Model trained by neurst did not save metadata

[ghtwht]

Why model trained by neurst just save the ckpt-.data-00000-of-00001 and ckpt-.index wiithout the *.meta file and *.pbtxt file? How can I fix this?
Thanks~

[zhaocq-nlp]

By default, NeurST only saves and restores the weights, i.e. checkpoints of the model. To save with the model structure, you can use export by tf.keras.models.save_model (https://github.com/bytedance/neurst/blob/master/neurst/exps/sequence_generator_savedmodel.py#L64).

An example:

python3 -m neurst.cli.run_exp --entry SequenceGeneratorSavedmodel --model_dir checkpoint_path/ --search_method beam_search  --beam_size 4 --maximum_decode_length X --padded_decode ...... --export_path saved_model_path/