What is the difference between tf.import_graph_def and tf.train.import_meta_graph

Question

When training in the model folder there are automatically saved metagraphic files.
So what is the difference between a graph and a metagraph.
If I want to load a model and draw a conclusion without plotting from scratch, is
tf.train.import_meta_grah okay?

Answer 1

Well, I find the answer from https://www.tensorflow.org/versions/r0.9/how_tos/meta_graph/index.html
as well as How to load multiple identical models from save files in one session in Tensorflow

: https://github.com/tensorflow/tensorflow/issues/4658