Cluster-analysis

说明：  Horn and shunck code to estimate the motion between two consecutive frames

孙志忠书：偏微分方程数值解，第三章第一节：抛物方程的有限差分解法向前欧拉格式(forward euler difference scheme for parabolic problem)

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 .)

it s a new spectrogram design

模糊PID控制源程序.采样时间为1ms,在第300个采样时间时控制器输出加1.0的干扰.(Fuzzy PID control of the source code. Sampling time of 1ms, at No. 300 when the controller output sampling time add 1.0 interference.)

turbo code simulation in matlab

现今社会网络越来越普及，网购已成为一种常见的消费方式，随之物流行业也渐渐兴盛，每个送货员需要以最快的速度及时将货物送达，而且他们往往一人送多个地方，请设计方案使其耗时最少。 这是数学建模是非常有意思的一个题，本程序用哈密尔顿算法计算(Today more and more popular social networks, online shopping has become a common way of consumption, with the attendant logistics industry has gradually flourished, each delivery person needs to be the fastest speed in time of goods delivery, and they sent the more often a a place, please design it for at least time-consuming. This is the mathematical modeling is a very interesting question, the program algorithm with the Hamilton)

EXIT图，外信息转移图，对做迭代分析的非常有帮助。(EXIT chart, extrinsic information transfer chart, right to do iterative analysis very helpful.)

DV-hop与min-max相结合，使得计算量更小，在最后对结果求精，定位精度更高。(DV- hop combined with min- Max, makes a smaller amount of calculation, at the end of the refinement, positioning accuracy is higher. )

说明：  基于前馈补偿的PID控制算法，使用m文件编写，很简单的例子(PID control algorithm based on feedforward compensation)