Using -A argument

[Hugo B]

I’m trying to catch errors when HTK fails – I’ve seen your (Simon’s) combine_mlfs.sh script & how it does this. However, I’m trying to catch errors to know exactly which user is failing when running some HTK script, while using the -S option. I see that one way to access command line arguments in HTK is the -A option, but I can’t see any guidqnce as to how to actually use this argument? I just want to take the arguments that HInit has (e.g. ‘WORD’, ‘USER’ etc.) and write the USER argument to a bad_users script.

[Simon]

In Unix (and Linux) type operating systems, when process finishes, it exits with a status. This is 0 for success and some other number if there was an error. This status is available immediately afterwards in the shell variable $? and here is how you might test that:

HInit -T 0 \
    -G ESPS \
    -m 1 \
    -C resources/CONFIG \
    -l $WORD \
    -M models/hmm0 \
    -o $WORD \
    -L ${DATA}/lab/train \
    -S ${SCRIPT_FILE} \
    models/proto/$PROTO
    
if [ $? -ne 0 ]
then
    echo "HInit failed for script file "${SCRIPT_FILE}
    exit 1
fi

The command exit 1 means that this script will immediately exit with status 1, which you could detect in the script that called it – so, you can propagate the error back up to the top-level script (e.g., do_experiments).

[Will L]

I’m implementing Simon’s suggestion for catching run errors. I can’t get this to work in the recognise script when I run a dependent_speaker model for panagiot. Here’s the error associated with panagiot:

File: /Volumes/Network/courses/sp/data/mfcc/test/panagiot_test.3.mfcc
six  ==  [80 frames] -75.6707 [Ac=-6053.7 LM=0.0] (Act=22.7)
  ERROR [+6510]  LOpen: Unable to open label file rec/panagiot_test.2.lab
 FATAL ERROR - Terminating program HResults
(standard_in) 2: syntax error

And here are the lines that are trying to catch the error, unsuccessfully:

HVite -T 1 -C resources/CONFIG \
        -d models/hmm1 \
        -l rec \
        -w resources/grammar_as_network \
        resources/dictionary \
        resources/word_list \
        ${F}

 if [ $? -ne 0 ]
 then
        echo "HVite failed for user "${USER}
        exit 1
 fi

done

Grateful for suggestions!

[Simon]

Your error is occurring with HResults, not HVite :

FATAL ERROR - Terminating program HResults

[Will L]

Thanks, Simon. Oops – here is the code I have under HResults:

HResults -p \
 -I ${DATA}/lab/test/${USER}_test.mlf \
 resources/word_list \
 rec/${USER}_test?(_)??.rec

if [ $? -ne 0 ]
then
        echo "HResults failed for user "${USER}
        exit 1
fi

[Simon]

The error

Unable to open label file rec/panagiot_test.2.lab

tells us that HResults cannot find the .lab file (which contains the correct label) corresponding to the recognition result stored in the file in rec/panagiot_test.2.rec

HResults is looking for that .lab file in the rec directory. But this is because it did not find it within the MLF (multiple label file) panagiot_test.mlf – perhaps this file is missing from that user’s data?

The error

(standard_in) 2: syntax error

occurs later – so debug that next…

[Author]

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