Mathematical Problems in Engineering / 2019 / Article / Alg 3

Research Article

Towards Optimization of Boosting Models for Formation Lithology Identification

Algorithm 3

XGBoost algorithm, modified from [23].
(1)Given . The number of iterations: M
(2)Initialize
(3)For to M:(a)Compute , and (b)Fit base model , .(c)Determine the leaf weight for the learnt structure with and (d)Update current model with previous model and the constrained ,
(4)Calculate the final boosting model .

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