W dniu 10.02.2014 20:46, Barry Haddow pisze: Ah, by the way, is removing the Distortion feature from the ini file and setting the limit to 1 a safe way to actually disable distortion? Moses does not complain (I always thought it is required.) Best, Marcin
> Hi Marcin > > I had some fun with --activate-features in the past - I think the > syntax was rather strange. If it is not working now, it may have got > dropped by the recent refactoring > > My advice would be to use kbmira (or pro), since they are regularised > they don't go crazy when there is an uninformative feature. That way, > you don't have to fiddle with feature activation, > > cheers - Barry > > On 10/02/14 18:01, Marcin Junczys-Dowmunt wrote: >> Hi, >> it seems --activate-features=STRING is not working in mert-moses.perl. >> The script prints a message that the ignored features are not being >> used, but then optimizes them anyway. I can see that the "enabled" >> information in the feature data structure is not being used anywhere in >> the script once it has been set (apart from printing the message). >> >> This can cause an interesting catastrophe when, for instance, distortion >> is disabled by setting the limit to 1: >> MERT assigns a weight of 1 to distortion (but the feature itself is >> always 0) and 0 weights to all other features, the final score is then >> equal to 0 for all sentences and poor moses goes crazy generating lots >> of garbage which in turn takes ages to score only to finish with bad >> weights. Really ugly, took me a while to find the cause :) >> >> BTW. In my opinon a --deactive-features might be more useful. I would >> add/correct it myself, but currently I am getting lost in the code that >> is printing the config files. Someone more acquainted with that code? >> Best, >> Marcin >> _______________________________________________ >> 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
