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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.)

This matlab m-file is a programing file of Pure ALOHA. This file considers

Hamming窗加权非线性调频脉冲压缩程序(Hamming window weighted linear FM pulse compression process)

This file includes the source code of the Uncoded+Coded QPSK with Viterbi (Term & hard decision) decoder.

matlab simuling 太阳能光伏阵列最大功率点跟踪仿真，mppf(matlab simuling maximum power point tracking photovoltaic array simulation, mppf)

一款RS缩短码的源代码，可修改其中主程序的数据变任意一种RS码的编码器，此程序经多次验证均正确，且采用标准代码格式描写，易读。(A shortened RS code source code, which can modify data in the main program code change any of the RS encoder, this procedure has been repeatedly verified are correct, and the use of standard code format description, easy to read.)

说明：  OFDM的系统仿真，使用TCM编码，维特比译码。可以绘出多径延时状态下的不同信噪比的误码曲线(OFDM system simulation, the use of TCM coding, Viterbi decoding. Multipath delay can be drawn under the error curves of different signal to noise ratio)

two link pendulum matlab simulation

说明：  利用matlab寫的 level set 去雜訊(Use of matlab write to the noise level set)

说明：  一个相当不错的二维人物动画代码，大家可以学习学习。(a very good 2-D character animation code, we can learn from him.)