Realize matlab neural network can realize part of neural network algorithm

说明：  一个4阶的切比雪夫Ⅰ型低通滤波器，可以用它对信号进行滤波。当然，滤波器的零极点图也是必不可少的。(A 4-order Chebyshev low-pass filter of type Ⅰ, you can use it to filter the signal. Of course, the filter pole-zero map is essential.)

【转】协同过滤代码，用于推荐系统，包括基于项目和基于用户两种情况。实现基于用户和基于项目的协同过滤算法。 实验所用数据为MovieLens – a web-based movies recommender system with 43,000 users & over 3500 movies. 保存在ga.mat文件用，由于ga.test测试集过于庞大，全部用来计算的话耗时庞大，所以每次计算时随机选择部分，具体函数的使用请参照probar.m。我所得到的实验结果保存在results1-results8.mat里面。([Turn] collaborative filtering code for the recommended system, including project-based and user-based two cases. User-based and project-based collaborative filtering algorithm. Experimental data for MovieLens- a web-based movies recommender system with 43,000 users & over 3500 movies. Saved in ga.mat file with Because ga.test test set is too large, all used to calculate the time-consuming massive, so every time The calculated random selection portion, the use of the specific function, please refer to probar.m. I obtained experimental results are saved inside results1-results8.mat.)

应用背景利用有限元matlab计算轴的固有频率，可以快速的绘制振型，和ansys对比基本吻合。关键技术利用有限元，分别调用单元质量和刚度矩阵，然后组装矩阵，分别进行处理。

RFSim99 is a free linear S-parameter based circuit simulator offering schematic capture, simulation, 1 port and 2 port S-parameter display and file support, tolerance analysis, stability circles, and much more.

利用MATLAB语言实现二维信号多尺度离散小波分解(Using MATLAB language to achieve two-dimensional discrete wavelet multi-scale decomposition of signals)

These programs are used to calcualted a Duel phase lag model with different methods.

forward backward power flow for DSLF the codes are from matwork

程序是对输入的语音信号添加已知信噪比的噪声，输入是纯净的语音信号和信噪比，输出是加噪后的语音信号。后半部分是验证前面所加信噪比是否正确的程序(Procedure is to add the input speech signal noise ratio of the noise is known, the input speech signal and pure noise ratio, after output speech signal plus noise. Latter is to verify whether the previously added the correct procedure SNR)

中介真值程度度量，基于中介真值程度度量的图像分割利用最小二乘法进行拟合多元非线性方程，可以动态调节运行环境的参数。( The true extent of the value of the intermediary measure, measure the true extent of the agency based on the value of image segmentation Multivariate least squares fitting method of nonlinear equations, Can dynamically adjust the parameters of the operat)

matlab程序运行时导入数据文件作为输入参数，毕业设计有用，MIMO OFDM matlab仿真,主要为数据分析和统计，包含优化类的几个简单示例程序，是小学期课程设计的题目。