3_TCHcodec

这是一种改进的粒子群优化算法，通过简单的测试函数验证(This is an improved particle swarm optimization, through a simple test function verification)

说明：  这是一个混沌的Anrold变换 他是一次变换加密 是一个混沌加密入门程序(This is a chaotic Anrold transform He is a transformation encryption is a chaotic encryption entry procedures)

finite difference scheme for simple harmonic oscillator

基于DTW算法的语音识别原理与实现，相关论文及Matlab实现流程(The principle and implementation of speech recognition based on DTW algorithm, the relevant papers and Matlab implementation process)

matlab的并行处理方面的说明指导，能大大提高算法的速度，很有用(matlab parallel processing of instructions in the guide, can greatly increase the speed of the algorithm is useful)

LTE下行链路OFDM中的调制方式64QAM(LTE downlink OFDM Modulation of 64QAM)

讲述了现在机械故障诊断中用到的常用时频分析方法，如短时fft 魏格纳维尔分布 小波变换 HHT等，里面含有例子和详细说明，对初学者帮助很大。(Tells the now commonly used in mechanical fault diagnosis frequency analysis methods, such as short-time wavelet transform fft Wigner distribution HHT Louisville, etc., which contains examples and detailed instructions, very helpful for beginners.)

MATLAB可变电源，变压变频电源,该程序以S函数的形式产生一个可控三相交流电源(The MATLAB variable power supply, variable voltage variable frequency power supply)

PROGRAM CALCULATES THE CHARACTERISTIC IMPEDANCE OF A MICROSTRIP LINE(USING THE FINITE DIFFERENCE METHOD THIS PROGRAM CALCULATES THE CHARACTERISTIC IMPEDANCE OF A MICROSTRIP LINE)

处理lasso regression。 使用stochastic Markov property。(Algorithm for solving the Lasso problem: 0.5* (y- X*beta) *(y- X*beta)+ lambda* ||beta||_1 where ||beta||_1 is the L_1 norm i.e., ||beta||_1 = sum(abs( beta )) We use the method proposed by Fu et. al based on single co-ordinate descent. For more details see GP s notes or the following paper: Penalized Regressions: The Bridge Versus the Lasso Wenjiang J. FU, Journal of Computational and Graphical Statistics, Volume 7, Number 3, Pages 397?416, 1998 )