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updating docs for cv

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This commit is contained in:
Randy Carnevale 2015-12-16 17:21:23 -05:00
parent a3fe14d6c6
commit 0825ab36f0
1 changed files with 9 additions and 5 deletions
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14
python-package/xgboost/training.py
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@ -283,10 +283,14 @@ def mknfold(dall, nfold, param, seed, evals=(), fpreproc=None):
ret.append(CVPack(dtrain, dtest, plst)) ret.append(CVPack(dtrain, dtest, plst))
return ret return ret
def aggcv(rlist, show_stdv=True, show_progress=None, as_pandas=True, trial=None): def aggcv(rlist, show_stdv=True, show_progress=None, as_pandas=True, trial=0):
# pylint: disable=invalid-name # pylint: disable=invalid-name
""" """
Aggregate cross-validation results. Aggregate cross-validation results.
If show_progress is true, progress is displayed in every call. If
show_progress is an integer, progress will only be displayed every
`show_progress` trees, tracked via trial.
""" """
cvmap = {} cvmap = {}
idx = rlist[0].split()[0] idx = rlist[0].split()[0]
@ -320,8 +324,6 @@ def aggcv(rlist, show_stdv=True, show_progress=None, as_pandas=True, trial=None)
index.extend([k + '-mean', k + '-std']) index.extend([k + '-mean', k + '-std'])
results.extend([mean, std]) results.extend([mean, std])
if as_pandas: if as_pandas:
try: try:
import pandas as pd import pandas as pd
@ -376,9 +378,11 @@ def cv(params, dtrain, num_boost_round=10, nfold=3, metrics=(),
as_pandas : bool, default True as_pandas : bool, default True
Return pd.DataFrame when pandas is installed. Return pd.DataFrame when pandas is installed.
If False or pandas is not installed, return np.ndarray If False or pandas is not installed, return np.ndarray
show_progress : bool or None, default None show_progress : bool, int, or None, default None
Whether to display the progress. If None, progress will be displayed Whether to display the progress. If None, progress will be displayed
when np.ndarray is returned. when np.ndarray is returned. If True, progress will be displayed at
boosting stage. If an integer is given, progress will be displayed
is printed at every given `show_progress` boosting stage.
show_stdv : bool, default True show_stdv : bool, default True
Whether to display the standard deviation in progress. Whether to display the standard deviation in progress.
Results are not affected, and always contains std. Results are not affected, and always contains std.