Understanding_Back-Translation_at_scale.pdf

Transcript

1. -JUFSBUVSFSFWJFX
   6OEFSTUBOEJOH#BDL5SBOTMBUJPOBU4DBMF
   4FSHFZ&EVOPW .ZMF0UU .JDIBFM"VMJ %BWJE(SBOHJFS
   &./-1 QBHFTr

   /BHBPLB6OJWFSTJUZPG5FDIOPMPHZ5BLVNJ.BSVZBNB
   

   View Slide

2. ֓ཁ
   ⾣ٯ຋༁Λ࢖ͬͯɺٖࣅతͳύϥϨϧίʔύεΛੜ੒
   ⾣ٯ຋༁ͷࡍʹ͸ɺग़ྗଆʹଟ༷ੑΛ࣋ͨͤΔ͜ͱ͕ॏཁ
   ⾣8.5Ͱ4UBUFPGUIFBSUΛୡ੒ #-&6QU
   
   

   View Slide

3. ⾣ػց຋༁ͷੑೳ͸ɺσʔλαΠζʹେ͖͘Өڹ͞ΕΔ
   ⾣ύϥϨϧίʔύε͕গͳ͍৔߹ɺͲ͏͢΂͖͔
   ⾣େن໛ͳ୯ݴޠίʔύεΛٯ຋༁ͯ͠ɺσʔλΛ֦ு
   ͸͡Ίʹ
   

   View Slide

4. ٯ຋༁ʹΑΔσʔλ֦ு
   4PVSDFTJEF 5BSHFUTJEF
   1BSBMMFMDPSQVT 1BSBMMFMDPSQVT
   .POPMJOHVBM
   $PSQVT
   #BDLXBSE
   NPEFM
   5SBJOJOH
   

   View Slide

5. ٯ຋༁ʹΑΔσʔλ֦ு
   4PVSDFTJEF 5BSHFUTJEF
   1BSBMMFMDPSQVT 1BSBMMFMDPSQVT
   .POPMJOHVBM
   $PSQVT
   #BDLXBSE
   NPEFM
   

   View Slide

6. ٯ຋༁ʹΑΔσʔλ֦ு
   4PVSDFTJEF 5BSHFUTJEF
   1BSBMMFMDPSQVT 1BSBMMFMDPSQVT
   .POPMJOHVBM
   $PSQVT
   #BDLXBSE
   NPEFM
   4ZOUIFUJDEBUB
   (FOFSBUJPO
   

   View Slide

7. ٯ຋༁ʹΑΔσʔλ֦ு
   4ZOUIFUJDEBUB
   4PVSDFTJEF 5BSHFUTJEF
   1BSBMMFMDPSQVT 1BSBMMFMDPSQVT
   .POPMJOHVBM
   $PSQVT
   'PSXBSE
   NPEFM
   5SBJOJOH
   

   View Slide

8. ٯ຋༁ʹΑΔσʔλ֦ு
   4ZOUIFUJDEBUB
   5FTUEBUB
   4PVSDFTJEF 5BSHFUTJEF
   1BSBMMFMDPSQVT 1BSBMMFMDPSQVT
   .POPMJOHVBM
   $PSQVT
   'PSXBSE
   NPEFM
   

   View Slide

9. ٯ຋༁ʹΑΔσʔλ֦ு
   4ZOUIFUJDEBUB
   5FTUEBUB
   4PVSDFTJEF 5BSHFUTJEF
   1BSBMMFMDPSQVT 1BSBMMFMDPSQVT
   .POPMJOHVBM
   $PSQVT
   3FTVMU
   'PSXBSE
   NPEFM
   

   View Slide

10. ຋༁Ϟσϧ
    ⾣5SBOTGPSNFSΛར༻
    &ODPEFS %FDPEFS %FDPEFS
    %FDPEFS
    4PVSDFTFOUFODF #04 : :
    

    View Slide

11. ٖࣅσʔλͷੜ੒ํ๏
    ⾣CFBNTFBSDI΍HSFFEZTFBSDIΛར༻͞Ε͍ͯͨ
    ⾣Ϟσϧͷग़ྗ෼෍ͷ࠷େࣄޙ֬཰ ."1
    ʹ஫໨ͨ͠ख๏
    ⾣."1ਪఆΛٯ຋༁ʹ༻͍Δͱɺਅͷσʔλ෼෍ͱ͸ҟͳͬͨ
    ଟ༷ੑͷ௿͍ٖࣅσʔλʹͭͳ͕Δ
    

