Hybrid strategies
The three strategies we have already covered are the three basic strategies for multi-step forecasting, each with its own merits and demerits. Over the years, researchers have tried to combine these as hybrid strategies that try to capture the good parts of each strategy. Let’s go through a few of them here. This is not a comprehensive list because there is none. Anyone with enough creativity can come up with alternate strategies, but we will just cover a few that have received some attention and deep study from the forecasting community.
DirRec strategy
As the name suggests, the DirRec strategy is a combination of direct and recursive strategies for multi-step forecasting. One of the disadvantages of the direct method is that it forecasts each timestep independently and, therefore, loses out on some context when predicting far into the future. To rectify this shortcoming, we combine the direct and recursive methods by using the forecast generated...