Chinastark/bird_dataset huggingface dataset:
Column: event_id
Name: event id
Data format: integer
Description: the id of events
Column: app_id
Name: app id
Data format: integer
Description: the id of app users
Value description: each app_id represents for an user
Column: is_installed
Name: is installed
Data format: integer
Description: whether this app is installed or not
Value description:  0: no
 1: yes: installed
Column: is_active
Name: is active
Data format: integer
Description: whether this user is active or not