查询词典 estimation of parameter

Aiming at the variety of modals of nonlinear systems,we proposed a general parameter estimation method based on Genetic Algorithms,which can be used in most kinds of nonlinear system modal.

文摘：针对非线性系统模型的多样性，提出适用于多种非线性模型的基于遗传算法的参数估计方法，并以多种非线性模型为例作了仿真研究。

A new kind of algorithm, which is based on Dirac δ-Function, is established by Nonstandard Analysis for M/G/1 queueing system performance gradient estimation with respect to a kind of probability parameter.

新算法在实现过程中需要用样条函数来近似δ函数，但可以同时估计M/G/1排队系统中顾客期望系统时间和忙期期望长度对概率参数的梯度。

Genetic parameter estimation is one of the most important steps in treebreeding.

遗传参数估算是林木育种程序中最主要的环节之一。

The optimal amount of historical data for parameter estimation and for the determination of the order of error polynomial are studied by using real data.

结合实际数据研究了电价预测模型中参数辩识的最佳历史数据量及模型中残差多项式阶次的选择问题。

The experiment data of paramecium from Gause was used to investigate the efficiency of the method. And the twelve nonlinear real examples from "Agricultural Experimental Statistics" written by Mo Huidong were used to compare the difference between results fit by the Excel and the linear transformation method, respectively. The result showed that the Excel fitting method is not only simple and efficient for the parameter estimation but can fit various complex nonlinear equations also.

采用Gause的4组草履虫数据，研究了用Excel的"规划求解"工具进行非线性方程拟合的有效性，并以莫惠栋的《农业试验统计》一书中的12个非线性方程实例，比较了用Excel拟合与用常规线性转换方法拟合的差异，结果表明：用Excel进行非线性方程的拟合不仅简单易行、获得更优的参数估计，而且可以拟合各种复杂的非线性方程。

Simulation and experiment results show that the proposed algorithms can identify the parameters of IM exactly, and avoid the state estimation impacted by parameter variety.

仿真和实验研究表明，上述方法均能实现对电机参数的准确辨识，从而避免状态估计受电机参数变化的影响。

This paper is about to analyze the problem,establish the linear model of phase difference and provide a parameter estimation method to solve it.

本文作者通过分析相位差的产生，从理论上证明了相位差满足线性模型，并研究了如何通过参数估计来解决这一问题。

This paper presented a parameter estimation technique of polar tilt angle and azimuthal orientation angle of BAM images according to the variations of analyzer angles.

利用检偏角的变化，对布儒斯特显微镜图像像素点所代表分子簇的极化倾角和取向方位角进行了参数估计。

The characteristic of primary arc is analyzed, and the dynamic model of primary arc is established. The line differential equation including primary arc voltage is constructed, and the parameter estimation technique is used to estimate the voltage amplitude of primary arc, so as to determine the fault type and realize adaptive three-pole-autoreclosure.

分析了一次电弧的特点，建立了一次电弧的动态模型，利用一次电弧的特点建立了包含电弧电压的超高压输电线路相间短路的线路微分方程，通过参数估计的方法求得故障点的电弧电压，以判断故障类型，实现自适应三相重合闸。

Sset future prices can be forecasted with filtering historical simulation by drawing from standardized residual density. The problem of inappropriate risk neutral assumption could be resolved by the calibration from density transformation. The transformation is to identify the state price density per unit probability through the parameter re-estimation by minimizing the mean squared error of market and model prices.

bstract：使用残差机率分配抽样的过滤历史模拟法可以作为未来资产价格的预测，而风险中立假设不适当的问题则可透过风险测度的转换予以解决，该转换过程系将市场价格与模型价格的均方差极小化求得估计校正后的新参数，作为状态价格机率分配的转换机制。

He and Nina moved to California and lived at 2005 Ivar Street, Apt.

他和Nina搬到加州，并在2005年伊瓦尔街，公寓生活。

Droperidol （ potently inhibits transfected HERGchannels and this is the probable mechanism for QT prolongation.

氟哌利多有效地抑制了转染的 HERG 钾通道，可能是 QT 间期延长的机制。