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Maximum a Posteriori Estimation using HTK
User: bharath5000
Date: 2/3/2011 9:42 pm
Views: 8391
Rating: 9

Can anyone pls tell me how to do MAP using HTK?

Our aim is to convert a cluster of speaker independent models to Speaker Dependent models.

Thanks.

--- (Edited on 2/3/2011 9:42 pm [GMT-0600] by bharath5000) ---

Re: Maximum a Posteriori Estimation using HTK
User: kmaclean
Date: 2/11/2011 10:25 pm
Views: 124
Rating: 11

 >Can anyone pls tell me how to do MAP using HTK?

you might talk to someone at the falabrazil project. 

The paper describing their project (An Open-Source Speech Recognizer for Brazilian Portuguese with a Windows Programming Interface) mentions that they used MLLR and MAP for acoustic model adaptation. 

In addition, there is lots of code on their web site that might also provide some hints.

--- (Edited on 2/11/2011 11:25 pm [GMT-0500] by kmaclean) ---

Re: Maximum a Posteriori Estimation using HTK
User: iimtl
Date: 2/16/2011 5:27 am
Views: 440
Rating: 11

consider 

HERest 

with option

-u p

If you want update only means

use

-u mp

See the help of HERest

Ted Kim

--- (Edited on 2/16/2011 8:27 pm [GMT+0900] by iimtl) ---

Re: Maximum a Posteriori Estimation using HTK
User: cal
Date: 2/22/2013 6:05 am
Views: 396
Rating: 6

I am trying to implement MAP adaptation in htk, but I can not find any example.


Is it enough to set the option "-u p" in HERest? Does MAP modify directly the models or does it generate transforms like MLLR? Because I can not find any transform.


Moreover.. to test the adaptation, can I use HVite normally on the model modified by MAP or should I use the transforms?

Thank you veryc much in advance!!

--- (Edited on 2/22/2013 6:05 am [GMT-0600] by Visitor) ---

Re: Maximum a Posteriori Estimation using HTK
User: Hoalong
Date: 6/23/2013 3:55 am
Views: 578
Rating: 7

Use option "-u p" and "-M dir" to save adapted hmm in dir

 

--- (Edited on 6/23/2013 3:55 am [GMT-0500] by Visitor) ---

Re: Maximum a Posteriori Estimation using HTK
User: meiring
Date: 6/19/2014 12:02 am
Views: 1706
Rating: 4

I was happening the same problem.

I found the values of hmm files were changed when "-u mp" was set. "-u p" was not though.

Still I don't understand the difference between "mp" and "p"only.

--- (Edited on 6/19/2014 12:02 am [GMT-0500] by Visitor) ---

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