查询词典 least squares

Secondly, least-squares solution for the inverse problem of real symmetric matrices with a submatrix constraint is proposed.

研究了子阵约束下实对称矩阵反问题的最小二乘问题。

On the ground that the covariance between the disturbing gravity field elements is not isotropic, the covariance matrix has a complicated structure (its submatrix being not repetitive Toeplitz matrix) and thus its degree cannot be degraded with transformation matrix method, so it cannot be put into practice. So far, the application of least squares collocation to the modeling and data processing of the horizontal disturbing gravity field observations has not been found in literature.

由于水平扰动场元之间的协方差并非各向同性，导致协方差矩阵结构复杂(子矩阵不是 Toeplitz 循环阵)，不能利用变换矩阵将其降阶，无法付诸实践，迄今尚无最小二乘配置理论应用于水平扰动场元观测量的模型化公式和数据处理方法。

Based on the theory of least squares estimation, the paper established strict adjustment model for irregular Digitized Curves in GIS.

基于最小二乘原理，建立了GIS中不规则曲线数字化数据处理的严密平差模型。

Based on the chaotic characteristic of time series of power loads and combining the phase space reconstruction theory of chaotic time series and regression theory of supporting vector machines, a short-term load forecasting model based on chaotic characteristic of loads and least squares SVM is built.

以负荷时间序列的混沌特性为基础，结合混沌时间序列的相空间重构理论和支持向量机的回归理论建立了一种基于负荷混沌特性和最小二乘支持向量机的短期负荷预测模型。

In this method, a global approximately optimal solution of all ANFIS parameters is obtained using genetic algorithm and then premise parameters and consequent parameters are fine tined respectively using BP algorithm and Least Squares Estimate.

这种新混合学习方法首先利用遗传算法得到ANFIS所有参数的一个全局近似最优解，然后再利用BP算法和最小二乘法分别对前提参数和结论参数进行细化调整。

In order to predict and control the traction trafficability of a lunar rover, an algorithm for mechanical parameters estimation of lunar soil basing on linear-least squares method was presented, two key mechanical parameters, cohesion and internal friction angle were reversely estimated.

为了预测月球车的牵引力并进行牵引控制，提出了一种基于线性最小二乘法的月壤力学参数估计算法，对内聚力和内摩擦角这两个关键的月壤力学参数进行反求。

Last,the authors figures out the parameters of linear transformation equation by the Least-squares method.

用最小二乘法统计方法求出连续视频帧之间运动参数的线性变换方程。

Jacobian Davis iterative method of solving equations AX = B, least squares polynomial fitting, portfolio Simpson formula for integration, with a triangular decomposition method of solving equations AX = B.

拉格朗日插值多项式拟合，牛顿插值多项式，欧拉方程解偏微分方程，使用极限微分求解导数，微分方程组的N=4龙格库塔解法，雅可比爹迭代法解方程AX=B，最小二乘多项式拟合，组合辛普生公式求解积分，用三角分解法解方程

There are four parts in this thesis, the main works of author are summarized and presented as follows:1. Multivariate curve resolution with alternating least squares and alternating trilinear decomposition are applied in the resolution of overlapping peaks of camptothecin and 7-ethyl-10-hydroxy- camptothecin (SN-38) from HPLC-DAD.

全文共分四章，作者的主要工作有以下三个方面：一、采用HPLC-DAD检测，结合多元曲线分辨-交替最小二乘和交替三线性分解方法对未优化的色谱分离条件下产生的7-乙基-10-羟基喜树碱(SN-38)和喜树碱的严重重叠的色谱峰进行分辨。

To design a TSK fuzzy system with good generalization ability in high dimensional feature space, a novel learning algorithm based on the least squares support vector regression is presented in this paper.

为了提高模糊系统处理高维问题的推广能力，本文提出用最小二乘支持向量回归机的思想设计TSK模糊模型。

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。