data_key = "-".join([task_name_version, data_type, str(least_num), train_or_val])
data_key = "-".join([task_name_version, data_type, str(least_num), train_or_val])
output: 'HalfCheetah-v3-low-100-train'
from: offlinerl/neorl
data_key = "-".join([task_name_version, data_type, str(least_num), train_or_val])
output: 'HalfCheetah-v3-low-100-train'
from: offlinerl/neorl