Classification and Regression Trees, Leo Breiman, Jerome Friedman, Richard A. Olshen, and Charles Stone, 1984 (Chapman and Hall/CRC)DOI: 10.1201/9781315139470 - A seminal text on decision tree algorithms, detailing methods for splitting, pruning, and complexity control of trees.
XGBoost: A Scalable Tree Boosting System, Tianqi Chen and Carlos Guestrin, 2016Proceedings of the 22nd ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (ACM)DOI: 10.1145/2939672.2939785 - Describes the XGBoost algorithm, covering regularization parameters like gamma and min_child_weight for tree complexity.
Parameters - LightGBM Documentation, Microsoft and LightGBM Contributors, 2024 - Official documentation detailing hyperparameters for LightGBM, including max_depth and num_leaves, and their impact on tree complexity.