This package is intended to speed up training of variable-length sequences in Keras by defining a Sequence object (dataset) that puts sequences of similar lengths in buckets.
The inputs of this class (found in bucketed_sequence.py) are the number of buckets (ranges are dynamically generated using a histogram), ideal minibatch size (sometimes smaller minibatches will be produced due to small bucket sizes), the sequences, output values, and their respective lengths.
A usage example can be found in test.py, which trains an LSTM to return the third value in a given sequence. If run with --buckets=0, the code will run normally, without the bucketed sequence.
License: New BSD (3-clause).