These are the instructions to reproduce the TEDLIUM models described in
  "Purely sequence-trained neural networks for ASR based on lattice-free
  MMI", by Povey et al.
  
  First run:
  
  ./run.sh
  
  until the end of stage 7. (local/nnet/run_dnn.sh can be skipped.)
  
  Then run:
  
  local/chain/run_tdnn.sh
  
  to see results for a generic chain model. See the script's header
  comments to see other options, and their results.