add ctc conf

doc/src/deepspeech_architecture.md

@@ -183,5 +183,3 @@ bash run.sh --stage 0 --stop_stage 2 --model_type offline --conf_path conf/deeps
 cd examples/aishell/s0
 bash run.sh --stage 3 --stop_stage 5 --model_type offline --conf_path conf/deepspeech2.yaml
 ```
-
-

examples/librispeech/s1/conf/transformer.yaml

@@ -33,7 +33,7 @@ collator:
   keep_transcription_text: False
   sortagrad: True 
   shuffle_method: batch_shuffle
-  num_workers: 2
+  num_workers: 0
 
 
 # network architecture
@@ -67,6 +67,8 @@ model:
     # hybrid CTC/attention
     model_conf:
         ctc_weight: 0.3
+        ctc_dropoutrate: 0.0
+        ctc_grad_norm_type: instance
         lsm_weight: 0.1     # label smoothing option
         length_normalized_loss: false