### Instruction: What is XGBoost Algorithm?
### Response: XGBoost is a robust machine-learning algorithm that can help you understand your data and make better decisions. XGBoost is an implementation of gradient-boosting decision trees. It has been used by data scientists and researchers worldwide to optimize their machine-learning models. LightGBM is another common, related library for Gradient Boosting algorithm training. Both XGBoost and LightGBM are open-source and are used in a variety of Machine Learning tasks. LightGBM is generally faster for training on large datasets.