Thanks for the clarification, Ken. It seems symmetrization applies to giza++, but not to berkeley or the recaser. So, I've chosen to use '1-to-1'.
Regards, Tom On Tue, 03 Jan 2012 23:47:17 +0700, Hieu Hoang wrote: at a guess, berkeley was added because the output from the berkeley aligner doesn't need to by symmeterized like those from giza++. '1-to-1', or 'monotonic', is a good name for the alignments in the train-recaser, but i think the name really refers to symmetrization, in which case 'none' would be appropriate. On 01/01/2012 19:44, Tom Hoar wrote: Thanks Hieu. Sorry, your name is at the top of the revision I had. So, I open the question to anyone who can shed some light. I understand the GIZA++ alignment types aren't relevant to the recaser. However, EMS calls these "alignment-symmetrization-method" and adds "berleley" as a new value "name", like so: alignment-symmetrization-method = grow-diag-final-and vs. alignment-symmetrization-method = berkeley I want to know if the simple one-for-one alignment method used in train-recaser.perl has its own name, or if one of the existing names would apply. Tom On Sun, 1 Jan 2012 16:27:48 +0700, Hieu Hoang [1] wrote: hiya tom i didn't write that code but from what i know, it doesn't matter. The alignment types are to do with how would create the final alignment from the GIZA++ forward & reverse alignment. Since the reccaser is given the final alignment, those aren't relevant On Sun, Jan 1, 2012 at 10:38 AM, Tom Hoar wrote: Hieu, The train-model.perl script and the manual lists these 7 alignment types: intersect, union, grow, grow-final, grow-diag, grow-diag-final, grow-diag-final-and, srctotgt, tgttosrc. The train-recaser.perl script creates its own alignment file between the cased and lowercased data it creates, and initiates train-model.perl at step 4 with this alignment file. Does the recaser's alignment file fit into one of the seven types, or is it its own type? If it's its own type, does that type have a common name? Thanks, Tom _______________________________________________ Moses-support mailing list [email protected] [3] http://mailman.mit.edu/mailman/listinfo/moses-support [4] _______________________________________________ Moses-support mailing list [email protected] [5] http://mailman.mit.edu/mailman/listinfo/moses-support [6] Links: ------ [1] mailto:[email protected] [2] mailto:[email protected] [3] mailto:[email protected] [4] http://mailman.mit.edu/mailman/listinfo/moses-support [5] mailto:[email protected] [6] http://mailman.mit.edu/mailman/listinfo/moses-support
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