1) Optimally weighted least squares
最优加权最小二乘
1.
The discussion on the performance coparison among least squares estimate, optimally weighted least squares estimate and linear unbiased minimum variance estimate of column singular design matrix for a linear model is presented.
在给定的线性模型下 ,讨论了在设计阵列亏秩时 ,最小二乘估计、最优加权最小二乘估计和线性无偏最小方差估计的性能比较 。
2) optimally weighted LS estimate
最优加权最小二乘估计
1.
Linear minimum variance estimate and optimally weighted LS estimate are often used in many fields such as signal processing,control and communications.
在信号处理、控制和通讯等技术领域,常常使用线性最小方差估计和最优加权最小二乘估计对参数作出估计。
3) Weighted least square method
加权最小二乘法
1.
It fuses the weighted least square method in the process of expanding the local map systems to improve location precision.
针对该问题,提出一种改进的基于无线传感器网络坐标系统拓展定位算法,在拓展局部坐标过程中融合加权最小二乘法来抑制累积误差,从而提高节点定位精度。
2.
By constructing the conditional mean of the interval censored covariate,the estimators of parameters are obtained by the weighted least square method.
研究了当协变量为区间数据时的变系数一维线性结构关系模型,通过构造区间数据变量的条件均值,它与区间数据变量具有相同的均值,然后利用加权最小二乘法得到了变系数一维线性结构关系模型中的参数估计,当协变量的分布已知时,证明了估计的弱相合性和强相合性。
3.
This paper uses iterative weighted least square method based on MATLAB soft for makingrobust estimation by the example of the Runyang Bridge engineering.
经典的LS估计法(least squares estimation,LS estimation)是对每个观测数据都给予相同的权重,由此带来了对于异常值的处理不当,从而影响了回归模型的有效性,本文采用迭代加权最小二乘法来进行稳健估计(RobustEstimation),并基于MATLAB软件结合润扬大桥工程实例说明了此法的有效性。
4) weighted least square
加权最小二乘法
1.
Parameter estimation with equality constraints based on weighted least square;
带等式约束的加权最小二乘法参数估计
2.
Methods Marginal proportion functions were calculated by using weighted least square (WLS) method through SAS system.
方法采用加权最小二乘法建立边际函数模型,给出治疗中风临床试验实例,调用SAS统计软件包中CATMOD过程对重复测量分类数据资料进行统计分析。
3.
The initial data is preprocessed at first,then the universal M-estimation is transferred to WLS(weighted least square) and the weight coefficients are related with the errors.
该方法首先对生数据进行预处理,然后基于抗差原理,利用权因子把一般性的M估计转换为加权最小二乘法,并将权系数和余差联系起来,有效地解决了常规加权最小二乘法中,由于常数权系数所导致的,对粗差处理能力不足的问题。
5) weighted least square
加权最小二乘
1.
The main algorithms of flush airdata sensing system are introduced,include weighted least square algorithm,triples algorithm and neural network algorithm.
嵌入式大气数据传感系统是一种依靠嵌入在飞行器前端的压力传感器阵列来测量飞行器表面的压力分布,并由此压力分布通过求解非线性方程组间接获得飞行参数的先进飞行数据传感系统;介绍了嵌入式大气数据传感系统及其主要的求解算法,主要包括加权最小二乘法、三点法和神经网络方法,针对每种算法分别给出了其迎角、侧滑角和动压、静压的求解公式,最后对3种算法进行了比较,结果表明神经网络方法相对与其他两种方法来说是比较理想的FADS系统的求解算法。
2.
The design of finite impulse response(FIR) digital filters with complex coefficients for which the weighted least squares error is minimized,subject to maximum error constraints is concerned.
考虑了一类加权最小二乘复系数FIR滤波器的设计问题,要求滤波器通带及止带内频点的频率响应与期望响应误差小于给定的最大误差门限。
3.
In this algorithm the time difference of arrival and time of arrival measurements are firstly smoothed and reconstructed, then a two step weighted least square algorithm is employed to estimate the position of MS.
用蜂窝网络对移动台进行定位估计时,为了降低电波的非视距传播对定位精度的不利影响,提出了一种先对电波到达时间差和到达时间测量值进行平滑和重构,再采用两次加权最小二乘算法对移动台进行定位估计的算法。
6) weighted least squares method
加权最小二乘法
1.
The antecedent parameters of Takagi-Sugeno fuzzy model are off-line identified by fuzzy C-means algorithm,its consequent part is determined by weighted least squares method.
模型的前件参数由模糊C均值聚类算法确定,后件参数由加权最小二乘法离线辨识,并用现场实测数据对模型后件参数进行在线调整。
2.
And the weighted least squares method is presented for gaining more accurate results of correlation dimensions.
在数据后处理方面,本文提出了加权最小二乘法,使维数计算更精确,更适合实际。
补充资料:加权最小二乘法
分子式:
CAS号:
性质:根据在一组不等精度测定值中,最佳值是能使各测定值的加权偏差平方和为最小的那个值的原理,进行参数估计的方法。
CAS号:
性质:根据在一组不等精度测定值中,最佳值是能使各测定值的加权偏差平方和为最小的那个值的原理,进行参数估计的方法。
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