    View Slide

12. ٖࣅσʔλͷੜ੒ํ๏
    ⾣ٖࣅσʔλʹଟ༷ੑΛ࣋ͨͤΔͨΊʹɺ࣍ͷख๏ΛఏҊ
    TBNQMJOH
    Ϟσϧͷग़ྗ෼෍ʹैͬͯɺαϯϓϦϯά
    UPQ
    ग़ྗ֬཰্Ґ୯ޠΛબ୒ɾ࠶ਖ਼نԽ͠ɺαϯϓϦϯά
    

    View Slide

13. ٖࣅσʔλͷੜ੒ํ๏
    ⾣ٖࣅσʔλʹଟ༷ੑΛ࣋ͨͤΔͨΊʹɺ࣍ͷख๏ΛఏҊ
    #FBNOPJTF
    CFBNTFBSDIʹՃ͑ɺ࣍ͷछྨͷϊΠζΛՃ͑Δ
    
    ֬཰Ͱɺग़ྗ୯ޠΛ࡟আ
    
    ֬཰Ͱɺग़ྗ୯ޠΛ#-"/,ʹஔ׵
    
    Ұ༷෼෍ʹैͬͯɺ୯ޠΛೖΕସ͑Δ
    

    View Slide

14. σʔληοτ
    ⾣1BSB$SBXMDPSQVT &O%F
    .TFOUFODFQBJST
    ⾣OFXTDSBXMEBUB %F
    .TFOUFODFT
    ⾣OFXTUFTU
    

    View Slide

15. ࣮ݧ݁Ռ
    ⾣ٯ຋༁ʹΑΔσʔλ֦ுͷޮՌ
    ɾCJUFYU .
    ٖࣅσʔλ
    ɾCFBN HSFFEZΑΓ΋
    TBNQMJOH CFBNOPJTFͷํ͕
    ޮՌతͳٖࣅσʔλͰ͋Δ
    

    View Slide

16. ࣮ݧ݁Ռ
    ⾣ٯ຋༁ʹΑΔσʔλ֦ுͷޮՌ
    

    View Slide

17. ࣮ݧ݁Ռ
    ⾣ͳͥϊΠζΛՃ͑ͨํ͕ޮՌతͳͷ͔ʁ
    ɾHSFFEZ CFBNͷσʔλ͸
    τϨʔχϯάʹద͍ͯ͠ͳ͍
    ɾHSFFEZ CFBNʹΑͬͯੜ੒͞Εͨ
    σʔλ͸TBNQMJOH OPJTFΑΓ΋؆୯
    

    View Slide

18. ࣮ݧ݁Ռ
    ⾣ͳͥϊΠζΛՃ͑ͨํ͕ޮՌతͳͷ͔ʁ
    ɾHSFFEZ CFBNͷσʔλ͸
    τϨʔχϯάʹద͍ͯ͠ͳ͍
    ɾHSFFEZ CFBNʹΑͬͯੜ੒͞Εͨ
    σʔλ͸TBNQMJOH OPJTFΑΓ΋؆୯
    

    View Slide

19. ࣮ݧ݁Ռ
    ⾣ͳͥϊΠζΛՃ͑ͨํ͕ޮՌతͳͷ͔ʁ
    

    View Slide

20. ࣮ݧ݁Ռ
    ⾣CJUFYUͱٖࣅσʔλͷൺ཰
    ɾCJUFYU.TFOUFODFQBJST
    ɾCJUFYU .
    ٖࣅσʔλ .
    
    ˠCJUFYUVQTBNQMFSBUJP
    

    View Slide

21. ࣮ݧ݁Ռ
    ⾣CJUFYUͱٖࣅσʔλͷൺ཰
    ɾHSFFEZ CFBN͸ٖࣅσʔλͷൺ཰ʹ
    Өڹ͞ΕΔ
    ˠσʔλͷྔͰଟ༷ੑΛΧόʔ
    ɾTBNQMJOH OPJTF͸ଟ༷ੑ͕͋ΔͨΊ
    ٖࣅσʔλൺ཰ͷӨڹ͕গͳ͍
    

    View Slide

22. ·ͱΊ
    ⾣ٯ຋༁Λ࢖ͬͯɺٖࣅతͳύϥϨϧίʔύεΛੜ੒
    ⾣CFBN HSFFEZΑΓ΋ɺTBNQMJOH΍OPJTFͷΑ͏ʹ
    σʔλʹଟ༷ੑΛٖ࣋ͨͤͨࣅσʔλͷํ͕ޮՌత
    ⾣8.5Ͱ4UBUFPGUIFBSUΛୡ੒ #-&6QU
    
    

    View Slide