[hts-users:01414] Re: Help on Forward Backward routines

["Heiga ZEN (Byung Ha CHUN)" <zen@xxxxxxxxxxxxxxx>]

Hi,

jtao@xxxxxxxxxxxxx wrote (2008/06/05 11:15):

> I have a question about function SetBeta(), can you tell me what this 
> function do? 

It calculates the backward probability variables of the forward-backward algorithm.

> How can we gain the beta and otprob matrices by this 
> function SetBeta()?
> And  how does the member variable DVector **beta of structure AlphaBeta 
> update?

See HTKBook Section 8.8.2.
DVector beta[t][q][j] corresponds to \beta_j^q(t).

Regards,

Heiga ZEN (Byung Ha CHUN)

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Heiga ZEN     (in Japanese pronunciation)
Byung Ha CHUN (in Korean pronunciation)

Department of Computer Science and Engineering
Nagoya Institute of Technology
Gokiso-cho, Showa-ku, Nagoya 466-8555 Japan

http://www.sp.nitech.ac.jp/~zen
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