Bad accuracy in SPHINX-3 preliminary decode

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User: Yann
Date: 2/6/2009 12:56 pm

Views: 4704
Rating: 5

Hi!

I downloaded sphinx3 (nightly build) , SphinxTrain (nightly build) and an4 (an4_raw.bigendian.tar) and installed all the stuff, following step by step the "Robust Group Tutorial", on an iMac.

I had to do 2 modifications for the process to succeed.

1- modify an4/etc/sphinx_train.cfg: 'sph' and 'nist' changed in 'raw'

2- create a .libs directory under an4/bin/ and put in: sphinx3/build/bin/sphinx3_decode

Finally, after running scripts_pl/decode/slave.pl, I get the following results:

This step had 6 ERROR messages and 2 WARNING messages. Please check the log file for details.

Aligning results to find error rate

SENTENCE ERROR: 96.9% (125/130) WORD ERROR RATE: 95.2% (735/773)

Could anyone explain to me why these results are so poor ?

Thanks in advance.

Yann

--- (Edited on 2/6/2009 12:56 pm [GMT-0600] by Yann) ---

Re: Bad accuracy in SPHINX-3 preliminary decode

User: nsh
Date: 2/6/2009 1:24 pm

Views: 114
Rating: 8

> an4 (an4_raw.bigendian.tar)

Downlaod NIST

> iMac

Try to add "-machine_endian big" in ./scripts/make_feats.pl.

--- (Edited on 2/6/2009 1:24 pm [GMT-0600] by nsh) ---

Re: Bad accuracy in SPHINX-3 preliminary decode

User: Yann
Date: 2/8/2009 3:08 am

Views: 1706
Rating: 8

Hi nsh,

Thank you very much for your prompt reply.

First I tried to add "-machine_endian big" in ./scripts/make_feats.pl but this did not solve the problem.

Then, following your first advice, I used an4 coming from an4_raw.littleendian.tar and this time decode ran perfectly, providing the expected results.

Again, thank you very much for your help!

--- (Edited on 2/8/2009 3:08 am [GMT-0600] by Yann) ---

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