9.3.Parzen窗 Region R to be a small hypercube centered on the point x at which we wish to determine the probability density.In order to count the number K of points falling within this region,we define the following function: k(0= 1,lwl≤1/2，i=1,,D, 0,otherwise where D is the dimension of the regin R. ok(u)is an example of a kernel function,also called a Parzen window,represents a unit cube centered at the origin. 11/279.3. Parzen 窗 Region R to be a small hypercube centered on the point x at which we wish to determine the probability density. In order to count the number K of points falling within this region, we define the following function: k(u) = { 1, |ui | ≤ 1/2, i = 1, ..., D, 0, otherwise where D is the dimension of the regin R. k(u) is an example of a kernel function, also called a Parzen window, represents a unit cube centered at the origin. 11 / 27