def _alpha(self, L):
        """ Covariance-derived term to construct expectations. See Rasmussen & Williams.
        
        Parameters
        ----------
        L : np.ndarray
            Cholesky triangular

        Returns
        ----------
        np.ndarray (alpha)
        """     
        return la.cho_solve((L.T, True), la.cho_solve((L, True), np.transpose(self.data)))
def _alpha ( self , L ) : return la . cho_solve ( ( L . T , True ) , la . cho_solve ( ( L , True ) , np . transpose ( self . data ) ) )
Covariance-derived term to construct expectations. See Rasmussen & Williams.
        
        Parameters
        ----------
        L : np.ndarray
            Cholesky triangular

        Returns
        ----------
        np.ndarray (alpha)