Moses-support Digest, Vol 121, Issue 32

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Today's Topics:

1. Re: Does PhraseDictionaryMultiModel require all models to
contain all phrases? (Vito Mandorino)


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

Message: 1
Date: Wed, 16 Nov 2016 17:32:55 +0100
From: Vito Mandorino <vito.mandorino@linguacustodia.com>
Subject: Re: [Moses-support] Does PhraseDictionaryMultiModel require
all models to contain all phrases?
To: Lane Schwartz <dowobeha@gmail.com>
Cc: "moses-support@mit.edu" <moses-support@mit.edu>
Message-ID:
<CA+8mSmHfTVmowMWGU_YMXaWpyWs-L1KiLWvfLZmGYH2+tZ-+Ag@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hi Lane,

as far as I know the PhraseDictionaryMultiModel does a linear interpolation
of two or more phrase-tables at decoding time and is equivalent to linearly
interpolate the phrase-table beforehand, except maybe for some
pruning-related corner cases.

If a translation option is not present in one of the phrase-tables, it is
considered as having zero (or very low, e.g. 10e-6) probability for that
phrase-table. I guess that the answer to your last question is yes, at
least in the general case (phrase-tables coming from training on a
bilingual corpus).

Vito


2016-11-16 16:41 GMT+01:00 Lane Schwartz <dowobeha@gmail.com>:

> Hi,
>
> I'm potentially interested in using PhraseDictionaryMultiModel, and how it
> differs from PhraseDictionaryGroup.
>
> With PhraseDictionaryMultiModel, is it OK to have disjoint phrase tables?
> That is, can PhraseDictionaryMultiModel handle the situation where a
> translation option is present in one table but not the other(s)?
>
> Thanks,
> Lane
>
>
> _______________________________________________
> Moses-support mailing list
> Moses-support@mit.edu
> http://mailman.mit.edu/mailman/listinfo/moses-support
>
>


--
*M**. Vito MANDORINO -- Chief Scientist*


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*Email :* *vito.mandorino@linguacustodia.com
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*Website :*
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End of Moses-support Digest, Vol 121, Issue 32
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