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クックパッドと機械学習/uec-aix-seminar
j.harashima
September 26, 2018
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クックパッドと機械学習/uec-aix-seminar
j.harashima
September 26, 2018
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Transcript
ୈճిؾ௨৴େֶ"*9ηϛφʔ ΫοΫύουͱػցֶश ΫοΫύουגࣜձࣾݪౡ७
ࠓͷτʔΫ ɾࣗݾհ ɾձࣾհ ɾݚڀ։ൃ෦հ ɾΫοΫύουͱࣗવݴޠॲཧ ɾΫοΫύουͱը૾ॲཧ ɾΫοΫύουͱΦʔϓϯαΠΤϯε ɾ·ͱΊ
ࠓͷτʔΫ ɾࣗݾհ ɾձࣾհ ɾݚڀ։ൃ෦հ ɾΫοΫύουͱࣗવݴޠॲཧ ɾΫοΫύουͱը૾ॲཧ ɾΫοΫύουͱΦʔϓϯαΠΤϯε ɾ·ͱΊ
݄ ݄ ژେֶࠇڮɾՏݪݚڀࣨଐ ΫοΫύουೖࣾɺαʔϏε։ൃ෦ଐ ത࢜ʢใֶʣऔಘ ΤϯδχΞʢ3VCZPO3BJMTػցֶशʣ ݄ Ϧαʔνϟʔʢࣗવݴޠॲཧใݕࡧʣ ݪౡ७ ݄
Ϛωʔδϟʔʢਓࣄใࡒʜʣ ݚڀ։ൃ෦৽ઃɺಉ෦ଐ
ΫοΫύουͰͷ͓ࣄ
ΫοΫύουͰͷ͓ࣄ
ΫοΫύουͰͷ͓ࣄ
จ 5XP4UFQ7BMJEBUJPOJO$IBSBDUFSCBTFE*OHSFEJFOU/PSNBMJ[BUJPO $&" -FBSOJOH'PPE"QQFBSBODFCZB4VQFSWJTJPOXJUI3FDJQF5FYU $&" $PPLQBE*NBHF%BUBTFU"O*NBHF$PMMFDUJPOBT*OGSBTUSVDUVSFGPS'PPE3FTFBSDI 4*(*3
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˞ଠࣈ͕ࣗୈҰஶऀͷͷɻେֶ࣌ͷͷؚΉɻ
ࠓͷτʔΫ ɾࣗݾհ ɾձࣾհ ɾݚڀ։ൃ෦հ ɾΫοΫύουͱࣗવݴޠॲཧ ɾΫοΫύουͱը૾ॲཧ ɾΫοΫύουͱΦʔϓϯαΠΤϯε ɾ·ͱΊ
ΫοΫύου Πϯλʔωοτ্ͰϨγϐͷߘɾݕࡧ͕Ͱ͖Δ ຊ࠷େͷྉཧϨγϐαʔϏε
Ԋֵ ݄ ༗ݶձࣾίΠϯʢݱΫοΫύουגࣜձࣾʣઃཱ ݄ ݄ ݄ ݄ ݄ ݄ ϨγϐͷߘɾݕࡧαʔϏεLJUDIFO!DPJO։࢝
