step3_build_episodes.py

"""
build support set for training/testing
1. diversity
2. more items

1. support set: we should give more diversity
2. query set:  we should set a hyper paramseters, not one by one

check how to construct the data.

-------------------------------------

hierarchical setting:
1. single task
2. batch of task
3. iteratoin
"""

# select target items
dict_Pair2ItemList = None