mne.decoding.cross_val_multiscore¶
- mne.decoding.cross_val_multiscore(estimator, X, y=None, groups=None, scoring=None, cv=None, n_jobs=1, verbose=0, fit_params=None, pre_dispatch='2*n_jobs')[source]¶
Evaluate a score by cross-validation.
- Parameters
- estimatorinstance of
sklearn.base.BaseEstimator The object to use to fit the data. Must implement the ‘fit’ method.
- Xarray_like, shape (n_samples, n_dimensional_features,)
The data to fit. Can be, for example a list, or an array at least 2d.
- yarray_like, shape (n_samples, n_targets,)
The target variable to try to predict in the case of supervised learning.
- groupsarray_like, with shape (n_samples,)
Group labels for the samples used while splitting the dataset into train/test set.
- scoring
str,callable()|None A string (see model evaluation documentation) or a scorer callable object / function with signature
scorer(estimator, X, y). Note that when using an estimator which inherently returns multidimensional output - in particular, SlidingEstimator or GeneralizingEstimator - you should set the scorer there, not here.- cv
int, cross-validation generator | iterable Determines the cross-validation splitting strategy. Possible inputs for cv are:
None, to use the default 3-fold cross validation,
integer, to specify the number of folds in a
(Stratified)KFold,An object to be used as a cross-validation generator.
An iterable yielding train, test splits.
For integer/None inputs, if the estimator is a classifier and
yis either binary or multiclass,sklearn.model_selection.StratifiedKFoldis used. In all other cases,sklearn.model_selection.KFoldis used.- n_jobs
int The number of jobs to run in parallel (default
1). If-1, it is set to the number of CPU cores. Requires thejoblibpackage.- verbose
int, optional The verbosity level.
- fit_params
dict, optional Parameters to pass to the fit method of the estimator.
- pre_dispatch
int, orstr, optional Controls the number of jobs that get dispatched during parallel execution. Reducing this number can be useful to avoid an explosion of memory consumption when more jobs get dispatched than CPUs can process. This parameter can be:
None, in which case all the jobs are immediately created and spawned. Use this for lightweight and fast-running jobs, to avoid delays due to on-demand spawning of the jobs
An int, giving the exact number of total jobs that are spawned
A string, giving an expression as a function of n_jobs, as in ‘2*n_jobs’
- estimatorinstance of
- Returns
