Related to the training option 'SequenceLength = 'longest' of Long Short-Term Memory Neural Networks: Are the sequences padded with a specific value? (with which value)?

Related to the training option 'SequenceLength = 'longest' of Long Short-Term Memory Neural Networks:

Are the sequences padded with a specific value? (with which value)?

Doc: https://de.mathworks.com/help/deeplearning/ug/long-short-term-memory-networks.html

Padding Sequences

If you specify the sequence length "longest", the software will pad the sequences so that all sequences in a minibatch have the same length as the longest sequence in the minibatch. This option is the default setting.

[Christian Holz]

Found it:

SequencePaddingValue — Value to pad sequences