using_ml

analysis( graphical and parametric ) of 1st-order , 2nd-order & nth-type systems (This Program Includes :::::::::::: 1:: Analysis of 1st order systems for 1.step signal ,2.ramp signal, 3. Accelaration signal. 2:: Analysis of 2nd order systems for 1.step signal, 2.ramp signal. 3:: Frequency analysis of 2nd order systems. 4:: Steady State Error Analysis of "0th" , "1st" , "2nd" type systems. 5:: Performance Indices of a System. )

AM_DSB_Modulation Techniques

power spectral density of signal codes for communication engineering students to understand the concept of statistical analysis.

根据输入的概率进行香农编码，然后输出必要的参数和编码的结果。其中有嵌套程序。(Probability under the Importation of Shannon coding, and then output the necessary parameters and the coding results. Which have nested procedures.)

wavelet programme for watermarking

matlab code iris data

最速下降法又称为梯度法，是1847 年由著名数学家Cauchy 给出的，它是解析法中最古老的一种，其他解析方法或是它的变形，或是受它的启发而得到的，因此它是最优化方法的基础。这里给出其Matlab源程序。(The steepest descent method, also known as gradient method, was in 1847 given by the famous mathematician Cauchy, it is the oldest analytical method one, other analytical method or its variants, or inspired by it obtained and therefore it is the basis for the optimization method. Here are its Matlab source.)

This function computes the fourier series of a signal x(t). The amplitudes of the fourier series have the same dimension of the original signal, so this function is useful for immediate computation of the actual frequency components, without further processing.

里面的文档详细阐述了LMS原理，包括常用的仿真方法，并附有使用LMS方法的自适应滤波的实例matlab仿真程序。(The document inside expounds the principles of the LMS in detail, including the simulation methods and a matlab simulation program of an adaptive filtering by using the LMS method.)

从wind采集期权数据并整理成矩阵形式，包括计算隐含波动率等(Collect options trading data, and make the data readable, calculate the implied volatility)