ETS experiments

Main results

dataset	metric	ets_statsforecast	ets_r	ets_statsmodels[1]
Hourly	MASE	1.61	1.82	21848.5
Hourly	time	18.79	35.45	112.35
Daily	MASE	3.23	3.25	325.42
Daily	time	26.24	17.78	19.97
Weekly	MASE	2.55	2.53	2.68
Weekly	time	1.78	2.12	1.56
Monthly	MASE	0.97	0.95	3.75016e+07
Monthly	time	512.7	907.23	2285.11
Quarterly	MASE	1.17	1.16	9.01169e+07
Quarterly	time	88.48	75.78	280.89
Yearly	MASE	3.09	3.44	101.64
Yearly	time	6.73	15.38	34.35
[1] The model `ETSModel` from `statsmodels` had performance problems for particular series. An issue was opened and answered.

To reproduce the main results you have:

Execute conda env create -f environment.yml.
Activate the environment using conda activate ets.
Run the experiments using python -m src.[model] --dataset M4 --group [group] where [model] can be statsforecast, and [group] can be Daily, Hourly and Weekly.
To run R experiments you have to prepare the data using python -m src.data --dataset M4 --group [group] for each [group]. Once it is done, just run Rscript src/ets_r.R [group].
Finally you can evaluate the forecasts using python -m src.evaluation.