predict new waveforms using multivar fit

def predict(self,param_dict):
        """ predict new waveforms using multivar fit """
        encoder_dict = self._designmatrix_object.encoder
        X, col_names = self._designmatrix_object.run_encoder(param_dict, encoder_dict)
        # compute predictions
        Y_pred = self._compute_prediction(X)
        return Y_pred