On 09.06.2012 16:45, Philipp Koehn wrote: > Hi, > > the idea here was to create a link between the > words and POS tags early on and use this as > an additional scoring function. But if you see better > performance with your setting, please report back.
The additional generation factor causes a slow-down to ca. 50 sentences per hour using 6 threads. Without it speed is acceptable, around 20 min for 2000 sentences, also 6 threads. I am using the English-Polish part of the Europarl corpus, translating to Polish. I cannot say much about translation quality, since I did not have to patience to wait for the first version :). Without the 1-2 generation factor there seems to be a small improvement in BLEU compared to a pure surface model. Best, Marcin > -phi > > On Fri, Jun 8, 2012 at 6:03 PM, Marcin Junczys-Dowmunt > <[email protected]> wrote: >> Hi all, >> I have a question concerning the "Tutorial for Using Factored Models", >> section on "Train a morphological analysis and generation model". >> >> The following translation factors and generation factors are trained for >> the given example corpus: >> >> --translation-factors 1-1+3-2 \ >> --generation-factors 1-2+1,2-0 \ >> --decoding-steps t0,g0,t1,g1 >> >> What is the advantage of using the first generation factor 1-2 compared >> to the configuration below? >> >> --translation-factors 1-1+3-2 \ >> --generation-factors 1,2-0 \ >> --decoding-steps t0,t1,g1 >> >> I understand the 1-2 generation factor maps lemmas to POS+morph >> information, but the same information is also generated by the 3-2 >> translation factor. Apart from that this generation factor introduces >> huge combinatorial blow-up, since every lemma can be mapped to basically >> every possible morphological information seen for this lemma. >> _______________________________________________ >> Moses-support mailing list >> [email protected] >> http://mailman.mit.edu/mailman/listinfo/moses-support > -- dr inż. Marcin Junczys-Dowmunt Uniwersytet im. Adama Mickiewicza Wydział Matematyki i Informatyki ul. Umultowska 87 61-614 Poznań _______________________________________________ Moses-support mailing list [email protected] http://mailman.mit.edu/mailman/listinfo/moses-support
