@palatej said that mean=true shouldn't be used.
Mean correction in a model containing high-differencing (>= 2) is really a bad idea: it generates forecasts that grow/decline extremely quickly (trend constant corresponding to a polynomial of degree >=2). In any case, if you have multiple periodicities, it should be disabled.
@palatej said that mean=true shouldn't be used. Mean correction in a model containing high-differencing (>= 2) is really a bad idea: it generates forecasts that grow/decline extremely quickly (trend constant corresponding to a polynomial of degree >=2). In any case, if you have multiple periodicities, it should be disabled.