PCA-dimensionalityreduction

Some of the codeforces problems i ve solved

这是一个基于圆桌模型仿真阅卷。目标是为了达到用最少的人批改一定数量的试卷，正确率要高。即：前六名的人经过批改后，至少有三个还是在前六名。(This is a based on a the roundtable model simulation scoring. The goal is to reach a certain number of papers use the least amount of people marking the correct rate higher. : Top six man marking after at least three, or in the top six.)

产生、播放DTMF音频，基于Goertzel算法估计DTMF音频，完成双音多频(DTMF)信号的检测(Generating, playing DTMF tones, DTMF tones based on the estimated Goertzel algorithm to detect the completion of dual tone multi-frequency (DTMF) signal)

a good reference for study synchronization in wireless sensors networks

WiMAX物理层平台搭建，并实现了物理层小数时延和整数时延的添加，并并一定方法实现对时延的估计(WiMAX physical platform building, and implements the fractional time delay and integer delay to add the physical, and a certain method of time delay estimation)

matlab的源程序，能够显示出图像的灰度分布的直方图，好像用matlab的人不多阿(Matlab source, can display the image histogram of the distribution of gray, like using Matlab A few people)

说明：  Matlab在图像处理方面的代码 染色体识别与统计(Matlab code in image processing and statistical identification of chromosome)

用MATLAB做阶乘的和，比如1！+2！+3！+4！+。。。+10！(MATLAB to do with factorial and, for example, 1!+2!+3!+4!+...+10! )

层次分析 w0为准则层权重，w1为方案层权重， ts为总权重(Analytic Hierarchy guidelines layer weights, w1 program layer weights, ts total weights w0)

数字信号处理(matlab版)随书源代码，作者维纳K英格尔，柳树堂译，本书提供大量的数字信号处理matlab程序，讲解数字信号处理知识，使得学习很容易上手(Digital signal processing (matlab version) source code with the book, the author Wiener K Ingle, Liushu Tang translation, the book provides a large number of digital signal processing matlab program, explain the knowledge of digital signal processing, makes learning very easy to use)