Hi Barry, actually with OnDisk table there is virtually no difference (0.2 average difference no matter if re-tuning has been done or not). With compact Phrase-table however the difference is larger. The latest test this morning yields a loss of 14 Bleu score points without re-tuning. I don't know which could be the cause. Sometimes there is this message on loading the phrase-tables tcmalloc: large alloc 1149427712 bytes == 0x28a54000 @
After re-tuning however the difference in BLEU score gets smaller even with compact phrase-table. Best regards, Vito 2015-11-25 21:23 GMT+01:00 Barry Haddow <[email protected]>: > Hi Vito > > The 0.2 difference is after retuning? That's normal then. > > But a difference of 5 bleu without retuning suggests a bug. Did you say > that this only happens with PhraseDictionaryMultiModel? > > cheers - Barry > > > On 25/11/15 13:53, Vito Mandorino wrote: > > Thank you. In our tests it seems that with the OnDisk table the quality is > basically the same between the two versions of Moses (average 0.2 > difference in score Bleu) but for the CompactPhraseTable the difference is > larger (2 points Bleu loss in average after re-tuning with the new version > of Moses, and more than 5 points Bleu in average without re-tuning). > Do you think a better quality would be obtained by running a complete > re-training of the model with the new version of Moses? > > > Best regards, > Vito > > 2015-11-24 16:31 GMT+01:00 Hieu Hoang <[email protected]>: > >> There was a change in the underlying datastructure for stacks, it changed >> from std::set (ordered) to boost::unordered_set. >> >> https://github.com/moses-smt/mosesdecoder/commit/6b182ee5e987a5b2823aea7eaaa7ef0457c6a30d >> This got some speed gains >> >> 1 5 10 15 20 25 30 35 >> 56 real 4m57.795s real 1m19.005s real 0m51.636s real >> 0m49.624s real 0m49.869s real 0m52.475s real 0m53.806s real >> 0m54.957s 13/10 baseline user 4m41.255s user 5m45.086s user >> 6m34.053s user 8m12.430s user 8m10.667s user 8m16.486s user >> 8m10.592s user 8m13.859s >> sys 0m16.514s sys 0m35.494s sys 0m54.513s sys 1m10.643s >> sys 1m18.449s sys 1m21.738s sys 1m23.133s sys 1m25.048s >> >> >> >> >> >> >> >> >> >> 57 real 4m41.148s real 1m16.002s real 0m50.747s real >> 0m48.711s real 0m49.130s real 0m51.473s real 0m53.141s real >> 0m54.513s (56) + unordered set stack user 4m23.968s user 5m30.356s >> user 6m26.167s user 7m39.286s user 7m56.229s user 7m52.669s >> user 7m56.978s user 7m56.216s >> sys 0m17.231s sys 0m35.063s sys 0m54.081s sys 1m10.137s >> sys 1m17.194s sys 1m22.912s sys 1m25.948s sys 1m26.247s >> However, the hypotheses are now added to the stack in a different order >> so there will be slight differences in results >> >> >> On 24/11/2015 13:53, Vito Mandorino wrote: >> >> Hi, >> >> in some of our tests a recent version of Moses (pulled from github last >> week) and an older one do not give the same translations on the same source >> segment (with the same moses.ini). >> Here is the 5-best list for the translation of 'test' with the last week >> version: >> >> 0 ||| test ||| LexicalReordering0= -1.1969 0 0 0 0 0 Distortion0= 0 LM0= >> -51.1788 WordPenalty0= -1 PhrasePenalty0= 1 PhraseDictionaryMultiModel0= >> -3.03811 -2.5834 -2.08503 -1.83075 ||| -1.27754 >> 0 ||| testing ||| LexicalReordering0= 0 0 0 0 0 0 Distortion0= 0 LM0= >> -35.1495 WordPenalty0= -1 PhrasePenalty0= 1 PhraseDictionaryMultiModel0= >> -5.21045 -5.04877 -4.71131 -4.66382 ||| -1.70337 >> 0 ||| funds ||| LexicalReordering0= -3.1355 0 0 0 0 0 Distortion0= 0 >> LM0= -11.3753 WordPenalty0= -1 PhrasePenalty0= 1 >> PhraseDictionaryMultiModel0= -10.8209 -10.6835 -5.14555 -5.73388 ||| >> -1.77009 >> 0 ||| known as a ||| LexicalReordering0= -3.1355 0 0 0 0 0 Distortion0= >> 0 LM0= -58.8877 WordPenalty0= -3 PhrasePenalty0= 1 >> PhraseDictionaryMultiModel0= -4.42285 -11.9339 -5.14555 -18.0392 ||| >> -1.89152 >> 0 ||| as a ||| LexicalReordering0= -3.1355 0 0 0 0 0 Distortion0= 0 LM0= >> -35.5353 WordPenalty0= -2 PhrasePenalty0= 1 PhraseDictionaryMultiModel0= >> -9.34698 -11.9339 -5.14555 -9.14874 ||| -1.89159 >> >> and with the older version of Moses: >> >> 0 ||| funds ||| LexicalReordering0= -3.1355 0 0 0 0 0 Distortion0= 0 >> LM0= -11.3753 WordPenalty0= -1 PhrasePenalty0= 1 >> PhraseDictionaryMultiModel0= -2.52548 -2.52544 -2.45544 -2.48609 ||| >> -0.815668 >> 0 ||| as a ||| LexicalReordering0= -3.1355 0 0 0 0 0 Distortion0= 0 LM0= >> -35.5353 WordPenalty0= -2 PhrasePenalty0= 1 PhraseDictionaryMultiModel0= >> -2.52464 -2.52565 -2.45544 -2.5244 ||| -0.953799 >> 0 ||| as ||| LexicalReordering0= -3.1355 0 0 0 0 0 Distortion0= 0 LM0= >> -34.1633 WordPenalty0= -1 PhrasePenalty0= 1 PhraseDictionaryMultiModel0= >> -2.5256 -2.52565 -2.45544 -2.48609 ||| -1.07254 >> 0 ||| known as a ||| LexicalReordering0= -3.1355 0 0 0 0 0 Distortion0= >> 0 LM0= -58.8877 WordPenalty0= -3 PhrasePenalty0= 1 >> PhraseDictionaryMultiModel0= -2.38597 -2.52565 -2.45544 -2.52573 ||| >> -1.07536 >> 0 ||| is known as a ||| LexicalReordering0= -3.1355 0 0 0 0 0 >> Distortion0= 0 LM0= -80.8518 WordPenalty0= -4 PhrasePenalty0= 1 >> PhraseDictionaryMultiModel0= -2.37158 -2.52565 -2.45544 -2.52573 ||| >> -1.18753 >> >> This looks very strange. The only difference is in the phrase-table >> scores. Do you have any idea of what is going on? The only possibility >> which come to mind is maybe a different handling of the >> PhraseDictionaryMultiModel feature. >> The moses.ini is in attachment. >> >> Best regards, >> >> Vito >> >> >> >> -- >> *M**. Vito MANDORINO -- Chief Scientist* >> >> >> [image: Description : Description : lingua_custodia_final full logo] >> >> *The Translation Trustee* >> >> *1, Place Charles de Gaulle, **78180 Montigny-le-Bretonneux* >> >> *Tel : +33 1 30 44 04 23 Mobile : +33 6 84 65 68 89 >> <%2B33%206%2084%2065%2068%2089>* >> >> *Email :* * <[email protected]> >> <[email protected]>[email protected] >> <[email protected]>* >> >> *Website :* * <http://www.linguacustodia.com/>www.linguacustodia.com >> <http://www.linguacustodia.com> - www.thetranslationtrustee.com >> <http://www.thetranslationtrustee.com/>* >> >> >> _______________________________________________ >> Moses-support mailing >> [email protected]http://mailman.mit.edu/mailman/listinfo/moses-support >> >> >> -- >> Hieu Hoanghttp://www.hoang.co.uk/hieu >> >> > > > -- > *M**. Vito MANDORINO -- Chief Scientist* > > > [image: Description : Description : lingua_custodia_final full logo] > > *The Translation Trustee* > > *1, Place Charles de Gaulle, **78180 Montigny-le-Bretonneux* > > *Tel : +33 1 30 44 04 23 Mobile : +33 6 84 65 68 89 > <%2B33%206%2084%2065%2068%2089>* > > *Email :* * > <[email protected]>[email protected] > <[email protected]>* > > *Website :* *www.linguacustodia.com <http://www.linguacustodia.com/> - > www.thetranslationtrustee.com <http://www.thetranslationtrustee.com/>* > > > This body part will be downloaded on demand. > > > > The University of Edinburgh is a charitable body, registered in > Scotland, with registration number SC005336. > > -- *M**. Vito MANDORINO -- Chief Scientist* [image: Description : Description : lingua_custodia_final full logo] *The Translation Trustee* *1, Place Charles de Gaulle, **78180 Montigny-le-Bretonneux* *Tel : +33 1 30 44 04 23 Mobile : +33 6 84 65 68 89* *Email :* *[email protected] <[email protected]>* *Website :* *www.linguacustodia.com <http://www.linguacustodia.com/> - www.thetranslationtrustee.com <http://www.thetranslationtrustee.com/>*
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