Outputs predictions for the Aggregate algorithm on the in-sample data

        Parameters
        ----------
        h : int
            How many steps to run the aggregating algorithm on 

        Returns
        ----------
        - pd.DataFrame of ensemble predictions

def predict_is(self, h):
        """ Outputs predictions for the Aggregate algorithm on the in-sample data

        Parameters
        ----------
        h : int
            How many steps to run the aggregating algorithm on 

        Returns
        ----------
        - pd.DataFrame of ensemble predictions
        """
        result = pd.DataFrame([self.run(h=h)[2]]).T  
        result.index = self.index[-h:]
        return result