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成長を止めない機械学習のやり方 / Don't stop 'til you get enough (data).

成長を止めない機械学習のやり方 / Don't stop 'til you get enough (data).

Yuichiro Someya

March 23, 2018
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  1. ੒௕ΛࢭΊͳ͍

    ػցֶशͷ΍Γํ
    ΫοΫύουגࣜձࣾɹછ୩༔Ұ࿠
    ."/"#*:"

    View Slide

  2. ࣗݾ঺հ
    છ୩༔Ұ࿠

    View Slide

  3. View Slide

  4. Ϩγϐ਺ɿສ඼Ҏ্
    ࠃ಺ͷ݄ؒར༻ऀ਺ɿ໿ສਓ

    View Slide

  5. ରԠݴޠɿݴޠϲࠃ
    ւ֎ͷ݄ؒར༻ऀ਺ɿສਓҎ্

    View Slide

  6. ΫοΫύουݚڀ։ൃ෦
    ೥݄ʹൃ଍ ࢲ͕഑ଐ͞Εͨͷ΋ಉ࣌ظ

    ౰࣌͸໊ͷϝϯόʔ
    ೥݄ݱࡏ͸ࠃ಺ʹ໊ւ֎ʹ໊

    View Slide

  7. ྉཧ͖Ζ͘
    ৞ΈࠐΈχϡʔϥϧωοτϫʔΫ
    ʹΑΔྉཧը૾ͷࣗಈೝࣝ
    εϚʔτϑΥϯͷࣸਅͷ಺ɺ
    ྉཧࣸਅΛࣗಈతʹऩूه࿥

