Hi Per I guess you're talking specifically about "tree-to-tree" models? It's generally recognised that extracting only those rules that respect the tree structure on both sides is far too restrictive - but I'm not sure that translation of verb phrase to a noun phrase is actually impossible.
In any case, there have been many attempts to overcome the restrictions of "pure" tree-to-tree models, for example Zollman's SAMT and David Chiang's fuzzy tree-to-tree models (http://www.isi.edu/~chiang/papers/acl2010-chiang.pdf) - to name but two, cheers - Barry On 17/06/13 08:44, Per Tunedal wrote: > Hi again, > I guess the answer is no. > After rereading the Moses Syntax tutorial, I conclude that hierarchical > models with syntax cannot handle nominalization: > > A rule translating a verb phrase to a noun phrase cannot be extracted. > > Yours, > Per Tunedal > > On Sat, Jun 15, 2013, at 14:11, Per Tunedal wrote: >> Hi, >> working with French and Swedish I'm wondering if Moses and in particular >> an Hierarchical model with syntax on both sides can handle >> nominalization. >> >> Swedes often prefer to express certain kinds of meaning with a verb, >> where Frenchmen prefer a noun: >> >> Jag är förvånad över att HAN LYCKADES. (he succeeded) >> Je m'étonne de SA RÉUSSITE. (his success) >> >> Looking at a description of synchronous context-free grammar I conclude >> that a rule must have one and only one symbol to the left. This would >> imply that verb phrases could only be translated to verb phrases, noun >> phrases only to noun phrases. Is this true for Moses or are the >> tree-rules constructed in a way that masters this problem? >> >> I haven't yet managed to verify this in my tests. >> >> Yours, >> Per Tunedal >> >> _______________________________________________ >> Moses-support mailing list >> [email protected] >> http://mailman.mit.edu/mailman/listinfo/moses-support > _______________________________________________ > Moses-support mailing list > [email protected] > http://mailman.mit.edu/mailman/listinfo/moses-support -- The University of Edinburgh is a charitable body, registered in Scotland, with registration number SC005336. _______________________________________________ Moses-support mailing list [email protected] http://mailman.mit.edu/mailman/listinfo/moses-support
