'rmse'
'mae'
'logloss'
'error' /
0.5 0.5
'error@t' 0.5 t
'merror' /
'mlogloss'
'auc' AUC
'ndcg' Normalized Discounted Cumulative Gain
'map' Mean average precision
'ndcg@n','map@n' n top
'ndcg-','map-','ndcg@n-','map@n-' NDCG and MAP will evaluate the score
of a list without any positive samples as 1. By adding “-” in the evaluation metric
XGBoost will evaluate these score as 0 to be consistent under some conditions.
training repeatedly
poisson-nloglik
gamma-nloglik
gamma-deviance
tweedie-nloglik tweedie
4. seed 0
1. external-memory in-memory
in-memory filename
external-memory filename#cacheprefix
filename libsvm
libsvm
cacheprefix cache xgboost
external memory cache