    View Slide

  8. ྉཧ͖Ζ͘
    ສਓҎ্ͷϢʔβʔ͕ར༻
    ສຕҎ্ͷྉཧࣸਅΛه࿥
    ೥݄೔ݱࡏ

    View Slide

  9. ͦͷଞػցֶशϓϩδΣΫτ
    ը૾෼ੳʹΑΔϨγϐͷ෼ྨ
    ࡐྉ໊ͷਖ਼نԽ ে༉ γϣʔϢ>

    ϑΟʔυόοΫͷࣗಈλά෇͚

    FUD

    View Slide

  10. લஔ͖

    View Slide

  11. l લུ
    ʮ࣭໰ʯ·Ͱ͸͍͔ͳ͍͕ؾʹͳ͍ͬͯΔ͜ͱɺ

    ʮճ౴ʯΛ஌Γ͍͕ͨͳ͔ͳ͔஌Δػձ͕ͳ͔ͬͨ͜ͱɻ


    ͦ͏͍ͬͨٙ໰Λ೔ຊத͔ΒूΊɺ

    ΧϯϑΝϨϯεΛ௨ͯ͡ղܾࡦΛݟग़͠ɺ஌ܙΛੜΈग़͢ɻ

    ͜Ε͕ɺ."/"#*:"Λ։࠵͢Δ૝͍Ͱ͢ɻz
    IUUQTNBOBCJZBUFDI

    View Slide

  12. l લུ
    ʮ࣭໰ʯ·Ͱ͸͍͔ͳ͍͕ؾʹͳ͍ͬͯΔ͜ͱɺ

    ʮճ౴ʯΛ஌Γ͍͕ͨͳ͔ͳ͔஌Δػձ͕ͳ͔ͬͨ͜ͱɻ


    ͦ͏͍ͬͨٙ໰Λ೔ຊத͔ΒूΊɺ

    ΧϯϑΝϨϯεΛ௨ͯ͡ղܾࡦΛݟग़͠ɺ஌ܙΛੜΈग़͢ɻ

    ͜Ε͕ɺ."/"#*:"Λ։࠵͢Δ૝͍Ͱ͢ɻz
    IUUQTNBOBCJZBUFDI
    ՝୊ͷڞ༗
    ղܾࡦͷྻڍͱ෼ੳ

    View Slide

  13. lຊηογϣϯͰ͸·ͣػցֶशΛऔΓೖΕͨ૊৫ʹ͓͚Δ

    Ձ஋૑଄Λ્֐͋Δ͍͸ಷԽͤ͞Δز͔ͭͷཁҼΛࢦఠ͠ɺ

    ͦΕΒͷཁҼʹ͍ͭͯ։ൃج൫΍ΤϯδχΞϦϯάɺ

    νʔϜߏ੒౳༷ʑͳ֯౓͔Βߟ࡯͠·͢ɻ·ͨ͞Βʹɺ

    ͦͷΑ͏ͳ՝୊ʹର͢ΔΫοΫύουͷऔΓ૊ΈΛ঺հ͠·͢ɻz

    View Slide

  14. lຊηογϣϯͰ͸·ͣػցֶशΛऔΓೖΕͨ૊৫ʹ͓͚Δ

    Ձ஋૑଄Λ્֐͋Δ͍͸ಷԽͤ͞Δز͔ͭͷཁҼΛࢦఠ͠ɺ

    ͦΕΒͷཁҼʹ͍ͭͯ։ൃج൫΍ΤϯδχΞϦϯάɺ

    νʔϜߏ੒౳༷ʑͳ֯౓͔Βߟ࡯͠·͢ɻ·ͨ͞Βʹɺ

    ͦͷΑ͏ͳ՝୊ʹର͢ΔΫοΫύουͷऔΓ૊ΈΛ঺հ͠·͢ɻz
    ՝୊ͷڞ༗
    ղܾࡦͷྻڍͱ෼ੳ

    View Slide

  15. ʰ੒௕ΛࢭΊͳ͍ػցֶशͷ΍Γํʱ
    ػցֶशʹऔΓ૊Ήݱ৔ʹ͓͚Δ՝୊Λࢦఠ͠ɺ෼ੳ͠·͢ɻ

    View Slide

  16. ΞδΣϯμ
    ͸͡Ίʹਓ޻஌ೳϒʔϜͱݬ໓ظ
    ੒௕ΛࢭΊͳ͍ػցֶशͷ΍Γํʙ૊৫ɾνʔϜฤʙ
    αʔϏε։ൃͱػցֶश
    ػցֶशϓϩδΣΫτ
    ੒௕ΛࢭΊͳ͍ػցֶशͷ΍Γํʙݸਓฤʙ
    ૯߹֨ಆٕͱͯ͠ͷػցֶश

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  17. ਓ޻஌ೳϒʔϜͱݬ໓ظ

    View Slide

  18. ਓ޻஌ೳϒʔϜ
    ʰୈ࣍ਓ޻஌ೳϒʔϜʱ
    ը૾෼ྨ෼໺ʹ͓͚Δਂ૚ֶशͷ੒ՌΛ͖͔͚ͬͱ͢Δ
    ਓ޻஌ೳ࣮ݱͷखஈͷ̍ͭͱͯ͠ػցֶश΁ͷ౤ࢿʗظ଴΋ߴ·Δ
    ϋʔυ΢ΣΞʗιϑτ΢ΣΞʹ͔͔ΘΒͣ͋ΒΏΔྖҬʹԠ༻͞ΕΑ
    ͏ͱ͍ͯ͠Δ
    ΫοΫύουͷ༷ͳαʔϏε։ൃͷݱ৔΋ྫ֎Ͱ͸ͳ͍

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  19. IUUQXXXHBSUOFSDPKQQSFTTIUNMQSIUNM

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  20. ϒʔϜ͔Βݬ໓ظ΁
    "*ʹ͸ظ଴͕ա౓ʹൃ೤ͨ͠ͷͪʰౙʱ͕๚ΕΔͱ͍͏ྺ࢙͕͋Δ
    ݬ໓ظΛ৐Γӽ͍ͯͨ͘Ίʹݱ৔ͷզʑ͕͢΂͖͜ͱ
    ʰ੒௕ΛࢭΊͳ͍ػցֶशͷ΍Γํʱ
    ࠓճ͸ɺαʔϏε։ൃݱ৔ͱͯ͠ͷΫοΫύουͱ͍͏؀ڥͰಘΒΕ
    ͨ஌ݟΛத৺ʹɺ͜ͷ՝୊ʹ͍ͭͯߟ͍͖͑ͯ·͢

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  21. ੒௕ΛࢭΊͳ͍ػցֶशͷ΍Γํ
    ૊৫ɾνʔϜฤ

    View Slide

  22. ΞδΣϯμ
    ͸͡Ίʹਓ޻஌ೳϒʔϜͱݬ໓ظ
    ੒௕ΛࢭΊͳ͍ػցֶशͷ΍Γํʙ૊৫ɾνʔϜฤʙ
    αʔϏε։ൃͱػցֶश
    ػցֶशϓϩδΣΫτ
    ੒௕ΛࢭΊͳ͍ػցֶशͷ΍Γํʙݸਓฤʙ
    ૯߹֨ಆٕͱͯ͠ͷػցֶश
    ͸͡Ίʹਓ޻஌ೳϒʔϜͱݬ໓ظ
    ੒௕ΛࢭΊͳ͍ػցֶशͷ΍Γํʙ૊৫ɾνʔϜฤʙ
    αʔϏε։ൃͱػցֶश
    ػցֶशϓϩδΣΫτ
    ੒௕ΛࢭΊͳ͍ػցֶशͷ΍Γํʙݸਓฤʙ
    ૯߹֨ಆٕͱͯ͠ͷػցֶश