ΫοΫύουʹαʔϏε໊มߋ ݄ ϓϨϛΞϜαʔϏε։࢝ Ϛβʔζ্ ౦ূҰ෦ʹࢢมߋ ϓϨϛΞϜαʔϏεձһສਓಥഁ ݄ ւ֎ల։Λຊ֨Խ ઃཱप
ɾλΠτϧ ɾ֓ཁ ɾࡐྉ ɾखॱ ɾίπɾϙΠϯτ ɾ͜ͷϨγϐͷੜཱ͍ͪ ɾͭ͘ΕΆ ɾʜ Ϩγϐ
ݙཱ ɾλΠτϧ ɾ͜ͷݙཱͷϙΠϯτ ɾௐཧ࣌ؒ ɾஈऔΓͷίπ ɾओࡊ ɾ෭ࡊ ɾࢀߟʹͳͬͨʂ ɾ͜ͷݙཱͷओͳ৯ࡐδϟϯϧγʔϯ ɾʜ
ݕࡧ݁Ռ ৽ணॱ ਓؾॱ
࣌ར༻ऀ ݄ؒར༻ऀʢࠃʣ ݄ؒར༻ऀʢւ֎ʣ Ϩγϐ
UP#͚αʔϏε
DPPLQBETUVEJP
LPNFSDP
NBSU
ച্ߏ
2ձࣾͰྉཧ͢Δͬͯຊʁ
"ຊͰ͢
ࠓͷτʔΫ ɾࣗݾհ ɾձࣾհ ɾݚڀ։ൃ෦հ ɾΫοΫύουͱࣗવݴޠॲཧ ɾΫοΫύουͱը૾ॲཧ ɾΫοΫύουͱΦʔϓϯαΠΤϯε ɾ·ͱΊ
෦͖ εϚʔτΩονϯάϧʔϓ ػցֶशάϧʔϓ ݚڀ։ൃ෦
ؔ࿈αʔϏε ͓·͔ͤཧ ०ͷࡊϨγϐ ϝΠϯʹ͑ΔϨγϐ͕ ͙͢ʹݟ͔ͭΔ "MFYBεΩϧ ͍͍ͨࡐྉ͚ͩͰ ͙͢ʹ࡞ΕΔਓؾͷϨγϐఏҊ ྉཧ͖Ζ͘ ࡱΔ͚ͩͰهʹʂ
͋ͳͨͷ͓ྉཧࣸਅΛ ࣗಈͰཧ Ϩγϐͷͦͷઌ ͓͍͍͠εϚʔτΩονϯ 0J$Z
ԻʹΑΔྉཧิॿ
ΦʔϓϯαΠΤϯε
ϝσΟΞऔࡐଟ
จͪΒ΄Βͱ
ࠓͷτʔΫ ɾࣗݾհ ɾձࣾհ ɾݚڀ։ൃ෦հ ɾΫοΫύουͱࣗવݴޠॲཧ ɾΫοΫύουͱը૾ॲཧ ɾΫοΫύουͱΦʔϓϯαΠΤϯε ɾ·ͱΊ
ΫοΫύουͱࣗવݴޠॲཧ ɾϨγϐͷղੳ ɾϨγϐͷݕࡧ ɾಉٛදݱͷೝࣝ ɾࡐྉ໊ͷਖ਼نԽ ɾखॱͷྨ ɾϨγϐͷྨ ɾҙݟͷྨ ɾϨγϐͷ༁ ػցֶश
Ϩγϐͷղੳ ಲͷʹΜʹ͘ে༉ম͖ ͷ ʹΜʹ͘ ে༉ ໊ࢺ ໊ࢺ ॿࢺ ໊ࢺ c
c c c ম͘ ಲ ম͖ ಈࢺ ܗଶૉղੳ
Ϩγϐͷݕࡧ
ಉٛදݱͷೝࣝ ʮΰʔϠʯ ʮ͝ʔʯ ʮۤӝʯ ʹ ʹ
ࡐྉ໊ͷਖ਼نԽ ϨγϐதͷදهΛΫοΫύουͰͷදදهʹ ਖ਼نԽ ˒ΈΓΜ ૈ൨͖ࠇމᑦ ͠ʢ͓ΈͰʣ ΈΓΜ ͋Βͼ͖ࠇ͜͠ΐ͏ ͠ ه߸ͷআڈ
දه༳Εͷղফ ׅހදݱͷআڈ ͦͷଞɺิใͷআڈಉٛදݱͷೝࣝɺ௲Γؒҧ͍ͷमਖ਼ͳͲ ʢFH ͓ΈͰ㾐ന͝·ˠ͍Γ͝·ɺੜ͘ΓʔϜˠੜΫϦʔϜʣ
&ODPEFS 4QMJUUIFPSJHJOBMTUSJOH FH ˒ে༉ JOUPDIBSBDUFST FH <˒ ে ༉>
5BLFUIFDIBSBDUFSTBTBOJOQVUBOEHFOFSBUFBWFDUPSGPSJU %FDPEFS (FOFSBUFBXPSE BDBOPOJDBMGPSN FH ͠ΐ͏Ώ GSPNUIFWFDUPS "CFBNTFBSDIDBOCFVTFEUPpOECFUUFSOPSNBMJ[BUJPOT ˒ ে ༉ ΐ ͠ ͏ Ώ &08 &08 ΐ ͠ ͏ Ώ ˒TPZTBVDF TPZTBVDF ࡐྉ໊ͷਖ਼نԽ
