(self, pianoroll)
Evaluate a single pianoroll.

    Args:
      pianoroll: a single pianoroll, shaped (tt, pp, ii)

    Returns:
      unit losses
Evaluate a single pianoroll.
Evaluate a single pianoroll .
def __call__(self, pianoroll):
    """Evaluate a single pianoroll.

    Args:
      pianoroll: a single pianoroll, shaped (tt, pp, ii)

    Returns:
      unit losses
    """
    raise NotImplementedError()
def __call__ ( self , pianoroll ) : raise NotImplementedError ( )