数据平滑函数，已经测试过了，采用高斯核函数方法，很好用 -Data smoothing function, it has been tested using Gaussian kernel function method, easy to use

数据平滑函数，在高斯核函数的基础上进行的方法改进，-Data smoothing function, a method based on the Gaussian kernel function were improved,

we present a nonlinear version of the well-known anomaly detection method referred to as the RX-algorithm. Extending this algorithm to a feature space associated with the original input space via a certain nonlinear mapping function can provi