1. CALO Decoder Progress Report for April/May
Arthur (Decoder and ICSI Training)
Jahanzeb (Decoder)
Yitao (Decoder)
Ziad (ICSI Training)
Moss (ICSI Training)
Carnegie Mellon University
Apr 13, 2004

2. This Presentation (5 pages)
Progress report for April/May
In March
Sphinx 3.4 is not ready
Just start the script conversion for training
In April/May
Sphinx 3.4 is ready for release
First-cut of AM and LM is done. (Thanks for Rita!)

3. Decoder Speed Accuracy Outlook in next 3 months (in 3.5)
Compiler Optimization
Doesn’t beat loop-unrolling
However not using –D and using –ffast-math helps
Phoneme-lookahead completes
Accuracy
Train a continuous HMM using all Communicator data. (S2 17% -> S3.4 14%)
64 mixtures will give us 12% ERR.
Speed not-tuned.
Outlook in next 3 months (in 3.5)
WSJ: potential speed-up problem in task with > 5000 words.
Speaker Adaptation: VTLN, MLLR, and techniques for fast enrollment
Front-end transformation : LDA, HLDA, ……
Model Combination experiment.

4. Decoder (Software) Release this week Not included (will be in 3.5)
Mainly to replace buggy s3.3
Not included (will be in 3.5)
Live mode APIs (Yitao , 80% completion)
Outlook in next 3 months.
Can learn from AHTK 1.3
Access of the models’ parameters?
Server interface?
Confidence measures?

5. ICSI Training Moss –LM training (done)
Arthur/Ziad – 1 meeting training (done)
Rita (Thanks!) – all meetings training (done)
Current results (16 mixture, LM train for in-domain meeting) – 36.4%
Different from the standard test set.
Outlook in next 3 months
Learn the magic from Rita,
Wrap-up training script with perl.
(Optional) Find a better test set.
Start to improve the performance.
With speaker adaptation technology.
Class-based LM
PLP

6. Infrastructure/Miscellaneous
CVS is setup for
MRCP
ICSI conversion script
Sphinx (will move back to Sourceforge.)
Development is transitioning.
Check-in training scripts?
Scylla and Karybdis are running
On a separate queue.
Documentation for Sphinx.
3rd draft of outline completed. (9 chapters left.)
…… ()
Outlook in next 3 months,
Continue to maintain CVS. User education.
Complete the 2nd draft of the documentation.

7. Outlook in next 3 months. Incorporate transform-based technology
Speed-up for task > 5k words.
Further improve ICSI training by all resources
Transition development to CVS.