中文说明：最小均方误差（MMSE）的算法，调试通过可以使用，通过反复训练模板能有较高的识别率，数学方法是部分子空间法，代码里有很完整的注释和解释，虚拟力的无线传感网络覆盖。
English Description：
The algorithm of minimum mean square error (MMSE) can be used after debugging. Through repeated training, the template can have a higher recognition rate. The mathematical method is partial subspace method. There are very complete notes and explanations in the code, and the virtual force wireless sensor network coverage.