Moses-support Digest, Vol 110, Issue 42

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Today's Topics:

1. Re: Doubts on Multiple Decoding Paths (Anoop (?????))


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Message: 1
Date: Fri, 25 Dec 2015 14:10:39 +0530
From: Anoop (?????) <anoop.kunchukuttan@gmail.com>
Subject: Re: [Moses-support] Doubts on Multiple Decoding Paths
To: Michael Denkowski <michael.j.denkowski@gmail.com>
Cc: moses-support <moses-support@mit.edu>, Philipp Koehn <phi@jhu.edu>
Message-ID:
<CADXxMYdC-HJQGk39y98ZFGME8+uo5h2kXTQLbDHEAnvDdkPdEw@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hi Michael,

Is there a publication/document describing the *union *option or its use
in an MT scenario?

Regards,
Anoop.

On Sat, Dec 19, 2015 at 3:38 AM, Michael Denkowski <
michael.j.denkowski@gmail.com> wrote:

> Hi Anoop,
>
> Confirming that your reading of "union" is in fact how it works. If you
> want each phrase to be scored by all tables without having to worry about
> making sure every phrase is in every table, I you can use
> PhraseDictionaryGroup with default-average-others=true. This multiplies
> the size of the phrase feature set by the number of models, so I recommend
> running mer-moses.pl with --batch-mira.
>
> Best,
> Michael
>
> On Fri, Dec 18, 2015 at 1:08 PM, Philipp Koehn <phi@jhu.edu> wrote:
>
>> Hi,
>>
>> that sounds right.
>>
>> The "union" option is fairly new, developed by Michael Denkowski.
>> I am not aware of any empirical study of the different methods,
>> so I'd be curious to see what you find.
>>
>> -phi
>>
>> On Fri, Dec 18, 2015 at 1:35 AM, Anoop (?????) <
>> anoop.kunchukuttan@gmail.com> wrote:
>>
>>> Hi,
>>>
>>> I am trying to understand the multiple decoding paths feature in Moses.
>>>
>>> The documentation (http://www.statmt.org/moses/?n=Advanced.Models#ntoc7)
>>> describes 3 methods: both, either and union
>>>
>>> The following is my understanding of the options. Please let me know if
>>> it is correct:
>>>
>>>
>>> - With *both* option, the constituent phrases of the target
>>> hypothesis come from both tables (since they are shared) and are scored
>>> with both the tables.
>>> - With *either* option, all the constituent phrases of a target
>>> hypothesis come from a single table, but different hypothesis can use
>>> different tables. Each hypothesis is scored using one table only. I did not
>>> understand the " additional options are collected from the other tables"
>>> bit in the documentation.
>>> - With *union* option, the constituent phrases of a target
>>> hypothesis come from different tables and are scored using scores from all
>>> the tables. Use 0 if the option doesn't appear in some table, unless the
>>> *default-average-others=true* option is used.
>>>
>>>
>>> Regards,
>>> Anoop.
>>>
>>> --
>>> I claim to be a simple individual liable to err like any other fellow
>>> mortal. I own, however, that I have humility enough to confess my errors
>>> and to retrace my steps.
>>>
>>> http://flightsofthought.blogspot.com
>>>
>>> _______________________________________________
>>> Moses-support mailing list
>>> Moses-support@mit.edu
>>> http://mailman.mit.edu/mailman/listinfo/moses-support
>>>
>>>
>>
>> _______________________________________________
>> Moses-support mailing list
>> Moses-support@mit.edu
>> http://mailman.mit.edu/mailman/listinfo/moses-support
>>
>>
>


--
I claim to be a simple individual liable to err like any other fellow
mortal. I own, however, that I have humility enough to confess my errors
and to retrace my steps.

http://flightsofthought.blogspot.com
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