How to use SlidingWindowSplitter in sktime

Question

I need to fit ARIMA model from sktime package. I want to use SlidingWindowSplitter from sktime.forecasting.model_selection but I don really understand how it works. If I wanted to fit a simple ARIMA I would do this

...
model = ARIMA(order = (p, d, q)).fit(y_train)
y_pred, y_conf = model.predict(fh, return_pred_int=True)

But how that works with the SlidingWindowSplitter?

Answer 1

This should work:

from sktime.forecasting.all import *
from sktime.forecasting.model_evaluation import evaluate

y = load_airline()
forecaster = ARIMA()
cv = SlidingWindowSplitter()
out = evaluate(forecaster, cv, y)