Unmasking the Theta method
journal contributionposted on 07.06.2017 by Hyndman, Rob J., Billah, Baki
Any type of content formally published in an academic journal, usually following a peer-review process.
The "Theta method" of forecasting performed particularly well in the M3-competition and is therefore of interest to forecast practitioners. The description of the method given by Assimakopoulos and Nikolopoulos (2000) involves several pages of algebraic manipulation and is difficult to comprehend. We show that the method can be expressed much more simply; furthermore we show that the forecasts obtained are equivalent to simple exponential smoothing with drift.