'Initialize a MultipleEventSequenceEncoder object.
Args:
encoders: A list of component EventSequenceEncoderDecoder objects whose
output will be concatenated.
encode_single_sequence: If True, at encoding time all of the encoders will
be applied to a single event sequence. If False, each event of the
event sequence should be a tuple with size the same as the number of
encoders, each of which will be applied to the events in the
corresponding position in the tuple, i.e. the first encoder will be
applied to the first element of each event tuple, the second encoder
will be applied to the second element, etc.'

def __init__(self, encoders, encode_single_sequence=False):

    self._encoders = encoders
    self._encode_single_sequence = encode_single_sequence
