查询词典 least squares estimator

For robustness of parameter estimation of linear model,we obtain the maximal classes of the error distribution,in which Generalized Least Squares Estimate,Gauss-Markov Estimate of estimable function of parameters,and Minimum Norm Quadratic Unbiased Estimator of variance maintain their optimal statistical properties.

这些研究成果不仪具有比较深刻的理论意义，还具有较为广泛的应用价值。

The Least Z-Difference algorithm using Least Trimmed Squares estimator is proposed in this paper.

提出一个使用截尾最小二乘估计的最小高差算法，该算法在迭代过程中通过基于高差直方图的自适应阈值来区分变形区观测量。

To register two partially-overlapping mesh surfaces, the least median of squares estimator is adopted to estimate the rigid body transformation, which is composed of two parts of"generation of hypothesis"and "verification of hypothesis".

为配准两个局部重叠的网格面，采用最小平方中值估算器来计算刚体变换，它由"假设的产生"和"假设的验证"等两个部分组成。

So, considering the character of deformation, a novel algorithm called LZD using differential model is proposed associated with least trimmed squares estimator, which is a robust estimator with high break-down point. It enhances the deformation detecting ability and matching accuracy when large deformed area exists in matched DEM.

因此，顾及地表变形的特点，结合高崩溃污染率的截尾最小二乘估计，提出基于差分模型的差异探测算法，进一步提高了在大面积变形情况下的DEM表面差异探测能力和匹配精度。

Byusing several technologies including linearization method, penalty function, virtual observation equation and equivalent weights method, the robust data reconciliation problem can be transformed into a least squares estimator problem.

通过使用线性化方法、罚函数法、虚拟测量方程和等价权法，鲁棒数据校正问题被转化为最小二乘估计问题。

In order to improve the monitoring precision and resolution of tropospheric zenith delay, the hybrid approach, using a batch least squares estimator but parameterizing the zenith delay by a linear spline with knots at 30-minute intervals and treating the knots as a Gauss-Markov process, is employed to deal with the tropospheric zenith delay.

为了提高对流层天顶延迟的监测精度和分辨率，我们采用了分段的参数估计和随机过程相结合的估算方法来处理对流层延迟，由此获得了分辨率分别为2 h和30 min，精度好于1 cm的天顶延迟量。

The thesis analyzes the methods for parameter estimation of distributed sources in detail, and low complexity estimators, comes up with RELAX in parameter estimation and robust method of high resolution parameter estimators for distributed sources, and gives theory analysis and simulation results. The main work is:1 This text gives a study of the signal models of two kinds of distributed sources: coherent distributed sources and incoherent distributed sources, analyzes eigenvalue distribution of correlation matrix.2 Systematically introduced parameter estimation of distributed sources on the base of models, including the maximum likelihood estimate, least squares estimator, DSPE, DISPARE, etc.

论文详细分析了已有分布式目标参数估计方法及低复杂度的参数估计方法，提出了分布式目标参数估计的RELAX算法和具有稳健性的分布式目标高分辨估计方法，并给出了相应的理论分析和仿真实验结果。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。