| ["day_of_week", "month", "quarter", "is_weekend", "week_of_year", "sin_day_of_week", "cos_day_of_week", "sin_month", "cos_month", "sin_day_of_year", "cos_day_of_year", "report_length", "report_word_count", "root_cause_length", "action_taken_length", "has_photos", "is_complaint", "text_complexity", "has_root_cause", "has_action_taken", "airline_encoded", "hub_encoded", "branch_encoded", "category_encoded", "area_encoded"] |