See also Fraser and Marcu's analysis of AER:
http://aclweb.org/anthology-new/J/J07/J07-3002.pdf

On Wed, Mar 4, 2009 at 1:46 PM, Miles Osborne <[email protected]> wrote:

> one thing to remember is that the link between AER and BLEU is not
> obvious;  in my view at least AER-like scores should be treated with
> skepticism and the real merit of an alignment approach should be the
> corresponding translation performance (BLEU etc).
>
> can you provide associated BLEU scores for those AER numbers?
>
> Miles
>
> 2009/3/4 J.Tiedemann <[email protected]>:
> >
> > hi,
> >
> > I'm just wondering if Och's "refined" heuristics is also implemented
> > in Moses. The "grow-diag" is not exactly the same as far as I
> > understand.
> >
> > The reason why I'm asking is because I found out that in all of my
> > experiments with europarl data the "intersection" always produces  the
> > best results in terms of AER (for example using the wpt03 data)
> > whereas I see better performances reported for refined compared with
> > intersection in various papers (also for the wpt03 data). However, I
> > cannot believe that the grow-heuristics would perform so much worse
> > than the original "refined" approach.
> >
> > My AER scores with standard GIZA settings and moses heuristics  for
> > wpt03 data are the following:
> >
> > moses.intersect             AER = 0.0613
> > moses.grow-diag             AER = 0.0843
> > moses.grow-diag-final-and   AER = 0.0926
> > moses.grow-diag-final       AER = 0.1312
> > moses.srctotgt              AER = 0.1039
> > moses.tgttosrc              AER = 0.1162
> > moses.union                 AER = 0.1444
> >
> > does this sound reasonable?
> >
> >
> > Jorg
> > _______________________________________________
> > Moses-support mailing list
> > [email protected]
> > http://mailman.mit.edu/mailman/listinfo/moses-support
> >
>
>
>
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