Fix discrepencies when xgboost trees are empty. #447
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Signed-off-by: xavier dupré <xavier.dupre@gmail.com>
Signed-off-by: xavier dupré <xavier.dupre@gmail.com>
wenbingl
approved these changes
Feb 19, 2021
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This bug usually happens for (binary) classification when the set is very small. xgboost returns trees with no leaf.