登录
首页 » matlab » gradient descent

gradient descent

于 2019-02-21 发布
0 185
下载积分: 1 下载次数: 2

代码说明:

说明:  梯度下降法是一個一階最佳化算法,通常也稱為最速下降法。 要使用梯度下降法找到一個函數的局部極小值,必須向函數上當前點對應梯度(或者是近似梯度)的反方向的規定步長距離點進行疊代搜索。如果相反地向梯度正方向疊代進行搜索,則會接近函數的局部極大值點;這個過程則被稱為梯度上升法。(The gradient descent method is a first-order optimization algorithm, also commonly referred to as the steepest descent method. To find the local minimum of a function using the gradient descent method, an iterative search must be performed to the specified step distance point in the opposite direction of the gradient (or approximate gradient) of the current point on the function. If the search is reversed in the opposite direction to the positive direction of the gradient, it will approach the local maximum point of the function; this process is called the gradient ascent method.)

文件列表:

grad_descent.m, 2474 , 2019-02-12
梯度下降法.docx, 392595 , 2019-02-21

下载说明:请别用迅雷下载,失败请重下,重下不扣分!

发表评论

0 个回复

  • houghcircle
    ellipse hough detection matlab
    2010-06-05 03:44:51下载
    积分:1
  • MATLAB
    MATLAB图像处理MATLAB图像处理MATLAB图像处理MATLAB图像处理(MATLAB Image Processing MATLAB Image Processing MATLAB Image Processing MATLAB image processing)
    2009-05-15 22:49:09下载
    积分:1
  • SHUXUEGUIHUA
    在数学规划,尤其在数学建模中,很好用,可以参考(In mathematical programming, especially in mathematical modeling, easy to use, you can refer to)
    2013-12-15 17:39:45下载
    积分:1
  • lwpso
    用粒子群思想解决光谱分析问题,对学习光学知识的人很有帮助的,希望对大家有用(Idea of particle swarm to solve the spectrum problem, learning optical knowledge is helpful, and the hope that useful)
    2012-02-04 15:04:53下载
    积分:1
  • backsamp
    BACKSAMP Backsampling the subband images of the directional filter bank y = backsamp(y) Input and output are cell vector of dyadic length This function is called at the end of the DFBDEC to obtain subband images with overall sampling as diagonal matrices See also: DFBDEC
    2010-05-15 12:57:48下载
    积分:1
  • tree
    决策树分类的各种代码,包括ID3、c4.5等等,有界面可以运行(Various code of decision tree classification, including ID3, C4.5 and so on, there are interface can run)
    2014-10-13 14:35:31下载
    积分:1
  • EnergyWise
    EnergyWise1 does the actual savings calculation and simulates the thermal state within the kettle. heatexp1 and Tregres is used when you want to determine your own kettle s UA value. This is a fun activity to do when you have time. The mathematics may seem complicated, but I tried to make it as simple as possible without compromising on accuracy. See the .doc file I included. Hope all you guys are ready to save heaps of energy!! Contact me if you get stuck.
    2010-03-14 05:17:09下载
    积分:1
  • kda
    说明:  kda程序 用于matlab环境下不同核函数分类问题(kda program for matlab environment classification of the different kernel function)
    2009-08-06 09:52:11下载
    积分:1
  • Robotics_Toolbox_for_MATLAB_rel6
    System will automatically delete the directory of debug and release, so please do not put files on these two directory
    2010-06-02 20:35:12下载
    积分:1
  • IPM-OPF
    程序用于求解电力系统最优潮流,采用原-对偶内点算法,并辅以文献,有利于对内点法的学习。(Procedures for solving optimal power flow, the use of primal- dual interior point algorithm, supplemented by literature, internal point of law in favor of learning.)
    2021-03-22 09:29:17下载
    积分:1
  • 696518资源总数
  • 106155会员总数
  • 8今日下载