खॱͷྨ ϨγϐͷಡΈ্͛ͷαʔϏεͷͨΊʹɺखॱͱඇखॱΛࣝผ Ϟσϧ ɾϩδεςΟοΫճؼ σʔλ ɾ ݅ ਖ਼ղ ɾ
खॱͷྨ
ΧςΰϦछྨ ɾछྨʢFH ྉཧɺڕྉཧɺʜʣ ɾௐཧ๏ʢFH ࣽɺম͖ɺʜʣ ɾδϟϯϧʢFH ɺ༸ɺதɺʜʣ Ϟσϧ ɾ47.3'ʢλάʹґΔɻҎԼಉ༷ʣ ֶशσʔλ
ɾϨγϐΧςΰϦͷσʔλ ɾΞϊςʔλʔ͕λά͚ͨ͠σʔλ ਫ਼ ɾେମʙ Ϩγϐͷྨ
Ϣʔβ͕ϒοΫϚʔΫͨ͠ϨγϐΛࣗಈͰྨ FH ʮ͓՛ࢠʯΛΫϦοΫ Ϩγϐͷྨ
ҙݟͷྨ ʮඒຯ͘͠Ͱ͖·ͨ͠ʂʯ ϙδςΟϒ ΧςΰϦશ෦Ͱݸ ʢྨث͕ݸʣ Ϣʔβʔ͔ΒͷҙݟΛࣗಈͰྨ
ҙݟͷྨ
#BIEBOBVFUBM ͷϨγϐͷର༁ίʔύεʢӳʣ "UUFOUJPO.PEFMΛֶशɾੳ<4BUPFUBM > ༁ྫ ɾ֖·ͨΞϧϛϗΠϧͰམͱ֖͠Λͯ͠தՐͰৠ͠ম͖ʹ ɹ͠·͢ɻ ɹɹɹɹɹɹɹɹɹɹɹɹɹˣ ɹDPWFSXJUIBMJEPSBMVNJOVNGPJM
BOETUFBNUIF ɹDIJDLFOPONFEJVNIFBU ʢ˞αʔϏεԽͷ༧ఆ͋Γ·ͤΜʣ Ϩγϐͷ༁
ຊޠͷϨγϐΛχϡʔϥϧ.5Ͱӳޠʹ༁ ػց༁ ʢ˞αʔϏεԽͷ༧ఆ͋Γ·ͤΜʣ Ϩγϐͷ༁
ࠓͷτʔΫ ɾࣗݾհ ɾձࣾհ ɾݚڀ։ൃ෦հ ɾΫοΫύουͱࣗવݴޠॲཧ ɾΫοΫύουͱը૾ॲཧ ɾΫοΫύουͱΦʔϓϯαΠΤϯε ɾ·ͱΊ
ΫοΫύουͱը૾ॲཧ ɾྉཧࣸਅͷݕग़ ɾඇྉཧࣸਅͷݕग़ ɾྉཧࣸਅͷྨ ɾࡐྉࣸਅͷྨ ػցֶश
ྉཧ ඇྉཧ ඇྉཧ ඇྉཧ ਫ਼࠶ݱ ྉཧࣸਅͷݕग़ ϢʔβͷεϚʔτϑΥϯ͔ΒྉཧࣸਅΛਂֶशͰݕग़
WFS ɾ$B⒎F/FU ɾྉཧPSඇྉཧͷೋྨ WFS ɾ*ODFQUJPOW ɾྉཧ ২ ʜ PSඇྉཧͷଟྨ WFS
ɾ*ODFQUJPOW QBUDIFEDMBTTJpDBUJPO ɾྉཧPSඇྉཧͷೋྨ ֶशσʔλ ɾਖ਼ྫɿΫοΫύουͷϨγϐͷը૾ ɾෛྫɿϥΠηϯεϑϦʔͷछʑͷը૾ WFSͷೝࣝ݁Ռ ྉཧࣸਅͷݕग़
https://twitter.com/ohmycorgi/status/867745923719364609 https://twitter.com/teenybiscuit/status/707727863571582978 㾎͕Ϟσϧ͕ྉཧͱఆͨࣸ͠ਅ ྉཧࣸਅͷݕग़