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  23. αʔϏε։ൃͱػցֶश
    αʔϏε։ൃͰػցֶशΛ࢖͍͍ͨͱ͍͏χʔζ͕૿͍͑ͯΔ
    ਓ޻஌ೳϒʔϜʹґΔͱ͜Ζ͕େ͖͍ ଟ෼

    ʰػցֶशΛ࢖͏ʱͱ͸ʁ

    View Slide

  24. ՝୊ൃݟ

    ΰʔϧઃఆ
    σʔλऩू
    σʔλՃ޻

    ෼ੳ &%"

    ֶश
    ධՁݕূ
    ຊ൪
    ධՁݕূ

    View Slide

  25. ࢖͏
    ࡞Δ
    ՝୊ൃݟ

    ΰʔϧઃఆ
    σʔλऩू
    σʔλՃ޻

    ෼ੳ &%"

    ֶश
    ධՁݕূ
    ຊ൪
    ධՁݕূ
    σ
    ϓ
    ϩ
    Π

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  26. ྫϞσϧͷ"1*Խʹඞཁͳ΋ͷ
    ֶशࡁΈϞσϧ ͷEVNQ
    NPEFM\QC I ^

    "1* BQQQZ

    )551 T
    &OEQPJOU QSFEJDU JOGPͱ͔

    ϞσϧͷಡΈࠐΈͱ*0ϋϯυϥ
    ࡞ۀ
    طଘγεςϜʗΠϯϑϥ΁ͷΠϯςάϨʔγϣϯ

    -#ɺϞχλϦϯάɺ%/4౳ʑ
    ࣮ߦ؀ڥ %PDLFSpMF

    View Slide

  27. ྫϞσϧͷ"1*Խʹඞཁͳ΋ͷ
    ֶशࡁΈϞσϧ ͷEVNQ
    NPEFM\QC I ^

    "1* BQQQZ

    )551 T
    &OEQPJOU QSFEJDU JOGPͱ͔

    ϞσϧͷಡΈࠐΈͱ*0ϋϯυϥ
    ࡞ۀ
    طଘγεςϜʗΠϯϑϥ΁ͷΠϯςάϨʔγϣϯ

    -#ɺϞχλϦϯάɺ%/4౳ʑ
    ࣮ߦ؀ڥ %PDLFSpMF

    ػցֶशϞσϧͷσϓϩΠʹ͸

    खؒͱ͕͔͔࣌ؒΔ

    View Slide

  28. def is_food_image(self, image_io):
    image = Image.open(image_io)
    result = self.classifier.infer(image)
    return result == Category.food
    ར༻ྫྉཧ͖Ζ͘ͷ৔߹
    ύοέʔδԽ͞ΕͨػցֶशϞσϧͷݺͼग़͠

    ͋Δ͍͸҉໧ͳ"1*ίʔϧ

    View Slide

  29. def is_food_image(self, image_io):
    image = Image.open(image_io)
    result = self.classifier.infer(image)
    return result == Category.food
    ྫྉཧ͖Ζ͘ͷ৔߹
    ύοέʔδԽ͞ΕͨػցֶशϞσϧͷݺͼग़͠

    ͋Δ͍͸҉໧ͳ"1*ίʔϧ

    έʔεʹΑΔ͕
    αʔϏε։ൃͱ͍͏จ຺ʹ͓͍ͯ

    ػցֶशϞσϧ͸ίʔυͰ࣮૷͞ΕͨϩδοΫ

    ͱಉ౳ʹѻΘΕ͏Δ

    View Slide

  30. ࢖͏
    ࡞Δ
    Ϩγϐ෼ྨثͷΧςΰϦʹ

    ʰຑം౾෗ʱΛ଍ͯ͠Έ͍ͨ
    िؒ͘Β͍͔͔Δͳ
    Ϛδ͔ʂ
    if category == 'ΧϨʔ':
    foo()
    + elif category == 'ຑം౾෗':
    + bar()
    ՝୊ൃݟ

    ΰʔϧઃఆ
    σʔλऩू
    σʔλՃ޻

    ෼ੳ &%"

    ֶश
    ධՁݕূ
    ຊ൪
    ධՁݕূ

    View Slide

  31. αʔϏε։ൃͱϞσϧͷ։ൃʗσϓϩΠ
    ͷεϐʔυײʹΪϟοϓ͕͋Δ

    View Slide

  32. Ͳ͏͢Ε͹ʁ
    ਓࡐ഑ஔͷ࠷దԽ

    View Slide

  33. ࢖͏
    ࡞Δ
    Ϩγϐ෼ྨثͷΧςΰϦʹ

    ʰຑം౾෗ʱΛ଍ͯ͠Έ͍ͨ
    िؒ͘Β͍͔͔Δͳ
    Ϛδ͔ʂ
    if category == 'ΧϨʔ':
    foo()
    + elif category == 'ຑം౾෗':
    + bar()
    ՝୊ൃݟ

    ΰʔϧઃఆ
    σʔλऩू
    σʔλՃ޻

    ෼ੳ &%"

    ֶश
    ධՁݕূ
    ຊ൪
    ධՁݕূ

    View Slide

  34. ࢖͏
    ࡞Δ
    Ϩγϐ෼ྨثͷΧςΰϦʹ

    ʰຑം౾෗ʱΛ଍ͯ͠Έ͍ͨ
    िؒ͘Β͍͔͔Δͳ
    Ϛδ͔ʂ
    if category == 'ΧϨʔ':
    foo()
    + elif category == 'ຑം౾෗':
    + bar()
    ՝୊ൃݟ

    ΰʔϧઃఆ
    σʔλऩू
    σʔλՃ޻

    ෼ੳ &%"

    ֶश
    ධՁݕূ
    ຊ൪
    ධՁݕূ

    View Slide

  35. ਓࡐ഑ஔͷ࠷దԽ
    αʔϏε։ൃʹػցֶशΛԠ༻͢Δ͜ͱʹෆ׳Εͳݱ৔ͷ৔߹

    αʔϏε։ൃʹٻΊΒΕΔ։ൃεϐʔυͱ

    ػցֶशϞσϧͷ։ൃͱσϓϩΠʹ͔͔Δ࣌ؒ
    ྆ऀʹΪϟοϓ͕͋Δɺͱ͍͏໰୊Λڞ༗ͯ͠าΈدΔ
    ྫ͑͹ਓతϦιʔεͷ഑ஔΛݟ௚ͯ͠ΈΔ
    ྫɿαʔϏε։ൃଆͷΤϯδχΞ͕ϞσϧͷσϓϩΠΛख఻͏

    View Slide

  36. Ͳ͏͢Ε͹ʁ
    ਓࡐ഑ஔͷ࠷దԽ
    औΓ૊Ή໰୊ͷݟ௚͠
    Ϟσϧ։ൃʗσϓϩΠͷޮ཰Խ

    View Slide

  37. Ͳ͏͢Ε͹ʁ
    ਓࡐ഑ஔͷ࠷దԽ
    औΓ૊Ή໰୊ͷݟ௚͠
    Ϟσϧ։ൃʗσϓϩΠͷޮ཰Խ
    ։ൃεϐʔυͷҧ͍΍ػցֶशಛ༗ͷίετΛՃຯ্ͨ͠Ͱɺ
    ػցֶशΛར༻ͯ͠औΓ૊Ή΂͖ͳͷ͔ߟ͑ͳ͓͢
    IUUQTSFTFBSDIHPPHMFDPNQVCTQVCIUNM
    ʰػցֶश͸ٕज़తෛ࠴ͷߴརି͠ ҙ༁
    ʱ

    View Slide

  38. Ͳ͏͢Ε͹ʁ
    ਓࡐ഑ஔͷ࠷దԽ
    औΓ૊Ή໰୊ͷݟ௚͠
    Ϟσϧ։ൃʗσϓϩΠͷޮ཰Խ

    View Slide

  39. Ϟσϧ։ൃʗσϓϩΠͷޮ཰Խ
    ։ൃσʔλͷ෼ੳɺ࣮ݧɺϞσϧͷֶश
    σϓϩΠύοέʔδԽɺ"1*Խ

    View Slide

  40. Ϟσϧ։ൃʗσϓϩΠͷޮ཰Խ
    ։ൃσʔλͷ෼ੳɺ࣮ݧɺϞσϧͷֶश
    σϓϩΠύοέʔδԽɺ"1*Խ

    View Slide

  41. ػցֶशج൫
    ػցֶशʹؔΘΔ࣮ݧ΍։ൃͷεϐʔυΛ্͛Δҝͷج൫
    ΫοΫύουݚڀ։ൃ෦͸෦ࣗ਎Ͱੵۃతʹվળ͍ͯ͠Δ
    IUUQTTQFBLFSEFDLDPNBZFNPTNBDIJOF
    MFBSOJOHQMBUGPSNBUDPPLQBE
    IUUQTTQFBLFSEFDLDPNBZFNPTBDDFMFSBUF
    NBDIJOFMFBSOJOHXJUIBXT

