def init_model(self):
"""Initializes two attributes of the model. Both attributes are
dataframes. The first attribute represents difficulties of countries.
The second attribute represents global knowledge of students.
"""
self.places = tools.keydefaultdict(Place)
self.users = tools.keydefaultdict(User)
self.predictions = {}
def init_model(self):
"""Initializes attribute of the model that stores current
knowledge of places for all students.
"""
self.items = tools.keydefaultdict(
lambda *args: Item(self.prior, *args)
)
self.predictions = {}
