def input_fn(): return train_eval_input_fn(params, mode='eval')
def train_input_fn(): return train_eval_input_fn(params) estimator.train(
def train_input_fn(): return train_eval_input_fn(params)
def input_fn(): return train_eval_input_fn(params, mode='eval') if 'ner' not in problem and 'NER' not in problem: