title: How to merge two models in tensorflow?
body: <p>I am working on face recognition using tensorflow.
  I have a graph that I am using to train two different model and each model have 10 classes.
  Now my question is, can I create a single model of 20 classes with the help of these two models.
  Please respond to this question. If you want more information, let me know.
  Thanks in advance.</p>