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功能：输入一页文字，程序可以统计出文字、数字、空格的个数功能：输入一页文字，程序可以统计出文字、数字、空格的个数(code)

该程序实现了字符串提取算法，算法中使用了Boost库来处理字符串。(The program implements string extraction algorithm, the algorithm uses the Boost library to handle strings.)

i am testing. pls check and try to know clearly about this code

PCA(主成分分析法)、LDA(线性判别法)两种方法是主要的的线性降维法，有非常好的效果，希望对大家能够有用！ 已通过测试。 (PCA (Principal Component Analysis), LDA (linear discriminant method) two methods are the main linear dimensionality reduction method, with very good results, we hope to be useful! Has been tested.)

AppLog is a simple application logging utility. (AppLog is a simple application logging utility.)

代码行数统计，一个非常有用的东西，希望各位喜欢(code a few statistics, a very useful thing, I hope you like)

MATLAB高等变换数学变换及建模分析的良好入门教材，可供各校研究生只用(MATLAB higher transformation mathematical transformation and modeling analysis of the good introductory teaching material, the schools only for graduate students )

Filtros Ma t lab trae varios filtros para series de tiempo

扩展卡尔曼滤波，无迹卡尔曼滤波，粒子滤波三种算法的比较，matlab程序。(Extended Kalman filter, unscented Kalman filter, the comparison of the particle filter three algorithms, Matlab program.)

说明：  抽象类以及纯虚函数的相关笔记。Figure作为基类，派生出Circle，Square(Abstract classes and pure virtual functions related notes. Figure as a base class, derived Circle, Square)