A simple combination of univariate models

摘要

This paper describes the approach that we implemented for producing the point forecasts and prediction intervals for our M4-competition submission. The proposed simple combination of univariate models (SCUM) is a median combination of the point forecasts and prediction intervals of four models, namely exponential smoothing, complex exponential smoothing, automatic autoregressive integrated moving average and dynamic optimised theta. Our submission performed very well in the M4-competition, being ranked 6th for the point forecasts (with a small difference compared to the 2nd submission) and prediction intervals and 2nd and 3rd for the point forecasts of the weekly and quarterly data respectively. (C) 2019 International Institute of Forecasters. Published by Elsevier B.V. All rights reserved.