Re: [Kaldi-users] issues with decoding (self loops) in tri2a for 1-minute speech segments

[Mailing l. u. f. U. C. a. U. <kal...@li...>]

Can you describe the language model you use for the decoding phase?
I'd like to know in order to understand what scenarios this is most
likely to happen in.
What values did you use for "beam" and "lattice-beam"?  Typically you
should be able to solve these problems by reducing "lattice-beam".


Dan


On Sun, Jun 30, 2013 at 3:26 PM, Mailing list used for User
Communication and Updates <kal...@li...> wrote:
>
> Hello,
>
> I'm trying to decode long (1 minute) speech segments (multiple sentences)
> having trained on short (<15 second) corpuses.   For some reason I get
> random failures of the following(even longer logs below):
>
> WARNING (gmm-latgen-simple:Close():kaldi-io.cc:444) Pipe compute-cmvn-stats
> scp:data/test_childspeech/feats.scp ark:- | apply-cmvn --norm-vars=false
> ark:- scp:data/test_childspeech/feats.scp ark:- | add-deltas ark:- ark:- |
> had nonzero return status 36096
> ERROR
> (gmm-latgen-simple:EpsilonClosure():fstext/determinize-lattice-pruned-inl.h:664)
> Lattice determinization aborted since looped more than 500000 times during
> epsilon closure.
>
> I've had it decode 135 of these, but sometimes it will fail after 5-10 with
> this error.
>
> My training model is the LDC9763 child's speech corpus, of which I use about
> 4K sentences.  If I test on a subset (100 not int he training set) I get
> great results (using the tri2a method).
>
> The language model I use for testing is the target speakers' target sentence
> (45 speakers speaking the same 3 sentences).
>
> Next, I was going to try breaking up the decoding into smaller segments
> (those seem to work) as well as have a more accurate language model for the
> decoding phase.
>
> Any ideas?
>
> Thanks,
>
> Nathan
>
>
>
>
> LOG
> (gmm-latgen-simple:RebuildRepository():fstext/determinize-lattice-pruned-inl.h:285)
> Rebuilding repository.
> LOG
> (gmm-latgen-simple:RebuildRepository():fstext/determinize-lattice-pruned-inl.h:285)
> Rebuilding repository.
> LOG
> (gmm-latgen-simple:RebuildRepository():fstext/determinize-lattice-pruned-inl.h:285)
> Rebuilding repository.
> LOG
> (gmm-latgen-simple:RebuildRepository():fstext/determinize-lattice-pruned-inl.h:285)
> Rebuilding repository.
> LOG
> (gmm-latgen-simple:RebuildRepository():fstext/determinize-lattice-pruned-inl.h:285)
> Rebuilding repository.
> LOG
> (gmm-latgen-simple:RebuildRepository():fstext/determinize-lattice-pruned-inl.h:285)
> Rebuilding repository.
> LOG
> (gmm-latgen-simple:RebuildRepository():fstext/determinize-lattice-pruned-inl.
>
> Nathan Dunn, Ph.D.
> Scientific Programer
> College of Arts and Science IT
> 541-221-2418
> nd...@ca...
>
>
>
>
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