    View Slide

  42. ΦϯσϚϯυ(16࣮ݧ؀ڥ

    View Slide

  43. ΦϯσϚϯυ(16࣮ݧ؀ڥ
    ւ֎΋ؚΊ໊ͷϝϯόʔ͕͍Δ
    ෳ਺ͷϓϩδΣΫτʹෳ਺ͷਓ͕औΓ૊Ή
    ࣮ݧ༻ͷܭࢉػ؀ڥΛͲͷΑ͏ʹ༻ҙ͢Δ͔
    $IBUCPUܦ༝ͰىಈఀࢭՄೳͳΦϯσϚϯυ(16࣮ݧ؀ڥ

    View Slide

  44. ʰ࣮ݧ༻Πϯελϯε࡞ͬͯʱ
    ઃఆࡁΈΠϯελϯεͷ

    εφοϓγϣοτ ".*

    ATTIBZFNPTXPSLCFODIEOTDPNQBOZA
    $SFBUF




    View Slide

  45. ʰ࣮ݧ༻Πϯελϯε࡞ͬͯʱ
    ઃఆࡁΈΠϯελϯεͷ

    εφοϓγϣοτ ".*

    ATTIBZFNPTXPSLCFODIEOTDPNQBOZA
    $SFBUF




    IUUQTTQFBLFSEFDLDPNBZFNPTNBDIJOF
    MFBSOJOHQMBUGPSNBUDPPLQBE
    ৄ͘͠͸

    View Slide

  46. ϓϩδΣΫτςϯϓϨʔτ
    ʹΑΔ࣮ݧ࠶ݱੑͷ޲্

    View Slide

  47. ྫͷϓϩδΣΫτͷ

    ௥࣮ݧ͕͍ͨ͠
    OPUFCPPLͱεΫϦϓτ͸ϨϙδτϦʹɺ
    σʔλ͸ࠓ͸खݩʹ͔͠ͳ͍΍ʜ
    ΍͹͍

    View Slide

  48. ࣮ݧ࠶ݱੑͷ௿Լ
    ͍͍ͭͭ࠶ݱੑͷͳ͍ঢ়ଶΛ࡞ͬͯ͠·͏
    ϫʔΫϑϩʔ؅ཧͱ͔େֻ͔Γͳͷ͸ͪΐͬͱʜ

    View Slide

  49. $PPLJFDVUUFSʹΑΔςϯϓϨʔτԽ
    ϓϩδΣΫτͷςϯϓϨʔτԽ
    SVCZʹ͸CVOEMFS͕͋Δ͚Ͳʜ
    IUUQTHJUIVCDPNBVESFZSDPPLJFDVUUFS
    1ZUIPO +JOKB
    ੡ͷ൚༻ͳϓϩδΣΫτςϯϓϨʔτੜ੒πʔϧ
    ಠࣗͷςϯϓϨʔτΛ૊Ή͜ͱ͕ग़དྷɺσʔλαΠΤϯε༻ͷ෺΋͋Δ
    IUUQTHJUIVCDPNESJWFOEBUBDPPLJFDVUUFSEBUBTDJFODF

    View Slide

  50. ESJWFOEBUBDPPLJFDVUUFSEBUBTDJFODF
    A.BLFpMFA֤छศརUBSHFUͱ͔ઃఆ஋ͱ͔
    ASFRVJSFNFOUTUYUAґଘϥΠϒϥϦͷϦετ
    ֤छط໿σΟϨΫτϦ
    ATSDEBUBA ATSDNPEFMAͦΕͧΕσʔλͷੜ੒ʗલॲཧ༻ɺ
    Ϟσϧͷֶश༻εΫϦϓτΛஔ͘
    AEBUBAHJUJHOPSF͞ΕΔɺ.BLFpMFͷUBSHFUͰ4ͱTZOD

    View Slide

  51. ྫͷϓϩδΣΫτͷ

    ௥࣮ݧ͕͍ͨ͠
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  53. Ϟσϧ։ൃʗσϓϩΠͷޮ཰Խ
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  54. Ϟσϧ։ൃʗσϓϩΠͷޮ཰Խ
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  55. ػցֶशϞσϧͷσϓϩΠ
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