Mercedes time in testing prediction

[https://www.kaggle.com/c/mercedes-benz-greener-manufacturing][1] Predicting the time required to test different configurations of Mercedes-Benz cars, using a Gradient Boosted Trees Regressor with random sweep hyperparameter optimization. Best results, with 350 sweeps: R2 0.54870 in private leaderboard, 0.55416 in public. Top 37% [1]: https://www.kaggle.com/c/mercedes-benz-greener-manufacturing