def value(self):
        """
        Covariance matrix.

        Returns
        -------
        K : ndarray
            Matrix K = LLᵀ + ϵI, for a very small positive number ϵ.
        """
        K = dot(self.L, self.L.T)
        return K + self._epsilon * eye(K.shape[0])
def value(self):
        """
        Covariance matrix.

        Returns
        -------
        K : ndarray
            Matrix K = LLᵀ + ϵI, for a very small positive number ϵ.
        """
        K = dot(self.L, self.L.T)
        return K + self._epsilon * eye(K.shape[0])
def value ( self ) : K = dot ( self . L , self . L . T ) return K + self . _epsilon * eye ( K . shape [ 0 ] )
Covariance matrix.

        Returns
        -------
        K : ndarray
            Matrix K = LLᵀ + ϵI, for a very small positive number ϵ.
Covariance matrix .