wsj/s5/steps/nnet3/chain2/train.sh: training no longer needs transition model

Author: Srikanth MADIKERI

egs/wsj/s5/steps/nnet3/chain2/train.sh

@@ -187,7 +187,7 @@ while [ $x -lt $num_iters ]; do
             --out-of-range-regularize=$out_of_range_regularize \
             $l2_regularize_opt \
             --print-interval=10  \
-           "nnet3-am-init $dir/0_trans.mdl $dir/${x}.raw - | nnet3-am-copy --learning-rate=$lrate - - |" $den_fst_dir \
+           "nnet3-copy --learning-rate=$lrate $dir/${x}.raw - |" $den_fst_dir \
            "ark:nnet3-chain-copy-egs $egs_opts scp:$egs_dir/${name}_subset.scp ark:- | nnet3-chain-merge-egs $multilingual_eg_opts --minibatch-size=1:64 ark:- ark:-|" \
            $dir/${next_x}_${name}.mdl || touch $dir/.error_diagnostic &
     done
@@ -218,7 +218,7 @@ while [ $x -lt $num_iters ]; do
              --l2-regularize-factor=$inv_num_jobs \
              $l2_regularize_opt \
              --srand=$srand \
-             "nnet3-am-init $dir/0_trans.mdl $dir/${x}.raw - | nnet3-am-copy --learning-rate=$lrate - - |" $den_fst_dir  \
+             "nnet3-copy --learning-rate=$lrate $dir/${x}.raw - |" $den_fst_dir \
              "ark:nnet3-chain-copy-egs $egs_opts --frame-shift=$frame_shift scp:$egs_dir/train.$scp_index.scp ark:- | nnet3-chain-shuffle-egs --buffer-size=$shuffle_buffer_size --srand=$x ark:- ark:- | nnet3-chain-merge-egs $multilingual_eg_opts --minibatch-size=$groups_per_minibatch ark:- ark:-|" \
              ${model_out_prefix}.$j.raw || touch $dir/.error &
   done