IS_reg_S default to Shapley when partners_count < 4 #303
Description
@bowni @Thomas-Galtier @arthurPignet
What would happen if we removed this threshold ?
https://github.com/SubstraFoundation/distributed-learning-contributivity/blob/808ee93c8593d3b226d3d1aeaa370c6d9d9689f8/mplc/contributivity.py#L452