2nd place solution for Airbnb New User Bookings Competition.
Note: This code should be differ from my submitted solution(Public:0.88209/Private:0.88682) because of the seed settings. if you select a model of more than 5 fold-CV 0.833600, you can get about 0.88682(Private).
Please see Airbnb New User Bookings, Winner’s Interview: 2nd place, Keiichi Kuroyanagi (@Keiku) | no free hunch
Please edit run.R and execute run.R.