Prob_3_2

采用BP网络进行分类，对某一设备故障进行分类，一共三类，可以运行(using BP nerual network to classify the operation of a device)

说明：  是自适应滤波的一个源代码，用matlab编写，可以直接复制进行运行(Adaptive filtering is a source code, matlab written copy can be run)

"Space-Time Codes and MIMO Systems"是Mohinder Jankiraman 所著的经典之作，这里给出全书的matlabe源码。 电子版书籍另外给出。 ("Space-Time Codes and MIMO Systems" is Mohi nder Jankiraman author of classic works, here is the book matlabe source. Electronic version of books is another.)

duffing方程的混沌判别中使用到了庞加莱截面，即多维相空间中适当选取一截面 ，此截面不与轨线相切，不包含轨线，且便于观察系统的运动特征变化.(use Poincare chaotic duffing equation discriminant, multi-dimensional phase space appropriate to select a cross-section, this section is not tangent to the trajectory does not contain the rail line, and easy motion characteristics of the observed system changes.)

This code is used for calculate the laplacian mean square error

C++TEST操作指南、中文介绍、运行时错误检测技术分析和比较、内存错误检测技术理论与实践(C++ TEST instructions, the Chinese introduced run-time error detection technology analysis and comparison, memory error detection technology theory and practice)

基于 DCT(离散余弦变换 )域的信息隐藏算法是目前应用最广的变换域算法 ,此类算法的最大不足是嵌信息量小。通过分析 DCT域隐藏算法隐藏容量少的原因 ,提出了一种大容量的 DCT域信息隐藏算法。算法首先对载体图像进行频谱均匀化处理 ,然后对图像进行全局 DCT变换 ,并将隐藏信息嵌入到载体图像的低频 DCT系数上 ,信息嵌入采用分段量化的方法实现 ,提取隐藏信息时不需要原始载体图像。实验结果表明 ,该算法的嵌入容量大 ,不可感知性好。(Based on DCT (discrete cosine transform) domain information hiding algorithm is the most widely used transform domain algorithms, the largest of these algorithms is the lack of a small amount of information embedded. Hiding Algorithm for DCT domain by analyzing the hidden reasons for the low capacity, a large capacity of information hiding algorithm for DCT domain. Firstly, the spectrum of the carrier image homogenization, and then the image is a global DCT transformation, and hidden information embedded into the image of the low-frequency DCT coefficients, the information embedded in the methods used to achieve sub-quantization, extract hidden information without the original Vector image. Experimental results show that the algorithm embedding capacity, can not be perceived good.)

algorithm for moment invariants.

pls在化学数据分析中的应用举例，是很好的化学计量学小程序(pls in chemical data analysis example, is a good small program Chemometrics)

粒子群优化算法的一个寻优案例,测试函数含有多个局部极值，尝试用PSO算法寻找全局极值(a case of Particle Swarm Optimization algorithm.)