2013-11-29

AM development

Sparse DNN

• Optimal Brain Damage(OBD).

1. Online OBD held.
2. OBD + L1 norm start to investigation.

Engine optimization

• Constant FST Applied. Original RT (GCC + vector FST): 0.35. Optimized (GCC+const FST + cache): 0.29
• Start to investigate LOUDS FST.
• Investigate spare computing

English NN training

• WSJ+Chinglish data training, done
• 300 English song graph. Looks fine.
• Preparing test.

LM development

NN LM

• 3 iteration 500 M training done. 24 hours per iteration.
• PPL 189 after 3 iterations.
• NN-based CSLM merge done (10240*100*10240). The PPL and WER are both worse than the original 10 network outputs.
• Need to investigate why the merge is not accurate.

Embedded development

• Embedded stream mode on progress.

Speech QA

• Designed a QA recording client on mobiles.
• 15 persons recording done, 199 utterances per people.
• Ready to do recognition.