quadratic approximation
英 [kwɒˈdrætɪk əˌprɒksɪˈmeɪʃn]
美 [kwɑːˈdrætɪk əˌprɑːksɪˈmeɪʃn]
网络 二次逼近法; 二次近似; 二阶近似; 二次逼近
双语例句
- The CCT is determined by the crossing point of the quadratic approximation surface and the continuous faulted trajectory.
基于故障后电力系统稳定域边界的二次近似来估计临界切除时间。 - Recursive formulae of polynomials of quadratic Pad é approximation to exponential function
指数函数二次帕德逼近多项式的递推公式 - The Segment Rational Quadratic B é zier Interpolation and Approximation to Functions
函数分段有理二次Bézier插值与逼近 - The non-linear geodetic mixed boundary value problems in quadratic approximation
非线性混合大地边值问题的二阶项影响 - The paper presents a branch and reduce approach for solving nonconvex quadratic programming problems with quadratic constraints, which organically combines outer approximation method with branch and bound scheme.
在这篇论文里，有机地把外逼近方法与分枝定界技术结合起来，提出了解带有二次约束非凸二次规划问题的一个分枝缩减方法； - The Quadratic Programming Perturbation Approximation Method for the Linear Programming Problem
求解线性规划问题的二次规划摄动逼近法 - Range-Doppler ( RD) algorithm is a typical imaging algorithm for traditional narrow-band/ narrow-beam SAR. It only keeps the linear part and the quadratic term of the slant range distance by using Fresnel approximation.
距离多普勒（RangeDoppler，RD）算法是传统窄带/窄波束SAR的经典成像算法，它借助菲涅耳近似，只保留了斜距R（t）的线性部分和二次项。 - Quadratic Approximation Nonlinear Adaptive Predictive Controller Based on Neural Network
基于神经网络的二次逼近非线性自适应预测控制器 - Based on the modified Kolmogorov spectrum and quadratic structure function approximation, the expressions are derived for the variance and power spectrum of the angle-of-arrival fluctuation at large zenith angles.
基于修正Kolmogorov谱，运用相位结构函数的平方近似，导出了适用于大天顶角传输的到达角起伏方差及其功率谱的解析表达式。 - Having adopted the quadratic approximation of potential, we can solve the equation and get the approximately analytical solutions of Gaussian typed breath mode.
对势函数采用二阶近似后，求解此方程得到高斯型呼吸模式的光束宽度的近似解析式。 - A number of numerical experiments show that the algorithm has much higher speed and more stable convergency than the one that is sequential quadratic programming with first order approximation of the constraints.
数值实验表明，该法比约束一阶近似的序列二次规划解法效率高、收敛平稳。 - A further study given by the paper shows that so long as appropriate starting point is selected and reasonable locations of node points are positioned, two-dimensional quadratic splines always give precise approximation to many typical types of two-independent-variable chemical engineering curves.
本文还考察了将二维二次样条用于逼近各类典型的二维化工曲线族的误差，发现只要选取恰当的起始点和合适的节点布置，一般均能获得满意的精度。 - Critical Clearing Time Estimation of Power System Based on Quadratic Approximation of Stability Region
基于稳定域边界二次近似的故障临界切除时间估计 - An iteration method for the best quadratic curve normal approximation
二次曲线最佳法向逼近的插值点优化迭代法 - The exact analytic and steady-state solutions are derived for high-order Gaussian beam propagation modes in media with quadratic radial refractive index and gain ( loss) profiles based on the slowly varying envelope approximation ( SVEA).
本文在缓变波包络近似（SVEA）下导出了具有二次型径向折射率和增益（损耗）分布介质中高阶高斯光速传播波模的严格一般解析解和和稳态解。 - The contour tracing algorithm which can recognize those points on the left side and the right side of the contour is presented, and the polygonal approximation algorithm and the quadratic Bezier curve approximation algorithm are described, which utilize the direction of chain codes.
提出了可识别边界线上左右边缘点的边界跟踪算法、利用链码的矢量性的多边形逼近算法和二次Bezier曲线逼近算法。 - This paper deals with the Stokes flow of the arbitrary oblate axisymmetrical body by means of constant density and quadratic distribution function approximation for the method of continuous distribution of singularities, The Sampson spherical infinite series are chosen as fundamental singularities.
本文以Sampson球形无穷级数作为基本奇点，采用分段等强度和分段二次抛物分布两种体内连续分布法解任意形状扁轴对称体的Stokes流动。 - In this paper, for the function of Chebyshev expansion, the approximating function having the approximant's order of Chebyshev polynomials is given by means of Faber mapping and quadratic Pad é approximation of power series, and it is also expressed by the fraction of Chebyshev polynomials.
对于具有Chebyshev展式的函数，文章利用Faber映射及幂级数二次Padé逼近，给出其具有关于Chebyshev正交多项式的逼近阶的逼近函数，并将其用Chebyshev正交多项式分式表示。 - A recursive equality constrained quadratic approximation method with an augmented Lagrangian type penalty function for line search
采用增广拉格朗日乘子形式的罚函数作线性搜索的递归等式约束二次逼近算法 - The expression of the long-term optical-beam spreading radius is obtained by a quadratic approximation.
通过二次方近似得到了长期光束扩展半径表达式。 - Finally, the problem of quadratic programming with integer constraints is solved by utilizing ε-approximation with polynomial approximate complexity.
采用具有多项式近似复杂度的ε近似算法解决带整数约束的二次规划问题。 - By analysing the compute result of the quadratic approximation formula, we educe the conclusion that 3 is the best rank code for the quadratic approximation formula.
通过对最小二乘拟合公式实际计算结果的分析，得出了“拟合公式阶数取3为最佳”的结论。 - It adopts Chebyshev polynomial technology which has low approximation error and fast converging speed to approach sine function of acceleration/ deceleration expression, and speed and displacement are directly calculated according acceleration's quadratic polynomial to avoid the influence of approximation error on parameter calculation.
采用逼近误差小、收敛速度快的契比雪夫多项式对加速度正弦函数二阶展开，速度、加减速区间长度等参数则直接利用基于二阶多项式的加速度求解，避免了函数逼近误差对参数计算的影响。 - Sectional quadratic approximation for the calculation of bending load of the normal section of reinforced concrete component with annular cross section
环形截面钢筋混凝土构件的正截面抗弯承载力计算的分区二次逼近法 - Sorensen has used local quadratic approximation method, then applying collinear scaling idea improving on the above algorithm and generalizing it, getting a class of collinear scaling algorithm, unifying former quasi-Newton.
Sorensen依此原理用局部二次逼近手段，利用共线调比变换思想，改进了上述算法并进行推广，得到了一类共线调比算法，统一了原拟Newton算法。 - The main idea is to convert the K-T condition of the quadratic programming to a system of nonlinear nonsmooth equations. And then we apply Newton-type method to solve its smoothing approximation.
其主要思想是将二次规划的最优性K-T条件写成一个非线性非光滑方程组，并利用Newton型方法来解其光滑近似。 - The second one, algebraic search direction, is constructed via a quadratic approximation of three successive iterates.
第二个是代数搜索方向，它的构造是通过对三个连续的迭代点进行二次插值而得到的。