“Sinovoice-2014-01-20”版本间的差异

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（以内容“=Project management= * Xiaoming and Xiao Na were added into the mail list * Potential Huawei conference-transcribing project was discussed =DNN training= ==Environme...”创建新页面）
 
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=Project management=
 
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* Xiaoming and Xiao Na were added into the mail list
 
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* Potential Huawei conference-transcribing project was discussed
 
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=DNN training=
 
=DNN training=
  
 
==Environment setting==
 
==Environment setting==
  
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* New disk space (3T) was created and mounted at /nfs/disk1
+
* Cluster accounts rearrangement
−
* Jobs with 100 threads work fine on the cluster
+
* Withdraw root/sudo previelege
 +
* Changed NFS server to 40 processes, hope to increase the disk reading speed
 +
* Create a RAID-0 with 3 or 4 3T disks
  
 
==Corpora==
 
==Corpora==
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* 60 hour data were cut this week
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* Change the data labeling strategy: do not label gender and the length of noise in the rest of the corpora.
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* Just send out to vendors for labeling
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* Automatic labeling
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* Waiting for out-source platform construction
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:* Xiaoming will work with Zhiyong to discover how to generate transcriptions with confidence score embedded.
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* We assume 60 hour data per week in future
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:* The first step is to investigate the raw accuracy on the domain-dependent test, and then decide the quality of automatic labeling
  
 
==470 hour 8k training==
 
==470 hour 8k training==
  
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* CE training done
+
* MPE training done
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* MPE training partially done
+
  
 
{| class="wikitable"
 
{| class="wikitable"
 
! Model !! CE !! MPE1!! MPE2 !! MPE3 !! MPE4
 
! Model !! CE !! MPE1!! MPE2 !! MPE3 !! MPE4
 
|-
 
|-
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|4k states||23.27/22.85 || 21.35/18.87 || 21.18/18.76 || 21.07/18.54
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|4k states ||23.27/22.85 || 21.35/18.87 || 21.18/18.76 || 21.07/18.54 || 20.93/18.32
 
|-
 
|-
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|8k states ||22.16/22.22 || - ||20.36/17.94 || - ||
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|8k states ||22.16/22.22 || 20.55/18.03 ||20.36/17.94 || 20.32/17.78 || 20.29/17.80
 
|-
 
|-
 
|}
 
|}
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==6000 hour 16k training==
 
==6000 hour 16k training==
  
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* Audio files ready. Files with incorrect sampling rates were removed
+
* Feature extraction done: solved three problems in the data: (1) short wave (2) unmatched file length (3) unmatched sample rate
−
* Lexicon and LM were ready
+
* Training goes to tri4b, quick increase of states/pdfs
−
* Making MFCC features
+
* DNN training could be started from Tuesday
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* Initial model (6 iterations etc) can be delivered before the spring holiday
+
  
 
=DNN Decoder=
 
=DNN Decoder=
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* Initial trail of DNN decoder based on the Sinovoice code was failed, largely due to FST compiler
+
 
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* Change the strategy to an integrated approach: use the sinovoice system to control connections, and use Kaldi base for asr engine
+
* Sinovoice decoder: some errors in FST building. Many triphones are lost after graph building. Problems in cdgen?
−
* Xiaoming will do some investigation on the Sinovoice FST compiler, while Liu Chao will focus on the Kaldi-based decoder
+
* Kaldi decoder:  
 +
:* A minor difference between CLG/HCLG results was find. Debugging into the problem.
 +
:* CLG RT is comparable to the HCLG RT, 0.3-0.4 in CSLT grid-2.
 +
:* Additional optimization on pdf-pre-computing will be investigated.
 +
:* Code deliver today.

2014年1月20日 (一) 07:43的版本

DNN training

Environment setting

  • Cluster accounts rearrangement
  • Withdraw root/sudo previelege
  • Changed NFS server to 40 processes, hope to increase the disk reading speed
  • Create a RAID-0 with 3 or 4 3T disks

Corpora

  • Change the data labeling strategy: do not label gender and the length of noise in the rest of the corpora.
  • Automatic labeling
  • Xiaoming will work with Zhiyong to discover how to generate transcriptions with confidence score embedded.
  • The first step is to investigate the raw accuracy on the domain-dependent test, and then decide the quality of automatic labeling

470 hour 8k training

  • MPE training done
Model CE MPE1 MPE2 MPE3 MPE4
4k states 23.27/22.85 21.35/18.87 21.18/18.76 21.07/18.54 20.93/18.32
8k states 22.16/22.22 20.55/18.03 20.36/17.94 20.32/17.78 20.29/17.80

6000 hour 16k training

  • Feature extraction done: solved three problems in the data: (1) short wave (2) unmatched file length (3) unmatched sample rate
  • Training goes to tri4b, quick increase of states/pdfs
  • DNN training could be started from Tuesday

DNN Decoder

  • Sinovoice decoder: some errors in FST building. Many triphones are lost after graph building. Problems in cdgen?
  • Kaldi decoder:
  • A minor difference between CLG/HCLG results was find. Debugging into the problem.
  • CLG RT is comparable to the HCLG RT, 0.3-0.4 in CSLT grid-2.
  • Additional optimization on pdf-pre-computing will be investigated.
  • Code deliver today.
取自“http://index.cslt.org/mediawiki/index.php?title=Sinovoice-2014-01-20&oldid=9105”