Frist, run the preProcess.csv, make sure have ../inputs/train_users_2.csv and ../inputs/sessions.csv these two download from https://www.kaggle.com/c/airbnb-recruiting-new-user-bookings/data
Secondly, run a modelTrain ov or cv or other, many can work! Third, use the bagging to merge many outputs of the second step, if you do good, you can get the top 50 in kaggle!