arima_test

本程序是用matlab编写创建稀疏矩阵结构(This program is created using matlab sparse matrix structure)

Advanced Numerical Methods FTCS implicit

浙江大学授课用的ppt的pdf版，使用教材是姚俊，马松辉. 《Simulink建模与仿真》. 西安电子科技大学出版社(Zhejiang University lectures ppt pdf version of use, use of materials is Yao Jun, Ma Songhui. 《Simulink modeling and simulation》, Xidian University Press)

先归一化输入输出参数，用KMens优化RBF神经网络中心值，然后计算隐节点数据中心间的距离（矩阵），得到各隐节点的扩展常数（宽度），接着用最小二乘法得到各隐节点的输出权值，对数据进行反归一化，并绘图得到神经网络输出与测试集图，同时进行性能评价(First, the input and output parameters are normalized, the central value of the RBF neural network is optimized by KMens, then the distance (matrix) between the data centers of the hidden nodes is calculated, and the extended constant (width) of the hidden nodes is obtained. Then the output weights of the hidden nodes are obtained by the least square method, and the data are back normalized, and the neural network is drawn. Output and test set diagrams, and performance evaluation)

说明：  能实现第四代移动通信系统中的关键技术MIMO-OFDM，是一个两发两收的MIMO系统(To achieve the fourth generation mobile communication system in key technology MIMO-OFDM, is a collection of two rounds of two MIMO systems)

pca做特征降维，然后进行特征空间随机分割构造多个svm分类器，并行处理，对样本进行分类，基于特征空间的svm多分类器(using pca reduce feature dimension,split feature space and then randomly divided over svm classifier construction, parallel processing, the samples were classified, based on multi-feature space classification svm )

讨论了多变量灰色预测模型的算法，给出了多变量灰色预测模型的Matlab程序(Gray discussed the multivariate prediction model algorithm, given a number of variables in the Matlab program gray prediction model)

transfer function code(transfer function code in matlab)

This is the matlab source codes. It will generate the unit step sequnce and unit impulse sequence.

对光纤展宽以及光栅对压缩后脉冲形状的计算(Compressed analog fiber stretcher and grating, even if you can build a femtosecond structure)