Exploring XGBoost: A Deep Dive

XGBoost (Extreme Gradient Boosting) is an open-source library that implements gradient-boosted decision trees, an ensemble method that builds an additive sequence of trees where each new tree is fit to the gradient of the loss left by the ones before it. It supports regression, classification, ranking, and survival objectives behind a single training loop, and is implemented as a high-performance C++ core with CPU and CUDA/HIP backends, exposed through Python, R, and JVM bindings. On large tabular datasets it is a standard production choice for both accuracy and training throughput. This blog opens the box on how it works, end to end.