[hts-users:02250] Error in train transitions matrix

[Xingchi Xian <yeahxxc@xxxxxxxxx>]

Hi all,

I want use the HSMM I've trained to do state alignment, thus I use Simon's recommendation to deal with this issue. I do this as follows.

1.Untie the shared transition stuctrue and retie it in terms of each phone, my .hed file is:

TR 2

UT {*.transP}

TI T_a {(*-a+*).transP}

TI T_ai {(*-ai+*).transP}

TI T_an {(*-an+*).transP}

TI T_ang {(*-ang+*).transP}

TI T_ao {(*-ao+*).transP}

...

AT 2 2 0.9 {*.transP}

AT 2 3 0.1 {*.transP}

AT 3 3 0.9 {*.transP}

AT 3 4 0.1 {*.transP}

AT 4 4 0.9 {*.transP}

AT 4 5 0.1 {*.transP}

AT 5 5 0.9 {*.transP}

AT 5 6 0.1 {*.transP}

AT 6 6 0.9 {*.transP}

AT 6 7 0.1 {*.transP}

There is no problem at this stage. The model file is stored in untiedt.mmf 

2. Retrain the transition matrix using the commond below.

/usr/local/HTS-2.1/bin/HERest -A -B -C xxx/configs/trn.cnf -D -T 1 -S xxx/data/scp/train.scp -I xxx/data/labels/full.mlf -m 1 -u t -w 3 -t 1500 100 5000 -H xxx/models/qst001/ver1/cmp/untiedt.mmf -N xxx/models/qst001/ver1/dur/untied.mmf -M xxx/models/qst001/ver1/cmp -R xxx/models/qst001/ver1/dur -C xxx/configs/nvf.cnf -s xxx/stats/qst001/ver1/cmp.stats.untiedt -w 0.0 xxx/data/lists/full.list xxx/data/lists/full.list 

However, it shows that 

 Processing Data: xxx_0001.cmp; Label xxx_0001.lab

Retrying Beta pass at 1600.0

Retrying Beta pass at 1700.0

Retrying Beta pass at 1800.0

Retrying Beta pass at 1900.0

Retrying Beta pass at 2000.0

Retrying Beta pass at 2100.0

Retrying Beta pass at 2200.0

Retrying Beta pass at 2300.0

...

 WARNING [-7324]  StepBack: Bad data or over pruning

ERROR [+7390]  StepAlpha: Alpha prune failed sq(43) > qHi(42) at time 1109

What's wrong with my manipulation? (Machine: 64bit Linux, 16GB mem)

Thanks for help!

Xian Xingchi