Dimitris Athanasiou 54d3cc74ec
[7.x][ML] Ensure class is represented when its cardinality is low (#56783) (#56829)
In DF analytics classification, it is possible to use no samples
of a class if its cardinality is too low.

This commit fixes this by ensuring the target sample count can never be zero.

Backport of #56783
2020-05-15 20:52:06 +03:00
..