voxelselector.py 文件源码

def _cross_validation_for_one_voxel(clf, vid, num_folds, subject_data, labels):
    """Score classifier on data using cross validation."""
    # no shuffling in cv
    skf = model_selection.StratifiedKFold(n_splits=num_folds,
                                          shuffle=False)
    scores = model_selection.cross_val_score(clf, subject_data,
                                             y=labels,
                                             cv=skf, n_jobs=1)
    logger.debug(
        'cross validation for voxel %d is done' %
        vid
    )
    return (vid, scores.mean())