Research Article

Analyzing Accident Injury Severity via an Extreme Gradient Boosting (XGBoost) Model

Table 8

The candidate values of four parameters for grid search algorithm.

ParameterNumber of estimatorsLearning rateMaximum depth

Value5, 8, 10, 20, 300.01, 0.02, 0.05, 0.1, 0.23, 4, 5, 6, 7, 8, 9, 101, 2, 3, 4, 5