How does XGBoost algorithm work?

Related questions

1. What is Nthread in XGBoost?
2. Is Random Forest an ensemble method?
3. Is XGBoost tree based?
4. How does XGBoost work for classification?
5. Why is the decision forest better than the random forest?
6. Is Random Forest good for regression?
7. What is N_estimators in random forest?
8. What is the difference between GBM and XGBoost?

Tags

1. #regression
2. #approach
3. #descent
4. #models
5. #decision
6. #boosting
7. #predictive
8. #implements
9. #library
10. #adding
11. #gradient
12. #because
13. #algorithm
14. #classification
15. #called
16. #supports
17. #problems
18. #modeling
19. #xgboost
20. #minimize