查询词典 estimation of parameter

The fourth chapter in this paper introduces the modeling ideas of stochasticvolatility into panel data model and puts forward panel data stochastic volatilitymodel. The Kalman Filtering can be employed to filter out the quasi-likelihoodfunction of the model and quasi-maximum likelihood estimation is used as achief means of estimating the parameter of the model.

第四章则将随机波动建模思想引入平行数据模型，提出平行数据随机波动模型，运用卡尔漫滤波方法得到模型的伪似然函数，进而采用极大似然估计方法求解模型参数。

Actually, the uncertainty of survey data composes a lot of factors, not only stochastic variable. So traditional parameter estimation theories are not strict. To overcome their shortcoming, Prof.

实际上，测量数据的不确定性是多种不确定因素的综合，而不仅仅是由随机误差组成，因此使用目前的任何一种参数估计方法来处理测量数据都是不严密的。

The parameter estimation and hypothesis test of the model under heterogeneity are reviewed.

分别就方差相等和方差不等两种情况给出模型的统计分析方法。

First, the time series model of the random road roughness running by construction machinery is built up based on the measured data of the random road roughness and by means of the basic theory and method of the time series analysis. A real-time parameter estimation method of fuzzy weighted recurrence least square algorithm is represented through analyzing the conventional recurrence least square algorithm. Then, the new recurrence algorithm and the on-line tuning method of the weighted matrix are given out, and computer simulation is performed.

首先，以实测的地面随机不平度数据为依据，应用时序分析的基本理论和方法，建立了工程机械行驶地面随机不平度的时间序列模型，并在分析传统参数估计方法递推最小二乘算法的基础上，提出了模糊加权递推最小二乘算法的参数实时估计方法，给出了在此基础上的递推算法及加权矩阵的实时在线整定方法，并对其进行了计算机仿真研究。

Mathematical model、control method、parameter estimation and false tolerance of multiphase permanent magnet synchronous motor electric power propulsion system are studied in this thesis, with the project of "Permanent Magnet Material and 1000kW PMSM Propulsion Motor Technique" and"AC-DC-AC Electric Power Propulsion System Technique"as background, which is important national"The Ninth Five-year Plan"project studied in Advance.

本文是以国家"九五"重点预研项目"永磁材料和1000kW机电一体化永磁同步推进电机技术"为背景并结合课题"交—直—交电力推进系统技术"进行的。

As a result, the statistic feature of measurement error becomes different,and the derived rheological parameter estimation tends to be no unbiasedness and with the least variance.

钻井液流变模式的参数估计问题大多使用线性回归方法求解，然而，线性回归方法改变了测量误差的统计特征，使得所得到的流变参数估计不具有无偏性和方差最小等特点。

Treasury bond market, the interest- rate- transmission-effect-testing model has significant parameter estimation, displaying undeclinable influence of monetary policy on interest rate latent factors, negative effect on output and inflation, positive effect on short-term interest rate, and negative effect on long-term interest rate due to inflation expectation decreasing under positive shock of monetary policy.

对于美国为代表的成熟金融市场，利率效应检验的利率期限结构模型参数估计具有高显著性，货币政策对利率潜在因素的影响无法忽略，对产出和通货膨胀都产生负效应，对短期利率产生正向影响、对长期利率则产生负向影响——因为货币政策正冲击显示了货币当局对通货膨胀率的调控态度，长期利率会因预期通货膨胀的下滑而降低。

For exponential distribution, the acquired estimate expression is the same as the result obtained by other method in reference [8]; for Weibull distribution, the author prove that γ satisfies a non-linear equation and λ is afunction of y; for lognormal distribution, a iterative algorithm for parameter estimation is proposed, which is the expansion of some results in Wolynetzs Ph.D. thesis.

对指数分布，得到的估计表达式与文献[8]中使用其他方法得到的结果相同；对Weibull分布，论文证明了参数γ满足一个非线性方程，而λ则可以直接由含有γ的表达式求出；对对数正态分布，论文给出参数估计的迭代算法，这可以看成是Wolynetz博士论文结果的推广。

A motion parameter estimation method by fitting the phase history of the moving target is proposed for airborne dualchannel SAR systems. The crosstrack velocity, alongtrack velocity, crosstrack acceleration and alongtrack acceleration can be estimated, respectively.

针对机载双通道合成孔径雷达(synthetic aperture radar， SAR)系统中运动目标参数估计，提出了一种利用目标相位历程拟合目标运动参数的方法，包括距离向速度、方位向速度、距离向加速度和方位向加速度估计。

According to their shape characteristics, the parameter estimation algorithms of circles and ellipses are proposed based on the corresponding constraint condition.

根据圆和椭圆的形状特性，提出了相应的约束条件及圆和椭圆参数求解算法。

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。