sklearn.utils.multiclass
.unique_labels¶
-
sklearn.utils.multiclass.
unique_labels
(*ys)[source]¶ Extract an ordered array of unique labels
- We don’t allow:
- mix of multilabel and multiclass (single label) targets
- mix of label indicator matrix and anything else, because there are no explicit labels)
- mix of label indicator matrices of different sizes
- mix of string and integer labels
At the moment, we also don’t allow “multiclass-multioutput” input type.
Parameters: - *ys : array-likes
Returns: - out : numpy array of shape [n_unique_labels]
An ordered array of unique labels.
Examples
>>> from sklearn.utils.multiclass import unique_labels >>> unique_labels([3, 5, 5, 5, 7, 7]) array([3, 5, 7]) >>> unique_labels([1, 2, 3, 4], [2, 2, 3, 4]) array([1, 2, 3, 4]) >>> unique_labels([1, 2, 10], [5, 11]) array([ 1, 2, 5, 10, 11])