Moses-support Digest, Vol 122, Issue 1

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Today's Topics:

1. Hardware specs and setup effort (Martin Wunderlich)
2. Tuning for factored phrase based systems (Angli Liu)
3. Re: Hardware specs and setup effort (Hieu Hoang)


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Message: 1
Date: Wed, 30 Nov 2016 21:39:54 +0100
From: Martin Wunderlich <martin@wunderlich.com>
Subject: [Moses-support] Hardware specs and setup effort
To: moses-support@mit.edu
Message-ID: <95ede44d-5e54-a8a5-bec5-90b3741522a9@wunderlich.com>
Content-Type: text/plain; charset=utf-8; format=flowed

Hi all,

I have already searched the documentation and list archives, but I
haven't been able to retrieve the desired information that way. I have
three basic questions:
- What are the recommended and minimum hardware specs for running the MT
engine?
- How much effort is it to setup the system when starting from scratch?
- And finally, how does it compare to other systems (ModernMT, Phrasal,
Apertium) in terms of performance? (I know there is variety of factors
influencing this, but maybe someone has experience with a comparative
evaluation of these systems or could point me to some good resources)

Thanks a lot.

Cheers,
Martin



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Message: 2
Date: Wed, 30 Nov 2016 23:01:05 -0800
From: Angli Liu <anglil@cs.washington.edu>
Subject: [Moses-support] Tuning for factored phrase based systems
To: moses-support@mit.edu
Message-ID:
<CAJXA_eMB9M37PqUAFP8=dQz25fJpvtEKFrO_uh=jb2JEZF+vzQ@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hi, what's the major difference between the tuning process for a factored
phrase based system (i.e., surface+pos data) and a simple baseline phrase
based system? Do I need to organize the dev set the same way as the
training set (i.e., surface|pos)? Is there a tutorial on the moses website
on this topic? Thanks!

-Angli
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Message: 3
Date: Thu, 1 Dec 2016 16:18:27 +0000
From: Hieu Hoang <hieuhoang@gmail.com>
Subject: Re: [Moses-support] Hardware specs and setup effort
To: Martin Wunderlich <martin@wunderlich.com>
Cc: moses-support <moses-support@mit.edu>
Message-ID:
<CAEKMkbgvUah_zwCe2Oxs0uqM62KkC7vOU=hyH6Fi=m2LmRxxyg@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Hieu Hoang
http://www.hoang.co.uk/hieu

On 30 November 2016 at 20:39, Martin Wunderlich <martin@wunderlich.com>
wrote:

> Hi all,
>
> I have already searched the documentation and list archives, but I
> haven't been able to retrieve the desired information that way. I have
> three basic questions:
> - What are the recommended and minimum hardware specs for running the MT
> engine?
>
I would personally say the minimum is 8GB RAM and 2 cores. I used to run
Moses on a laptop this way, mostly with Europarl-sized data. However, you
may need to adjust some settings to make sure it runs as efficiently as
possible.

A more reasonable requirement is 32GB RAM and as many cores as you can
afford.

The training is mostly parallelizable. mgiza can use a maximum of 8 cores.
Phrase-extraction can use as many cores as required. The decoder scales up
to ~16 cores. The new decoder (moses2) scales to much more cores.



> - How much effort is it to setup the system when starting from scratch?
>

It takes me about an hour to set up everything from scratch, but then I've
done this for 10yrs! It's best to sit with someone who's done it before to
go thru it the 1st time.

You can also use
http://www.statmt.org/moses/RELEASE-3.0/vm/
or some of the pre-packaged resources
http://www.statmt.org/moses/?n=Moses.Packages

Make sure you've go thru the tutorial if you haven't already done so:
http://www.statmt.org/moses/?n=Moses.Baseline



> - And finally, how does it compare to other systems (ModernMT, Phrasal,
> Apertium) in terms of performance? (I know there is variety of factors
> influencing this, but maybe someone has experience with a comparative
> evaluation of these systems or could point me to some good resources)
>

I don't know the other systems (I think MMT is a fork of Moses). If you
find out more, please let me know

>
> Thanks a lot.
>
> Cheers,
> Martin
>
> _______________________________________________
> Moses-support mailing list
> Moses-support@mit.edu
> http://mailman.mit.edu/mailman/listinfo/moses-support
>
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