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计算梯度下降法计算极值,只能找到局部最小点。可以通过调整步长实现全局最小-Calculation of gradient descent method to calculate extreme value, can only find local minimum point. By adjusting the step size can achieve the global minimum
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图像重建常常被转化为解非线性无约束极值问题, 通过范数极小化推导出共扼梯度法的
一般算法。通过对模拟数据和实际工件断层扫描数据进行图像重建, 估计了算法的有效性, 结果表明, 与最速下降法相比, 此算法更适用于不完全投影数据的图像重建, 在保证重建图像拟合度的同时, 大大提高了重建速度。-Image reconstruction has often been transformed into solving nonlinear unconstrained extremum problem,
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压缩包里包含了无约束优化问题常用的几种求解方法的源程序:变量轮换法(variable_rotation.m)、最速下降法(steepest_descent.m)、修正牛顿法(modified_newton.m)、共轭梯度法(conjugate_gradient.m)。另外,coefficient_matrix.m为目标函数系数获得矩阵,minval.m为最小值计算函数,gradient.m为梯度计算函数-Compression bag contains unconstrained optimiz
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采用最速下降法查找最小值,采用H终止准则,计算时间很快,很适合初学者使用-Steepest descent method using the minimum search using H termination criteria, the computation time soon, it is suitable for beginners to use
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基于LM算法实现的均衡器。采用梯度估计近似实现最陡下降法。给出最后实验误差平方的均值曲线图。有完整的注释。-LM algorithm based on the equalizer. Similar to the realization of the estimated gradient steepest descent method. Finally, given the experimental error of the mean-square curve. Note complete.
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NUMERICAL OPTIMIZATION:
This steepest descent method with constant step length to find the minima of
f(x, y) = xy exp(− 2x^2 − y^2 + 0.3y)
Graphical represxentation in 5 ways of solution, simple and clear explained.-NUMERICAL OPTIMIZ
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Steepest descent have been applied to a biomedical application data and the component responsible for key operation is obtained
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In mathematics, the method of steepest descent or stationary phase method or saddle-point method is an extension of Laplace s method for approximating an integral, where one deforms a contour integral in the complex plane to pass near a stationary po
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最速下降法(steepest descent method)是以负梯度方向作为下降方向的极小化算法,又称梯度法,是1874年法国科学家Cauchy提出的,最速下降法是无约束最优化中最简单的方法。-Steepest descent method
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这是一个用最速下降法求解线性方程的方法,程序代码使用matlab语言。
-This is a steepest descent method for solving linear equations, program code using matlab language.
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最优化算法,最速下降法,matlab函数实现
function [istatus,xm,ym,lamda]=quickestdown(y,x0,lamda0, tol, maxIter)
最速下降法
输入:fun--目标函数
x--变量 x0---初始位置
lamda0--初始步长
tol---精度
maxIter--最大迭代次数
-Steepest descent method
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压缩包里包含了无约束优化问题常用的几种求解方法的源程序:变量轮换法(variable_rotation.m)、最速下降法(steepest_descent.m)、修正牛顿法(modified_newton.m)、共轭梯度法(conjugate_gradient.m)。另外,coefficient_matrix.m为目标函数系数获得矩阵,minval.m为最小值计算函数,gradient.m为梯度计算函数-Compression bag contains unconstrained optimiz
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最优化方法 最速下降法程序 MATLAB程序-MATLAB program optimization method of steepest descent method
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关于最优化算法的Matlab仿真程序,最速下降法与牛顿法。-Optimization algorithm Matlab simulation program, the steepest descent method and Newton method.
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本代码为《最优化理论与方法》书籍中的拥有Amijo改进的最速下降法算法的代码,并举了3个书上的作业题的例子,本代码中的目标函数和约束等初值可由需要进行改变,来得到所期望的计算-The code for the " optimization theory and method" books have Amijo improvement in the steepest descent method algorithm code, citing the three books on
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使用最速下降法求解二元函数的极值,内含区间取半法的一维寻优,有实例和说明,不只是算法。-Using the steepest descent method for solving the dual function of extremes, containing half the interval to take a one-dimensional optimization method, there are examples and illustrations, not just algori
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程序是通过最速下降法寻找三阶二维的目标函数的局布极值点。-Program is through the steepest descent method to find the objective function of the third-order two-dimensional local extremum point.
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解线性方程组的最速下降法,编译器用的是intel visual fortran-solve linear equations with steepest descent method
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带有MonteCarlo实验的最速下降法,应用于自适应滤波器-MonteCarlo experiment with the steepest descent method, used in the adaptive filter
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最速下降方法是最优化的主要方法,是最优化方向的主要分支-The steepest descent method is the main method of optimization, it is the main branch of the optimization direction.
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