smooth

smooth(matrix: any[] | Mat | Tensor, dim: number) : any[] | Mat | Tensor

param matrix - an Array, Mat or Tensor only supporting 2-D, to smooth the data of.

param dim either '0' or '1', '0' for rows, '1' for columns. Default is rows, dim=0.

returns: any[] | Mat | Tensor - a copy of the input with the elements smoothed.

This function smooths the data by the following method:

a[i] -> (a[i - 2] + a[i - 1] + a[i] + a[i + 1] + a[i + 2]) / 5

An example to make it clearer is shown below. It's useful for cases where the data is very noisy in large data sets, or where there are many outliers.

Overall it tries to make the data all "closer" together, or less eratic.