Xgboost Regression, Xgboost, Regression, Boosting, Ensemble Method.
Similarity Weight = 108 Similarity Weight of Right Node --------------------------------- Similarity Weight = (0 + 8 + 10)^2 / 3 + 1 λ = 1 = 324 / 3 + 1 = 81 // Compute the Similarity Weight of the Root Node, Similarity Weight = (-10 + -8 + 0 + 8 + 10)^2 / 5 + 1 = 0 // Calculate the Information