https://cuicaihao.github.io/tags/sales-prediction/Recent content in Sales Prediction on C.CUI's LogHugoen-AUSat, 17 Oct 2026 07:00:00 +1100https://cuicaihao.github.io/posts/2026-10-17-from-a-single-tree-to-a-forest-mathematical-principles-algorithmic-evolution-and-engineering-practices-of-tree-models/Sat, 17 Oct 2026 07:00:00 +1100https://cuicaihao.github.io/posts/2026-10-17-from-a-single-tree-to-a-forest-mathematical-principles-algorithmic-evolution-and-engineering-practices-of-tree-models/Starting with a single decision tree, this post explains CART, random forests, and GBDT, then compares how XGBoost, LightGBM, and CatBoost train, handle categorical features, and support evaluation and selection under real-world data problems.