pf

利用大整数问题实现catalan数的求解，catalan数的计算涉及到互质问题(The use of large integer problems solving to achieve catalan number, catalan calculation of the number of issues related to coprime)

FFT变换,获得采样数据基本信息，时域图，频域图,FFT transform, sampling data basic information, time domain, frequency chart(FFT transform, sampling data basic information, time domain, frequency chart)

pca和kpca程序，对大家有很大的帮助，系统辨识和故障识别，很有用的，谢谢(Pca and kpca program, to all have a big help, system identification and fault recognition, very useful, thank you )

编码教常用的哈弗曼编码的MATLAB仿真的源程序(MATLAB source to huffman coding)

说明：  matalb应用在工程数学应用和他的一些符号数学工具箱(matalb used in engineering mathematics application and some of his Symbolic Math Toolbox)

该程序包括注水功率分配算法，平均功率分配算法的仿真。生成的ser_snr曲线能很好的体现不同算法的效果。(The program includes injection power allocation algorithm, and the average power allocation algorithm simulation. The generated ser_snr curve can well reflect the effect of different algorithms.)

BP neural netowrk regression

watershed segmentation code

matlab switch lower(type) case uniform R=a+b*randn(M,N) case uniform R= a+(b - a)*rand(M,N( switch lower(type) case uniform R=a+b*randn(M,N) case uniform R= a+(b- a)*rand(M,N)

matlab建模，在数学建模竞赛中的应用(matlab modeling, mathematical modeling contest in the application)