./main.py --task=stack --stack_fraction_values_for_train=0.75
./main.py --task=stack --stack_fraction_values_for_train=0.75 --stack_nb_stacks=3
./main.py --task=stack --stack_fraction_values_for_train=0.75
./main.py --task=stack --stack_fraction_values_for_train=0.75 --stack_nb_stacks=3