Data dictionary
Assortment
CompetitionDistance
CompetitionOpenSince[Month/Year]
Customers
dataframes
mainstream task
Open
Promo
Promo2
Promo2Since[Year/Week]
PromoInterval
Sales
SchoolHoliday
StateHoliday
Store
StoreType
unique method
Data engineering
Boolean columns
categorical columns
data types
date-related features
date values
numeric feature
one-hot encoding
train, validation, and test