Adaptive-response-rate SES (Trigg & Leach)
The Adaptive-response-rate single exponential smoothing or the Trigg & Leach’s method, is also a hybrid of exponential smoothing but where α is calculated based upon the smoothed forecast error and smoothed absolute forecast error. Parameter is the smoothing constant applied to the trend in forecast versus demand.
Note: is
adaptive and calculated automatically. You only need to define the . defined on Dataset Properties is where the adaption
starts from, giving the formulas a change to get a better starting estimate for Alpha.
Applying additional trend is not common since this method already uses the trend smoothing constant to estimate how it adapts.
You can apply the seasonality when appropriate.