查询词典 least squares

It considered three types of distortions, i.e., pincushion distortion, S distortion and image offset as a whole, and fitted the composite distortion of the images by the Nth order polynomial, and then obtained the optimum image correction coefficient by the least squares approach.

该方法统一考虑C臂投影图像的3种类型的失真——针垫失真、S型扭曲、图像偏移，利用N阶多项式拟合图像的复合失真，然后利用最小二乘法求解最优化校正系数，从而具有所需标记点数量较少，校正区域连续，步骤简单，易于在线使用的优点。

The planarity and the average degree of the bond of the initiators are discussed by the full-matrix least-squares on F〓.

通过最小二乘法计算结果，讨论了分子的平面性及键长平均化程度，诠释了分子内电荷转移的趋势及有可能的引发机理。

This paper presents the cumulative-sum is a new data processing methods, It is a similar effect with the least squares method, it is more than simple arithmetic, Based on photoelectric effect measured Planck constant example, Introduced the methods for solving a linear equation with cumulative-sum method.

本文介绍的累积法是一种新颖的数据处理方法，它是一种效果与最小二乘法相同，比它更简明的运算方法，本文以光电效应法测普朗克常数实验为例，介绍了用普通累积法解一元线性方程的方法。

In first part it pays attention to theory study. Afterwards, based on linear programming, we introduce some properties of conic optimization and its dual problem, which are a kind of especial convex programming. In second part, we apply these theories to practice, such as least-squares problems, polynomial solution and approximating covariance matrices, and other aspects .

第一部分是理论研究：在线性规划的基础上重点介绍了一种特殊的凸规划类型——锥规划及其对偶锥规划，并介绍了锥规划及其对偶锥规划的发展及其性质。

Relationship between the dual form and primal form of solution based on SVM method in a frameable reproducing kernel Hilbert space is studied. Furthermore, by combining SVM method with least squares method, semiparametric estimation of SVM is discussed.

在基于标架型的再生核希尔伯特空间中，研究了SVM算法下，解的对偶形式和原形式之间的关系，进而将SVM算法与最小二乘法相结合，讨论了支持向量机的半参数估计。

The highly sensitive chromogenic reaction of a ternary complex of 4-(2-benzothiazolylazo) pyrocatechol with Mo-, W-diphenyl guanidine and the application of partial least squares method in simultaneous spectrophotometric determination of trace Mo and W have been studied.

本文研究了新显色剂4-(2-苯并噻唑偶氮)邻苯二酚-Mo、W-二苯胍三元配合物的高灵敏显色反应以及偏最小二乘法在同时分光光度测定痕量钼和钨中的应用。

First, a smooth curve is obtained from the data by curve fitting with the method of non-linear least squares fit. Then the tangent vector and the radius of curvature of each point on the curve can be calculated for the error evaluation. With the fitted curve, the focusing state of the aspheric lens can be obtained by the method of ray tracing.

主要过程为首先采用非线性最小二乘拟合的方法进行曲线拟合，并计算出曲线上各点的切矢量和曲率半径，分析它们的误差，最后对拟合后的曲线用光线追迹的方法得到非球面镜的聚焦情况。

This is an article on the literature of system identification algorithm is a recursive least squares method improvements.

详细说明：这是一篇关于系统辨识算法的文献，是对递推最小二乘法的改进。

The steps of Reduced Gradient optimal method is used on solving the Least Squares theory model. At some situation, some nodes pressure and supply of all water-supply sources are measured in Xi'ning (resistance parameter of all pipes are known). By using the pressure of the experiment and optimal measure points, the state simulation is done respectively to get all nodes' pressure.

利用简约梯度优化法求解给水管网状态估计的最小二乘数学模型，实测某一工况下西宁市配水管网部分节点水压H_0、各水源供水量分别用优化选择的测压点水压和按经验选择的测压点水压估计所有节点的水压，对西宁市配水管网进行了状态估计。

The regression equation and regression line are derived using the least-squares technique.

回归方程式及回归线可以采最小平方法之技术求得。

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。