查询词典 least squares

Least-squares method is a system identification in the most basic method of parameter estimation.

最小二乘法是系统辨识中参数估计的最基本方法。

In the process of calculating Euler's equation, the least squares algorithm is a common choice.

在解欧拉方程的过程中，常用的方法是最小二乘法求解。

In view of describing latent variables influence which are faced to the model of relationship between customer satisfaction degree and its influence factors, integrating the respective characteristic of partial least squares method and the structure equation model, this paper proposed the question that the structure equation model application in service industry which is based on PLS method; take the system thinking as the instruction, construct the model of customer satisfaction in the technical project service industry which take the customer satisfaction degree as endogenous latent variables, and take the customer expected, the sensation quality and the sensation value as exogenous latent variable.

本文针对描述客户满意度与其影响因素间关系模型所面临的潜变量影响，结合偏最小二乘法与结构方程模型各自的特点，提出了基于PLS的结构方程模型应用在服务行业的问题；以系统思想为指导，构造了以客户满意度为内生潜变量，以客户期望、感知质量与感知价值为外生潜变量的技术工程服务行业客户满意度模型。

It provides a way to find optimal lower dimensional approximations of the given data, and It enormously reduce the storage of the data which is needed when the physical processes is recurred. The physical process can be described in series expansion function that only is related to the time and space. It is optimal approximation of the given data in a certain least squares optimal sense. The most obvious advantage of the method is that it reduces the computation cost and computation time markedly.

它提供了一种描绘物理过程的有效方法，该物理过程可以写成一个只与时间相关的函数和一个只与空间相关的函数的展开式序列，且它们在均方意义上是最优的，在展开式中只需要少量的项数就可较准确地描述该物理过程，因此降低计算维数、减少计算量和节省计算时间是这个方法最明显的优点。

100 In accordance with test samples collected, the use of least squares of thought, can be fitted curve N times.

根据试验采集的10-100个采样点，利用最小二乘思想，可以拟合出N次的曲线。

Extracting optical aperture synthesis observation objective fourier information based on least-squares approach［J］.

基于最小二乘法准则的光学综合孔径观测目标傅里叶信息提取［J］。

In the analysis frame about house market and land market, this research has set up a simultaneous equation model of urban house prices and land prices in China. Collecting 35 major metropolitans database from 2003 to 2005 and using two stages least squares method, this research analyzes the endogenous and exogenous determinants which have caused the inter-metropolitan variation in the house prices and land prices in China.

在住宅市场与土地市场的联动分析框架内，本研究构建了中国城市住宅价格与土地价格的联立方程模型，通过收集中国35个大中城市2003年到2005年的105个样本数据，利用两阶段最小二乘法系统分析了住宅价格与土地价格城市间差异的内生决定因素和外生决定因素，考察了这些因素的作用方向和影响程度。

Based on the least squares principle, a fundamental detection algorithm is proposed.

在电能质量调节装置中，基波分量的提取精度和速度在很大程度上影响其性能。

Main contents of the thesis include point and edge extraction based on least-squares template matching; space circle template matching and reconstruction; outlier detection and elimination with fundamental matrix and trifocal tensor; improvement of Homography-based calibration technique, 2D-DLT and bundle adjustment based non-metric camera calibration technique with planar-scenes, point-line hybrid photogrammetry and visual inspection.

本文的主要研究内容包括影像格网点与直线段的自动最小二乘模板匹配；基于物方直接解的空间圆匹配与重建；利用基本矩阵和三视张量进行观测值粗差的剔除；同形矩阵摄像机标定算法的改进；基于二维 DLT 和光束法平差的非量测数字摄像机标定；点、线混合摄影测量模型与视觉检测精度分析等。

Supersonic flow ; hypersonic flow ; finite element methods ; quasi-parabolic Navier-Stokes equations ; Galerkin/Least-squares

超音速流；高超音速流；有限元法；拟抛物N－S方程；伽辽金／最小二乘方

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。