translate.py 文件源码

def create_model(session, forward_only):
  """Create translation model and initialize or load parameters in session."""
  dtype = tf.float16 if FLAGS.use_fp16 else tf.float32
  model = seq2seq_model.Seq2SeqModel(
      FLAGS.from_vocab_size,
      FLAGS.to_vocab_size,
      _buckets,
      FLAGS.size,
      FLAGS.num_layers,
      FLAGS.max_gradient_norm,
      FLAGS.batch_size,
      FLAGS.learning_rate,
      FLAGS.learning_rate_decay_factor,
      forward_only=forward_only,
      dtype=dtype)
  ckpt = tf.train.get_checkpoint_state(FLAGS.train_dir)
  if ckpt and tf.train.checkpoint_exists(ckpt.model_checkpoint_path):
    print("Reading model parameters from %s" % ckpt.model_checkpoint_path)
    model.saver.restore(session, ckpt.model_checkpoint_path)
  else:
    print("Created model with fresh parameters.")
    session.run(tf.global_variables_initializer())
  return model