title: Tensorflow Slim Imagenet training
body: <p>I am trying to prepare the date to train an ImageNet model from scratch and I am a bit confused about how the training works.</p>
  
  <p>While preparing the TF records I noticed this file inside the Inception model data directory: "imagenet_metadata.txt". The file holds labels for 21842 classes yet the training script and "imagenet_lsvrc_2015_synsets.txt" file only works for 1000 classes.</p>
  
  <p>I am wondering what modifications I need to do to train the model on the 21K classes not the 1K one?</p>