deriv2

说明：  最速下降法是迭代法的一种,可以用于求解最小二乘问题(线性和非线性都可以)。在求解机器学习算法的模型参数，即无约束优化问题时，梯度下降（Gradient Descent）是最常采用的方法之一，另一种常用的方法是最小二乘法。在求解损失函数的最小值时，可以通过梯度下降法来一步步的迭代求解，得到最小化的损失函数和模型参数值。反过来，如果我们需要求解损失函数的最大值，这时就需要用梯度上升法来迭代了。在机器学习中，基于基本的梯度下降法发展了两种梯度下降方法，分别为随机梯度下降法和批量梯度下降法。(The steepest descent method is a kind of iterative method, which can be used to solve the least squares problem (both linear and nonlinear). In solving the model parameters of machine learning algorithm, that is, unconstrained optimization, gradient descent is one of the most commonly used methods, and the other is the least square method. When solving the minimum value of loss function, the gradient descent method can be used step by step to get the minimum value of loss function and model parameters. Conversely, if we need to solve the maximum value of the loss function, then we need to use the gradient rise method to iterate. In machine learning, two kinds of ladders are developed based on the basic gradient descent method)

该压缩包包括两个m文件，一个为IEEE推荐的UWB信道模型的matlab仿真程序，另一个为对应的RMS时延扩展计算，并附带了一个文档文件作说明。(The archive includes two m files, one for the IEEE UWB channel model recommended by the matlab simulation program, and the other for the corresponding calculation of RMS delay spread, and comes with a document file for instructions.)

Tutorial using GUI in MATLAB

digsilent软件平台下关于最优潮流计算的仿真(digsilent software platform simulation on optimal power flow calculation)

Wimax performance analysis

用matlab解决一些数值分析中常用的算法，如牛顿法、gauss、romberg等(Using matlab to solve some numerical analysis of commonly used algorithms, such as Newton method, gauss, romberg, etc.)

认 知 无 线 电 谱 分 析 技 术(Spectral analysis of cognitive radio)

matlab计算股市的代码,可以帮助你分析股市，胜券在握！(matlab code for stocks)

这是一个三相SPWM逆变器，通过simulink对其进行仿真。(This is a three-phase SPWM inverter, through its simulation simulink.)

matlab读取netcdf格式数据的函数(matlab function reads the the netcdf format of data)