Data Field | Data Type | Definition |
user_id | integer | A unique id for the shopper |
gender | float | Gender of the shopper: 0 for female, 1 for male, 2 and NULL for unknown |
age_range | float | Age range of the shopper: 1 for less than 18, 2 for [18, 24], 3 for [25, 29], 4 for [30, 34], 5 for [35, 39]; 6 for [40, 49], 7 and 8 for more than 49, 0 and NULL for unknown |