Figure 6

Evaluation metrics and features importance. Sample size 1,398,845. XGBoost trees 500. MAE (km/h 1.39). Feature importance Event_country_ID 0.66, Athlete_gender_ID 0.23, Age_group_ID 0.07, Athlete_country_ID 0.05.

Evaluation metrics and features importance. Sample size 1,398,845. XGBoost trees 500. MAE (km/h 1.39). Feature importance Event_country_ID 0.66, Athlete_gender_ID 0.23, Age_group_ID 0.07, Athlete_country_ID 0.05.