(self, attributes, x, n_vals)
Return DistanceModel for computation of distances between columns.
        Derived classes must define this method.

        Args:
            attributes (list of Orange.data.Variable): list of attributes
            x (np.ndarray): data
            n_vals (np.ndarray): number of attribute values, 0 for continuous
Return DistanceModel for computation of distances between columns.
        Derived classes must define this method.
Return DistanceModel for computation of distances between columns . Derived classes must define this method .
def fit_cols(self, attributes, x, n_vals):
        """
        Return DistanceModel for computation of distances between columns.
        Derived classes must define this method.

        Args:
            attributes (list of Orange.data.Variable): list of attributes
            x (np.ndarray): data
            n_vals (np.ndarray): number of attribute values, 0 for continuous
        """
        raise NotImplementedError
def fit_cols ( self , attributes , x , n_vals ) : raise NotImplementedError