Moses-support Digest, Vol 142, Issue 12

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Today's Topics:

1. Re: Fwd: Different translations are obtained from the same
decoder without alignment information (Ergun Bicici)


----------------------------------------------------------------------

Message: 1
Date: Fri, 24 Aug 2018 17:15:05 +0300
From: Ergun Bicici <bicici@gmail.com>
Subject: Re: [Moses-support] Fwd: Different translations are obtained
from the same decoder without alignment information
To: Hieu Hoang <hieuhoang@gmail.com>
Cc: moses-support <moses-support@mit.edu>
Message-ID:
<CAB59qTPAgonMZWd_Rbr4EQRPCfzswhXKjLcWvU_etEPdWynePQ@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

only the evaluation decoding steps are repeated that are steps 10, 9, and 7
in the following steps in EMS output:
48 TRAINING:consolidate -> re-using (1)
47 TRAINING:prepare-data -> re-using (1)
46 TRAINING:run-giza -> re-using (1)
45 TRAINING:run-giza-inverse -> re-using (1)
44 TRAINING:symmetrize-giza -> re-using (1)
43 TRAINING:build-lex-trans -> re-using (1)
40 TRAINING:build-osm -> re-using (1)
39 TRAINING:extract-phrases -> re-using (1)
38 TRAINING:build-reordering -> re-using (1)
37 TRAINING:build-ttable -> re-using (1)
34 TRAINING:create-config -> re-using (1)
28 TUNING:truecase-input -> re-using (1)
24 TUNING:truecase-reference -> re-using (1)
21 TUNING:filter -> re-using (1)
20 TUNING:apply-filter -> re-using (1)
19 TUNING:tune -> re-using (1)
18 TUNING:apply-weights -> re-using (1)
15 EVALUATION:test:truecase-input -> re-using (1)
12 EVALUATION:test:filter -> re-using (1)
11 EVALUATION:test:apply-filter -> re-using (1)



*10 EVALUATION:test:decode -> run 9 EVALUATION:test:remove-markup ->
run 7 EVALUATION:test:detruecase-output -> run *3
EVALUATION:test:multi-bleu-c -> run
2 EVALUATION:test:analysis-coverage -> re-using (1)
1 EVALUATION:test:analysis-precision -> run


On Fri, Aug 24, 2018 at 4:39 PM Hieu Hoang <hieuhoang@gmail.com> wrote:

> are you rerunning tuning for each case? Or are you using exactly the same
> moses.ini file for the with and with alignment experiments?
>
> Hieu Hoang
> http://statmt.org/hieu
>
>
> On Fri, 24 Aug 2018 at 14:34, Ergun Bicici <bicici@gmail.com> wrote:
>
>>
>> Dear Moses maintainers,
>>
>> I discovered that the translations obtained differ when alignment flags (--mark-unknown
>> --unknown-word-prefix UNK --print-alignment-inf) are used. Comparison
>> table is attached (en-ru and ru-en are being recomputed). We expect them to
>> be the same since alignment flags only print additional information and
>> they are not supposed to alter decoding. In both, the same EMS system was
>> re-run with the alignment information flags or not.
>>
>> - Average of the absolute difference is 0.0094 BLEU (about 1 BLEU
>> points).
>> - Average of the difference is 0.0051 BLEU (about 0.5 BLEU points,
>> results are better with alignment flags).
>>
>> ?
>>
>> /opt/Programs/SMT/moses/mosesdecoder/bin/moses --version
>>
>> Moses code version (git tag or commit hash):
>> mmt-mvp-v0.12.1-2775-g65c75ff07-dirty
>> Libraries used:
>> Boost version 1.62.0
>>
>> git status
>> On branch RELEASE-4.0
>> Your branch is up to date with 'origin/RELEASE-4.0'.
>>
>>
>> Note: Using alignment information to recase tokens was tried in [1] for
>> en-fi and en-tr to claim positive results. We tried this method in all
>> translation directions we considered as as can be seen in the align row,
>> this only improves the performance for tr-en and en-tr and for tr-en Moses
>> provides better translations without the alignment flags.
>> [1]The JHU Machine Translation Systems for WMT 2016
>> Shuoyang Ding, Kevin Duh, Huda Khayrallah, Philipp Koehn and Matt Post
>> http://www.statmt.org/wmt16/pdf/W16-2310.pdf
>>
>>
>> Best Regards,
>> Ergun
>>
>> Ergun Bi?ici
>> http://bicici.github.com/ <http://ergunbicici.blogspot.com/>
>>
>> _______________________________________________
>> Moses-support mailing list
>> Moses-support@mit.edu
>> http://mailman.mit.edu/mailman/listinfo/moses-support
>>
>

--

Regards,
Ergun
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