Moses-support Digest, Vol 141, Issue 1

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Today's Topics:

1. What is alignment score in output file with extension
".A3.final" in MOSES (Jyoti Srivastava)


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Message: 1
Date: Tue, 3 Jul 2018 15:01:03 +0530
From: Jyoti Srivastava <jyoti11s@gmail.com>
Subject: [Moses-support] What is alignment score in output file with
extension ".A3.final" in MOSES
To: moses-support@mit.edu
Message-ID:
<CAFxbX9vwJZo7uxF9SEPx6E7y0M-6rRy=GL__uBnT7hu5pmfP6A@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

>
>
> Dear Sir/Madam
>
> Please Please Please help me. I am still confused that file generated with
> ".A3.final" extension by MOSES contains information like given below:
>
> # Sentence pair (3) source length 10 target length 9
> *alignment score :1.48814e-16*
> this is a famous abode of Lord Shiva .
>
NULL ({ }) ???? ({ 3 }) ?????? ({ }) ?? ({ 1 }) ????? ({ 7 }) ???? ({ 8 })
?? ({ 6 }) ???????? ({ 4 }) ???? ({ 5 }) ?? ({ 2 }) ? ({ 9 })

>
> I want to know what is this alignment score. Some people says that it is
> viterbi alignment score generated by HMM. Some people says that it is
> alignment score generated by IBM Model 4 and give reference of ?The
> Mathematics of Statistical Machine Translation: Parameter Estimation?.
> Honestly, I read that document many times and it is really hard to
> understand for me to know exactly "alignment score". Is this "relative
> distortion a(i|j, m,l)"?
> I want to know that if I need to describe this alignment score in one line
> then what should I write?
> Please help me.
>
> Thanks and regards
> Jyoti Srivastava
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