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Fix comment in cross_validation.py (#1923)

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cv() doesn't output std_value because show_stdv is set to False.
This commit is contained in:
Muneyuki Noguchi 2017-01-02 23:40:41 +09:00 committed by Yuan (Terry) Tang
parent 7e07b2b93d
commit 8b827425b2
1 changed files with 1 additions and 2 deletions
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demo/guide-python/cross_validation.py
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@ -17,8 +17,7 @@ xgb.cv(param, dtrain, num_round, nfold=5,
print ('running cross validation, disable standard deviation display') print ('running cross validation, disable standard deviation display')
# do cross validation, this will print result out as # do cross validation, this will print result out as
# [iteration] metric_name:mean_value+std_value # [iteration] metric_name:mean_value
# std_value is standard deviation of the metric
res = xgb.cv(param, dtrain, num_boost_round=10, nfold=5, res = xgb.cv(param, dtrain, num_boost_round=10, nfold=5,
metrics={'error'}, seed = 0, metrics={'error'}, seed = 0,
callbacks=[xgb.callback.print_evaluation(show_stdv=False), callbacks=[xgb.callback.print_evaluation(show_stdv=False),