Affinity Propagation preferences initialization

Question

I need to perform clustering without knowing in advance the number of clusters. The number of cluster may be from 1 to 5, since I may find cases where all the samples belong to

Answer 1

You can control it by specifying the minimum preferences, but it's not sure that you will found a single cluster.

And also, I would suggest you to don't wanna make a single cluster because it would generate errors, as some data must not be the same or have similarity with examplers but as you provide the minimum preferences so the AP will commit the error.