Utilities.py 文件源码

def getClasses(labels):
        """
        Get unique values from a column of labels.

        Parameters
        ----------
        labels: array-like of shape = [number_samples] or [number_samples, number_outputs]
            The target values (class labels in classification).

        Return
        ----------
        classes: ndarray
            The sorted unique labels

        ids: ndarray
            The indices of the first occurrences of the unique values in the original array.
        """
        uniques, ids = numpy.unique(labels, return_inverse=True)
        return uniques, ids