[hts-users:01126] Re: Parallel mode HERest for HSMMs?

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

Hi,

Sacha Krstulovic wrote (2008/01/23 3:44):

> Regarding the application of HERest to the re-estimation
> of Hidden Semi-Markov Models (HSMMs) instead of plain HMMs:
>
> is the HTS patch designed to maintain the optional parallel mode
> operation of HERest (option -p, which can dump the accumulators
> to disk and then reload them later), or is the patch known
> or expected to break this functionality?

HTS-2.1beta supports parallel mode operation.
The first HTS-2.1beta release (hts-users:01097) included a bug related to it, 
so I fixed it in the latest one.

If you run HERest with HSMMs in parallel mode (e.g. -p 1), 
HERest dumps the following 2 files:

HER1.hmm.acc  HER1.dur.acc

They are accumulated statistics of state output and duration PDFs.
You can update model parameters by running HERest as

HERest -p 0 ... HER1.hmm.acc HER1.dur.acc HER2.hmm.acc HER2.dur.acc ...

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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