ඇྉཧ ྉཧ ྉཧ ྉཧ ඇྉཧࣸਅͷݕग़ Ϣʔβʔ͕ߘͨ͠ը૾͔ΒඇྉཧࣸਅΛݕग़ ྉཧࣸਅͷݕग़ͱಉ͡ϞσϧΛར༻ ϢʔβʔʹΨΠυϥΠϯΛ௨ ˞ඇྉཧͷ߹ɺՈϖοτͷөΓࠐΈ͕ଟ͍
ʜ ϋϯόʔά ΦϜϥΠε ྉཧࣸਅͷྨ εϚʔτϑΥϯ͔Βநग़ͨ͠ྉཧࣸਅΛछྨʹྨ
૾Λ͑ΔʁτϚτϨλεཛͷ̏৭ εʔϓ ؆୯τϚτεʔϓ ʢϛωετϩʔωʣ ৽ۄͶ͗ͱτϚτͷαϥμ ࢦͤσϦ෩ʂϨλεͱτϚτͷα ϥμ γϯϓϧʂτϚτͱେࠜͰ෩ ྫྷ੩ύελ τϚτͱ৽ۄͶ͗ͷͬ͞
ͺΓϚϦω τϚτ ࡐྉࣸਅͷྨ Ϣʔβʔ͕ࡱӨͨ͠ࡐྉࣸਅΛछྨʹྨ
ࠓͷτʔΫ ɾࣗݾհ ɾձࣾհ ɾݚڀ։ൃ෦հ ɾΫοΫύουͱࣗવݴޠॲཧ ɾΫοΫύουͱը૾ॲཧ ɾΫοΫύουͱΦʔϓϯαΠΤϯε ɾ·ͱΊ
ΫοΫύουͱΦʔϓϯαΠΤϯε ɾϨγϐσʔλͷެ։ ɾୈճ"*νϟϨϯδίϯςετ ɾ+4"*$VQ ɾ8"5 ػցֶश
Ϩγϐσʔλͷެ։
ɾλΠτϧ ɾ֓ཁ ɾࡐྉ ɾखॱ ɾίπɾϙΠϯτ ɾ͜ͷϨγϐͷੜཱ͍ͪ ɾͭ͘ΕΆ ɾʜ Ϩγϐ
ݙཱ ɾλΠτϧ ɾ͜ͷݙཱͷϙΠϯτ ɾௐཧ࣌ؒ ɾஈऔΓͷίπ ɾओࡊ ɾ෭ࡊ ɾࢀߟʹͳͬͨʂ ɾ͜ͷݙཱͷओͳ৯ࡐδϟϯϧγʔϯ ɾʜ
ར༻ঢ়گ ެ։લʢʙ݄ʣ େֶݚڀࣨ ެ։ޙʢ݄ʣ େֶݚڀࣨ
ୈճ"*νϟϨϯδίϯςετ
λεΫ ྉཧݕग़෦ ɾࣸਅதͷྉཧྖҬΛݕग़ ྉཧྨ෦ ɾྉཧࣸਅΛΫϥεʹྨ ͦ͏ΊΜ ͏ͲΜ
ݒۚ
Ԡืਓ ྉཧݕग़෦ ྉཧྨ෦
+4"*$VQ ࡐྉࣸਅͷྨ ɾΧςΰϦʢFH ۄೢʣ ɾશ෦Ͱ ຕ
Ԡืਓ
8"5
ࠓͷτʔΫ ɾࣗݾհ ɾձࣾհ ɾݚڀ։ൃ෦հ ɾΫοΫύουͱࣗવݴޠॲཧ ɾΫοΫύουͱը૾ॲཧ ɾΫοΫύουͱΦʔϓϯαΠΤϯε ɾ·ͱΊ
ΫοΫύουͱػցֶश ΫοΫύουͱࣗવݴޠॲཧ ɾϨγϐͷྨɺࡐྉͷਖ਼نԽɺखॱͷྨɺҙݟͷྨɺʜ ΫοΫύουͱը૾ॲཧ ɾྉཧࣸਅͷݕग़ɺඇྉཧࣸਅͷݕग़ɺྉཧࣸਅͷྨɺʜ ΫοΫύουͱΦʔϓϯαΠΤϯε ɾ"*νϟϨϯδίϯςετɺ+4"*$VQɺ8"5ɺʜ
ࠓޙͷల։ ΫοΫύουͱࣗવݴޠॲཧ ɾܗଶૉղੳͷυϝΠϯదԠɺղੳ༻ࣙॻͷࣗಈߏஙɺʜ ΫοΫύουͱը૾ॲཧ ɾྉཧࣸਅͷϑΟϧλʔղ૾ɺʜ ΫοΫύουͱΦʔϓϯαΠΤϯε ɾ৽͍͠σʔληοτͷެ։ʁ
͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ɻ