(self, labels, logits)
return eval_hooks, eval_metric_ops
return eval_hooks, eval_metric_ops
return eval_hooks eval_metric_ops
def get_eval_hooks(self, labels, logits):
    ''' return eval_hooks, eval_metric_ops '''
    raise NotImplementedError()
def get_eval_hooks ( self , labels , logits ) : raise NotImplementedError ( )