No windows available for training"

[hiandersson]

When I train models, especially TFT, I sometimes get this exception "No windows available for training" while optimising hyper parameters. I look in the code and its not super easy to tell what is going on ..

           # Protection of empty windows
            if final_condition.sum() == 0:
                raise Exception("No windows available for training")

Has it something to do with time series of a unique id being smaller than encoder length or is it related to something else?

[kdgutier]

Hi @hiandersson,

All the WindowsBased models (MLP, NBEATS, NHITS, TFT,...) use the create_windows method to train and predict.
https://github.com/Nixtla/neuralforecast/blob/main/neuralforecast/common/_base_windows.py#L178

You might want to limit the AutoTFT configuration space by limiting the input_size to match the length of your series.

[mak-rayate]

I'm encountering the same exception error repeatedly. @kdgutier, would you be able to provide a sample example? I've searched extensively through the documentation, but I couldn't find anything related to it.