查询词典 squares

Keywords Closed convex cone;gradient projection method;Least-squares solution;Inverse matrix problem;Inverse eigenvalue problem;Matrix completion problem;Optimal approximation

Article From 湖南大学；应用数学博士论文 2005年度闭凸锥；投影梯度法；最小二乘解；矩阵反问题；矩阵逆特征值问题；矩阵完全化；最佳逼近

In compressive sensing, the familiar least squares optimization is inadequate for signal reconstruction, and other types of convex optimization must be invoked.

在压缩传感，熟悉的最小二乘优化是不够的信号重建，和其他类型凸优化，必须援引。

In the roof reconstruction, a TIN-based region growing is applied to extract the roof planes. The coplanarity and adjacency between triangles are considered for TIN-based region growing. Then, a least squares regression is selected to determine the coplanarity function of planar segment.

在建物屋顶面重建中，使用建物轮廓线内部的光达点云进行屋顶面之共面分析，研究中使用三角网区域成长法侦测共平面之屋顶面，以相邻三角网法向量夹角做为共平面门槛，并以最小二乘法回归出屋顶面之平面，产生房屋模型。

The estimation bias is compensated by introducing a correction term in the recursive least squares estimate.

通过在递推最小二乘算法中引入一个修正项，补偿过程噪声引起的估计偏差。

On the basis of the theory of least-squares collocation, the approach used to define a local covariance function is described.

从最小二乘配置方法的原理出发，描述了最小二乘配置法中经验协方差函数的确定方法。

The elementary theory of Least-Squares Collocation in Physical Geodesy is described in detail in this thesis, as well as the method defining the covariance function, which is the key problem when utilizing LSC in physical geodesy.

本文描述了最小二乘配置法的基本原理及其基础理论，详细探讨了经验协方差函数的确定方法。

Based on a questionnaire of five representative culture squares in Pearl River delta, a principal component analysis and comprehensile evaluation are made.

针对珠江三角洲5个比较有代表性的文化广场进行了问卷调查并利用主成分分析方法对其环境质量状况进行综合分析与评价。

Secondly, by the P-L estimation of survivor function, this paper proposed the regression models of polynomial cumulative hazard function distribution models, respectively in the case of complete date and random right censoring date; meanwhile generalized least squares estimations of unknown parameters were proposed respectively using two steps algorithm and principal component analysis algorithm.

与已有的关于多项式危险函数模型的研究成果相比，首先本文在统计模型的构造上充分考虑了累积危险函数乘积限估计量的非独立性，给出了协方差矩阵的估计；其次在模型检验方面，本文利用非参数回归分析方法，充分利用了数据本身的信息，减少了对回归关系假定的主观因素，因而分析结果更为可靠。

This procedure is the core of the least-squares method of curve fitting.

这个程序的核心是用最小二乘法进行曲线拟合。

The influence of least squares curve fitting algorithm to the result of measurement has been analyzed too.

并分析了最小二乘曲线拟合谱线的线宽对测量线宽的影响。

The production moved off-Broadway to New York City, where she won the Joseph E. Calloway award for her performance, and was profiled in American Theater Magazine as one of ten young theater artists to watch.

生产提出过百老汇的新的纽约市，在那里她赢得了约瑟夫calloway奖，她的表现，并于异型在美国的战区杂志之一， 10战区的青年艺术家观赏。

It's a risk tradeoff, and I believe that adding test support code usually wins.

这是一个风险的权衡，我相信添加测试代码通常会占上风。