Parzen窗估计法是一种非参数函数估计方法，它能够较好地描述多维数据的分布状态。其基本思想就是利用一定范围内各点密度的平均值对总体密度函数进行估计。-Parzen window estimation method is a nonparametric function estimation method, which can describe the distribution of multi-dimensional data. The basic idea is to use the average value of each point density within a certain range of the overall density function estimation.