中文说明：应用背景在MATLAB 实现Kmeans算法；对MNIST ；数据集。该数据集包括1000个训练数据和测试数据点100。只有数字1，3，5，7是在当前数据 ；关键技术代码实现在MATLAB 4集群和工程的顺利进行。
English Description：
Application background Kmeans algorithm implemented in matlab for the MNIST data set. The data set consist of 1000 training data and 100 test data points. Only digits 1, 3, 5, 7 are present in the data. Key TechnologyThe code is implemeted in matlab for 4 clusters and works smoothly.