation proves the theory results powerly. All conclusions are clear and significant for sloving inverse...

Based on the least square criterion, the least souares method is a commonly used method for inverse problems. At first, we discussed the essence of its success in sloving inverse problems. Then, we considered the method as not always successful one and give some general results of choosing residuals′ normal, and proposed two criteria to measure the performance of residuals′ normal. Finally, the numerical calculation proves the theory results powerly. All conclusions are clear and significant for sloving inverse problems.

指出了(阻尼)最小二乘法能够成功解决反问题的本质,然而它并不总是最优准则。如果误差服从拉普拉斯分布,那么最小绝对值准则最优,如果误差近似均匀分布,则应选极小极大准则。首次提出的两个准则可一般地评价或选择最优模,最优模使后验概率取极大值或使某种差值取极小值,最后的数值例子说明了这些结论

This paper presents a new algorithm to estimate parameters of transfer functions.The algorithm developed is based on the least absolute value approximation of l1-norm. By using this technique, there is no need of iteration operation to obtain the estimation. In an example, the results obtained using the proposed algorithm with those obtained using the least-square error algorithm are compared.

利用线性振动系统的传递函数可正确识别出振动系统的模态参数。用最小二乘法通过实测频响特性的数据求传递函数时,当频响特性的量测误差呈非高斯分布,则识别出的参数是有偏的。为此,本文用最小绝对值误差方法导出识别传递函数参数的新方法,并通过算例来验证它的有效性。

 
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