awslabs/gluonts

`lagged_sequence_values` helper does not work well with multivariate data

Aperta

#2708 aperta il 6 mar 2023

 (7 commenti) (0 reazioni) (0 assegnatari)Python (753 fork)batch import
enhancementgood first issuemultivariate

Metriche repository

Star
 (3888 stelle)
Metriche merge PR
 (Merge medio 26g 17h) (4 PR mergiate in 30 g)

Descrizione

one issue i found with the lagged_sequence_values helper is that with multivariate inputs this helper doesn't return the stacked tensors... e.g.

# prior_input.shape torch.Size([1, 167, 137])
# input.shape torch.Size([1, 24, 137])

lags = lagged_sequence_values([0, 167], prior_input, input, dim=1)
# lags.shape torch.Size([1, 24, 137, 2])

where i would have expected torch.Size([1, 24, 137*2])

Originally posted by @kashif in https://github.com/awslabs/gluonts/issues/2618#issuecomment-1455833300

Guida contributor