中文说明：K近邻分类器，用于模式识别等领域，该程序短小精悍，适合与ANN和SVM进行比较研究，本人多篇论文用到，效果较好。
English Description：
K-nearest neighbor classifier, used in pattern recognition and other fields, the program is short and concise, suitable for comparative study with ANN and SVM, I used many papers, the effect is good.