In this example, what exactly do "Cluster" and "Sigma" mean? (They chose random coordinates for the three centroids of the groups)
- Centers: Cluster centers, returned as a
Jis the number of clusters and
Nis the number of data dimensions.
- Sigma: Range of influence of cluster centers for each data dimension, returned as an
N-element row vector. All cluster centers have the same set of sigma values.
Please, elaborate on the difference.