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zuniniudunfa

于 2020-06-29 发布 文件大小:1KB
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  无约束优化问题的阻尼牛顿法python代码(Damped Newton Python code for unconstrained optimization problems)

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  • bycgste
    共轭梯度法(Conjugate Gradient)是介于最速下降法与牛顿法之间的一个方法,它仅需利用一阶导数信息,但克服了最速下降法收敛慢的缺点,又避免了牛顿法需要存储和计算Hesse矩阵并求逆的缺点,共轭梯度法不仅是解决大型线性方程组最有用的方法之一,也是解大型非线性最优化最有效的算法之一(Conjugate gradient method (Conjugate Gradient) is between the steepest descent method and Newton' s method between a method that takes only a first derivative information, but to overcome the slow convergence of the steepest descent method shortcomings, but also avoid the need to store Newton and computing the inverse Hesse matrix and disadvantages, conjugate gradient method is not only to solve large linear equations of the most useful methods, large-scale nonlinear optimization solution is the most efficient algorithms)
    2013-09-13 16:33:21下载
    积分:1
  • lsmd
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    2021-03-03 11:09:33下载
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  • 7756
    感应双馈发电机系统的仿真,基于分段非线性权重值的Pso算法,计算多重分形非趋势波动分析matlab程序。( Simulation of doubly fed induction generator system, Based on piecewise nonlinear weight value Pso algorithm, Calculation multifractal detrended fluctuation analysis matlab program.)
    2017-05-12 16:30:34下载
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    2013-10-15 19:44:22下载
    积分:1
  • FDTd
    对一个微带天线使用FDTD方法进行计算和分析,得到该天线反射系数,远区辐射场等信息(Right a microstrip antenna to use the FDTD method carry on calculated and analyzed, get this antenna reflection coefficient, far Ou radiation field and other information)
    2021-05-15 15:30:02下载
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    说明:  ADAM (Adaptive Moment Estimation)是另外一种自适应学习率算法,它结合动量梯度 下降法,在不同参数方向上采用不同学习率,保留前几次迭代的梯度,能够很好 的适应于稀疏数据。(ADAM (Adaptive Moment Estimation) is another adaptive learning rate algorithm, which combines momentum gradient. The descent method, which uses different learning rates in different parameter directions and retains the gradients of previous iterations, is very good. It is suitable for sparse data.)
    2019-04-09 19:59:50下载
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    2012-11-01 16:33:58下载
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    利用AR模型进行时间序列预测的程序源代码,使用最小二乘估计法进行参数估计。拟合效果非常好。(use AR model for time series prediction of the source code, the use of least squares estimation method to estimate parameters. Fitting very good results.)
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  • szfx
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    2015-11-18 14:08:22下载
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