Re: [Kaldi-developers] Errors when training mono-state NN in SWBD recipe

[Daniel P. <dp...@gm...>]

Could you please do the following. [apologies if you already know gdb]

First do utils/validate_lang.pl data/lang_test_phn-mono/
and let me know if it fails.
If it doesn't fail, do:

gdb --args fstcomposecontext --context-size=1 --central-position=0
--read-disambig-syms=data/lang_test_phn-mono/phones/disambig.int
--write-disambig-syms=data/lang_test_
phn-mono/tmp/disambig_ilabels_1_0.int data/lang_test_phn-mono/tmp/ilabels_1_0
data/lang_test_phn-mono/tmp/LG.fst

(gdb) r
# wait till it crashes
# go up the stack by typing "up" until you get to the right frame; type
"down" if you go too far

(gdb) p subsequential_symbol
(gdb) p  disambig_syms_.count(subsequential_symbol)
(gdb) p phone_syms_.count(subsequential_symbol)
(gdb) p phone_syms_.size()
(gdb) p disambig_syms_.size()
(gdb) quit

[I hope this works; sometimes it will fail because functions are inlined].
Anyway, send the output, and also
cat data/lang_test_phn-mono/phones/disambig.int
and show me that output too.

Dan




On Fri, Dec 27, 2013 at 10:23 AM, Xavier Anguera <xan...@gm...> wrote:

> Dear all,
> I am encounering a problem when training mono-state NN using a recipe
> adapted from the SWBD S5 recipe. I am able to train, decode and phone-align
> a GMM system, but when I use these results to train the NN I get the
> following error (see below). I have used this recipe in the past to
> successfully train one ASR system and now the only difference is that I am
> trying to train a similar system using graphemes are phonemes (for which I
> have assigned the graphemes of the words as transcriptions to each word).
> Any help is appreciated.
>
> This is the beginning of the file exp/mono/graph/mkgraph_phn.log:
>
> # utils/mkgraph.sh --mono data/lang_test_phn-mono exp/mono
> exp/mono/graph_phn
> # Started at Fri Dec 27 18:57:19 CET 2013
> #
> fsttablecompose data/lang_test_phn-mono/L_disambig.fst
> data/lang_test_phn-mono/G.fst
> fstdeterminizestar --use-log=true
> fstminimizeencoded
> fstisstochastic data/lang_test_phn-mono/tmp/LG.fst
> 0.000358155 -0.000356635
> fstcomposecontext --context-size=1 --central-position=0
> --read-disambig-syms=data/lang_test_phn-mono/phones/disambig.int--write-disambig-syms=data/lang_test_
> phn-mono/tmp/disambig_ilabels_1_0.intdata/lang_test_phn-mono/tmp/ilabels_1_0
> fstcomposecontext: ../fstext/context-fst-inl.h:105:
> fst::ContextFstImpl<Arc, LabelT>::ContextFstImpl(typename Arc::Label, const
> std::vector<B, std::allocator<
> _T2> >&, const std::vector<B, std::allocator<_T2> >&, int, int) [with Arc
> = fst::ArcTpl<fst::TropicalWeightTpl<float> >, LabelT = int]: Assertion
> `subsequenti
> al_symbol != 0 && disambig_syms_.count(subsequential_symbol) == 0 &&
> phone_syms_.count(subsequential_symbol) == 0' failed.
> utils/mkgraph.sh: line 76:  6263 Aborted                 fstcomposecontext
> --context-size=$N --central-position=$P
> --read-disambig-syms=$lang/phones/disambig.
> int --write-disambig-syms=$lang/tmp/disambig_ilabels_${N}_${P}.int
> $lang/tmp/ilabels_${N}_${P} < $lang/tmp/LG.fst > $clg
> fstisstochastic data/lang_test_phn-mono/tmp/CLG_1_0.fst
> ERROR: FstHeader::Read: Bad FST header:
> data/lang_test_phn-mono/tmp/CLG_1_0.fst
> ERROR (fstisstochastic:ReadFstKaldi():fstext/fstext-utils-inl.h:1183)
> Reading FST: error reading FST header from
> data/lang_test_phn-mono/tmp/CLG_1_0.fst
> ERROR (fstisstochastic:ReadFstKaldi():fstext/fstext-utils-inl.h:1183)
> Reading FST: error reading FST header from
> data/lang_test_phn-mono/tmp/CLG_1_0.fst
>
>
>
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