sanciyangtiao-sanwanju

How the K-mean Cluster work Step 1. Begin with a decision the value of k = number of clusters Step 2. Put any initial partition that classifies the data into k clusters. You may assign the training samples randomly, or systematically as the following: Take the first k training sample as single-element clusters Assign each of the remaining (N-k) training sample to the cluster with the nearest centroid. After each assignment, recomputed the centroid of the gaining cluster. Step 3 . Take each sample in sequence and compute its distance from the centroid of each of the clusters. If a sample is not currently in the cluster with the closest centroid, switch this sample to that cluster and update the centroid of the cluster gaining the new sample and the cluster losing the sample. Step 4 . Repeat step 3 until convergence is achieved, that is until a pass through the training sample causes no new assignments. (How the K-mean Cluster workStep 1. Begin with a decision the value of k = number of clusters Step 2. Put any initial partition that classifies the data into k clusters. You may assign the training samples randomly, or systematically as the following: Take the first k training sample as single-element clusters Assign each of the remaining (Nk) training sample to the cluster with the nearest centroid. After each assignment, recomputed the centroid of the gaining cluster. Step 3. Take each sample in sequence and compute its distance from the centroid of each of the clusters. If a sample is not currently in the cluster with the closest centroid, switch this sample to that cluster and update the centroid of the cluster gaining the new sample and the cluster losing the sample. Step 4. Repeat step 3 until convergence is achieved, that is until a pass through the training sample causes no new assignments.)

code for contrast stretching in matlab

solves Laplace equation for a specific B.C. in 2-D on a disk.

本文是关于无功补偿器的一种控制方法，是基于模型预测控制的，本文作者有两篇关于这个问题的论文，这一篇比较详细，可以作为了解statcom的预测控制的材料。(This article is about the kind of reactive power compensation control method is based on the model predictive control, the authors have two papers on the subject, this one in more detail, can be used as material to understand statcom predictive control.)

先进PID控制matlab仿真光盘的全套源程序，欢迎大家下载，谢谢(Advanced PID control matlab simulation CD-ROM full source code, are welcome to download, thank you.)

三相电压型 ＰＷ Ｍ 整流器，三相电压型 ＰＷ Ｍ 整流器，三相电压型 ＰＷ Ｍ 整流器(Three-phase voltage type PWM rectifie)

灰色模型的背景值和求导过程的联合优化，效果非常不错(Joint optimization model and gray background value derivation process, the effect is very good)

小波图像分解与合成(详细).在matlab环境中实现。(Wavelet image decomposition and composition (detailed). In the matlab environment to achieve.)

对信号进行预白化处理，使信号的后处理更加容易，故障更加清晰(Pre-whitening the signal so that the signal processing easier, more clear fault)

老师收集给我们的MATLAB编程教程，希望大家可以利用。(help you help me)