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クックパッドにおける研究の活用と支援
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j.harashima
June 20, 2015
11
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クックパッドにおける研究の活用と支援
j.harashima
June 20, 2015
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Transcript
ΫοΫύουʹ͓͚Δݚڀͷ׆༻ͱࢧԉ ΫοΫύουגࣜձࣾ ݪౡ७
ൃද֓ཁ ΫοΫύουͰɺ࠷৽ͷݚڀΛΩϟονΞοϓͯ͠ϓϩμΫτʹ׆༻͢Δ ͱͱʹɺֶज़తͳݚڀΛαϙʔτͯ͠ΞΧσϛΞʹߩݙ͢Δ͜ͱʹྗΛ ೖΕ͍ͯ·͢ɻຊൃදͰɺΫοΫύουʹ͓͚Δ࠷৽ͷݚڀͷ׆༻ࣄྫͱ ֶज़తͳݚڀΛࢧԉ͢ΔͨΊͷऔΓΈʹ͍ͭͯհ͠·͢ɻ ΫοΫύου ݚڀ
ݪౡ७ ɾΤϯδχΞʢݕࡧɾฤ෦ʣ ɹɾ ZFBSTPGEFWFMPQNFOUFYQFSJFODF ɾത࢜ʢใֶʣ ɹɾ ZFBSTPGSFTFBSDIFYQFSJFODF ɾઐ ɹɾࣗવݴޠॲཧɺใݕࡧ
ΫοΫύου
ར༻ঢ়گ IUUQTJOGPDPPLQBEDPNpOBODJBM@IJHIMJHIU
Ϩγϐ IUUQTJOGPDPPLQBEDPNpOBODJBM@IJHIMJHIU
ΫοΫύουʹ͓͚Δݚڀͷ׆༻ࣄྫ
ΫοΫύουʁ ʮ3VCZPO3BJMTͱ͔ɺΤϯδχΞϦϯά͕Μͬͯͦ͏ɻ ɹ͚Ͳɺݚڀʹڵຯͳ͍Ͱ͠ΐʁʯ
ΫοΫύουͷݚڀࣄ ɾࠓ݄ɺݚڀྖҬΛઐʹѻ͏νʔϜ͕ൃ͠·ͨ͠ ɹɾՌ͜Ε͔Β ɾ༷ʑͳݚڀΛϓϩμΫτʹ׆༻͍ͯ͠·͢ ɹɾϨγϐͷࣗಈྨ ɹɾͷݻ༗දݱೝࣝ ɹɾίϯςϯπͷϨίϝϯσʔγϣϯ
Ϩγϐͷࣗಈྨ
Ϩγϐͷࣗಈྨ
ɾ47.ʹΑΔྨ ɹɾ-*#-*/&"3Λར༻ ɹɾૉੑൿີ ɾϢʔβʹΑΔਪન݁ՌΛ׆༻ ɹɾਖ਼ղσʔλΛߏங͢ΔखؒΛলུ ɾຖશϨγϐʢສʣΛྨ FHεʔϓͱͯ͠ਪન͞ΕͨϨγϐΛɹ ɹ ɹ εʔϓͷਖ਼ղσʔλͱͯ͠ར༻
Ϩγϐͷࣗಈྨ
Ϩγϐͷࣗಈྨ
ϖʔδԼʹ ϑΟϧλʔ Ϩγϐͷࣗಈྨ
ͷݻ༗දݱೝࣝ
ಛചใʢళฮ͔Βߘʣ ݻ༗දݱೝࣝ ͷݻ༗දݱೝࣝ ͨ·Ͷ͗ݸ ԁ ͨ·Ͷ͗υϨογϯά ԁ ͨ·Ͷ͗ݸ
ྔ ໊ ͨ·Ͷ͗υϨογϯά ໊ ʮͨ·Ͷ͗ʯͰΠϯσΩγϯά ʮͨ·Ͷ͗υϨογϯάʯͰΠϯσΩγϯά 0OMJOF Ϣʔβͷۙลͷళฮ͔Β ໊ʮͨ·Ͷ͗ʯΛݕࡧ
ɾ$3'ʹΑΔݻ༗දݱೝࣝ ɹɾ$3'TVJUFΛར༻ ɾछྨͷϥϕϧΛఆٛ ɹɾFH໊ɺ࢈ɺྔɺ෦Ґ ɾਓखͰਖ਼ղσʔλΛߏங ɹɾܗଶૉղੳͱݻ༗දݱೝࣝͷਖ਼ղσʔλΛߏங ɹɾ֤ϞσϧΛʹ࠷దԽ ͷݻ༗දݱೝࣝ
ݻ༗දݱೝࣝͷਖ਼ղ ܗଶૉղੳͷਖ਼ղ ͷݻ༗දݱೝࣝ
ઍ༿࢈ʹΜ͡Μຊ ࠃ࢈ಲʢϞϞɾΧλʣ ࢈ ྔ ઍ༿࢈ʹΜ͡Μຊ ࠃ࢈ಲʢϞϞɾΧλʣ ෦Ґ ໊ ෦Ґ ࢈
໊ ͷݻ༗දݱೝࣝ ͚ͨͷ͜ͷཬ ͚ͨͷ͜ͷཬ ໊
ΫΤϦʹԠͯ͡࠷దͳίϯςϯπΛදࣔ ίϯςϯπͷ࠷దԽ
ίϯςϯπͷ࠷దԽ ݙཱΛग़ͨ͠Βศརʁ Ϣʔβ͞ΜʹΑΔ ͓͢͢ΊϨγϐͱ͔ ྉཧͷίπͳΜͯͲ͏ʁ 6*͕ෳࡶԽ ৽͍͠ίϯςϯπΛग़ͦ͏ʂ χϡʔεɺಈըɺ
ɾଟόϯσΟοτ ɹɾ୳ࡧͱ׆༻Λ͍͚ͯใुΛ࠷େԽ ɹɹɾ୳ࡧɿใΛऩू͢ΔͨΊʹΛબ ɹɹɾ׆༻ɿऩूͨ͠ʹج͍ͮͯΛબ ɹɾ୳ࡧͱ׆༻τϨʔυΦϑ ɾίϯςΩετ͖ଟόϯσΟοτ ɹɾͷใु͕ίϯςΩετʹΑͬͯҧ͏ʢFHࠂͷ$53ʣ ɹɾίϯςΩετΛૉੑͰදݱͯ͠ɺใु͕࠷େͱͳΔΑ͏ʹॏΈΛֶश ɹɾίϯςΩετ͝ͱʹΛબ
ίϯςϯπͷ࠷దԽ
ɾίϯςΩετ͖ଟόϯσΟοτʹΑΔίϯςϯπ࠷దԽ ɹɾ7PXQBM8BCCJUΛར༻ ɾʹίϯςϯπ ɹɾFHݙཱɺهࣄɺྉཧಈը ɾใुʹ$53 ɹɾϢʔβʹظ͞ΕΔ͕׆༻࣌ʹબ͞ΕΔ ɾͷબ ɹɾ୳ࡧ࣌ɿҰ෦17ͰϥϯμϜʹબ ɹɾ׆༻࣌ɿ$53࠷େͱظ͞ΕΔͷΛબ 10/9
10/10% 10/11% 10/9 10/10% 10/11% m/d m/d md% % md% % construct%training% and%test%data m/d% % %m’/d’% mdm’d’ % % Amazon%S3 10/9% % 10/11% … … predict%ac:ons learn%model% % % Offline explore exploit log*show/click*events Treasure*Data Online ίