Chap_11

城市交通流的运行存在着高度的复杂性、时变性和随机性,实时准确的交通流预测是智能交通系统,特别是先进的交通管理系统与先进的出行者信息系统研究的关键. 基于交通流预测的特点,给出了基于遗传算法的小波神经 网络的交通预测模型GA-WNN ,用具有自然进化规律的遗传算法来对小波神经网络的连接权值和伸缩平移尺度进行前期优化训练,部分代替了小波框架神经网络中按单一梯度方向进行参数优化的梯度下降法,克服了单一梯度下降法易陷入局部极小和引起振荡效应等缺陷. 仿真实验验证了GA-WNN 预测模型对短时交通流的预测的有效性.(For the high complexity ,time-variation and probability of urban traffic flow , its real-time and exact prediction is critical to the research of intelligent traffic systems , especially for the advanced traffic manage-ment system and advanced traveler information system. Based on the character of the traffic flow prediction , a GA-WNN model is given based on the wavelet neural network with genetic algorithm. The genetic algorithm of natural evolving law for the gradient descendent algorithm in Wavelet Neural Network is partly substituted to pre-optimize the connection weight and the extension scale of the wavelet neural network and later optimize the parameters along a single gradient vector. This method overcomes some drawbacks when there exists a single gradient descendent algorithm , such as local minimum and oscillation. A short-time traffic flow prediction sim- ulation using the GA2WNN prediction model demonstrates the validity of the model .)

《自适应滤波器》第五章代码，很详细，值得推荐(Chapter adaptive filter code, very detailed)

KL距离的一种分类方法，此程序是分类启动子的类别，用MATLAB实现。(KLdistance with MATLAB.)

fft离散傅立叶变化，广泛应用数字信号处理中。(Discrete Fourier fft change, the wider use of digital signal processing.)

markov decision process (MDP) for Matlab

passion方程的第一类边界条件的数值解，边界条件过于复杂而无法求得解析解。这就需要借助于数值法来求电磁场的数值解。有限差分法便是一种比较容易的数值解法。(Numerical Solution of the first boundary condition passion equations and boundary conditions are too complex to be obtained by analytical solution. This requires the help of numerical methods to find numerical solution of electromagnetic fields. Finite difference method is a relatively easy numerical method.)

this document gives the information about fir filter in matlab..

使用matlab通过微弯波导和直波导耦合设计一个3db耦合器(Through the use of matlab Microbend waveguide and the straight waveguide coupled design a 3db coupler)

进行频域处理的必备程序，学信号的人一定要顶下(Essential for frequency domain processing procedures, the person must learn the signal under the top)

大气折射指数结构常数计算，方便快捷，使用性强(Calculation of atmospheric refraction index structure constant, convenient use and strong)