Backpropagation through time

Question

Does anyone know of a library with a working implementation of backpropagation through time? Any of Java/Python/C#/VB.NET/F# (preferably the last one) will do!

Answer 1

Perhaps pybrain would do? The docstring for its BackpropTrainer class suggests that it does backpropagation through time:

class BackpropTrainer(Trainer):
    """Trainer that trains the parameters of a module according to a
    supervised dataset (potentially sequential) by backpropagating the errors
    (through time)."""