Problems_in_Algorithmic_Algebra

pca+svm源代码（matlab） matlab代码，pca进行特征提取，svm进行分类(pca+ svm source code (matlab) matlab code, pca for feature extraction, svm classification)

直接将秘密图像的高4bit隐藏在RGB载体图像的R,G,B层中所选的那一层的低4bit,并将秘密图像提取出来，最后显示。要求载体图像的大小大于等于秘密图像的大小，且秘密图像是二值或灰度图像(Directly to the secret image hidden in the high-4bit RGB vector images R, G, B layer, then a layer of selected low 4bit, and extracted secret image, the final show. Required size of the image carrier is greater than equal to the size of the secret image, and the secret image is a binary or gray image)

For quantum well Schrodinger poisson

shunt active power filter design

通过此文件，你可以学习机器学习中的单变量和多变量线形回归。文件提供了用matlab实现这一过程的代码和流程。(From the file you can know what is linear regresion in machine learning. We provide the source code written by matlab to implement this process.)

纠错输出编码的多类支持向量机,自己编辑的码本,完全随机编码,对于7-15类效果很好(err)

Matlab读取DBF文件的命令很实用的哦(Matlab commands to read DBF files)

FDTD仿真2维TM波金属方柱散射，利用UPML吸收，脉冲源激励(FDTD simulation two-dimensional metal side TM-wave scattering, absorption UPML using pulsed source incentives)

说明：  My friend give this to me. I hope it will be helpful to others.

按照用户输入的压缩率，完成对灰度图的压缩(Compression ratio in accordance with user input to complete the compression of grayscale)