> With the default setting of Moses (phrase-based, distance-based reordering
> ...), the handling of unknown words will be postponed (as we penalize them
> severely : -100) until the very end.
>
> Therefore, it is likely that some unknown words are dropped and won't
> appear in the output (due to the reordering limit constraint (default = 6)
> !
>

Hi

The distortion limit won't allow the processing of unknown words to be left 
until the end of the sentence, unless the unknown word is sufficiently close 
to the end. For a precise statement of how the distortion limit works in 
moses (and other phrase-based models). see here:
http://homepages.inf.ed.ac.uk/alopez/papers/eacl2009-lopez.pdf

Also, moses (with default settings) doesn't drop source words, so the 
translation won't be finished until all source words are covered.

best regards
Barry

-- 
The University of Edinburgh is a charitable body, registered in
Scotland, with registration number SC005336.

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