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PCA技术的一大好处是对数据进行降维的处理。我们可以对新求出的“主元”向量的重要性进行排序，根据需要取前面最重要的部分，将后面的维数省去，可以达到降维从而简化模型或是对数据进行压缩的效果。同时最大程度的保持了原有数据的信息。 (A major advantage of PCA technology is reduce the dimension of the data processing. We can calculate the new " principal component" vector order of importance, according to need to take the most important part of the front, eliminating the rear of the dimensions, dimension reduction can be achieved to simplify the model or the effect of data compression . At the same time maintaining the greatest degree of the original data.)

This GUI will show normal,Rayleigh and rice distribution with the law of large number. It has an easy to understand interface and few parameters.

a code that converts decimal to bcd

自己编写的55行精短情诗代码，呈现红色背景、白窗心形图案及动态U型符号，释义“Need you !”，码农也能文艺！(55 lines fine short poems codes, showing heart-shaped background and dynamic symbol-U,meaning "Need you!")

高斯消元的一个例子。。应用于数值分析算法。希望能帮到大家。(gauss)

灰色理論下之灰關聯matlab源碼，可幫助計算一序列中的數據的權重，得以給予不同之相關性(gray theory under gray relational Matlab source that could help the calculation of a sequence of data weights, given to the relationship between different)

MATLAB最好的中文教程，非常适合初学者(The best Chinese MATLAB Tutorial)

信号由三个频率分别为0.01，0.1，0.2的正弦信号组成。 (1)作信号的连续小波变换。 (2)自己选择小波基数，对信号进行多尺度分解，将每一个正弦信号分开。 (3)重建原信号。 (Signal from the three frequencies were 0.01,0.1,0.2 sinusoidal signals. (1) continuous wavelet transform for signal. (2) choose the wavelet base, multi-scale decomposition of signals, a sinusoidal signal of each separate. (3) reconstruction of the original signal.)

MATLAB编程基础word版的教程，讲的很好！(Basic word version of MATLAB programming tutorial, pretty well!)

一个带案例对比的S-G滤波,红色为处理结果，绿色为无噪信号，蓝色为含噪信号(A S-G filter with case comparison)