dds

calculate a stock s liquidity index

说明：  对声音中的杂音进行过滤，并在新的文件夹中 自动保存(Murmur of voices in the filter, and in the new folder automatically saved)

in this file programm of finding pca analysis is given

The shuffled complex evolution with principal components analysis–University of California at Irvine (SP-UCI) method is a global optimization algorithm designed for high-dimensional and complex problems. It is based on the Shuffled Complex Evolution (SCE-UA) Method (by Dr. Qingyun Duan et al.), but solves a serious problem in searching over high-dimensional spaces," population degeneration". The population degeneration problem refers to the phenomenon that, when searching over the highdimensional parameter spaces, the population of the searching particles is very likely to collapse into a subspace of the parameter space, therefore losing the capability of exploring the entire parameter space. In addition, the SP-UCI method also combines the strength of shuffled complex, the Nelder-Mead simplex, and mutinormal resampling to achieve efficient and effective high-dimensional optimization.

从基本的bpsk,qpsk,qam到实际的ofdm系统，cdma链路，mac层仿真分析，(From basic bpsk, qpsk, qam to the actual ofdm systems, cdma link, mac layer simulation analysis,)

一本很好的教材，讲关于MATLAB-SIMULINK在仿真中的应用(A very good book, talk about simulation and application MATLAB-SIMULINK)

该程序是一段简单 的LSTM程序，是基于matlab的，容易理解和学习(This program is a simple LSTM program based on matlab, and very easy to understand and learn.)

二维相位解包裹；用相移法和傅里叶变换法重建物光场相位(Two phase solution package)

matlab裂缝图像分割，先进行二值化，后边缘检测，最后用ostu类方间法阀值分割。(crack matlab image segmentation, binarization first, after edge detection, and finally between ostu class threshold segmentation method.)

在Matlab中扫描二维码,自己做的一个测试程序，基本功能包括：扫描与解码(scan and decode QR in Matlab)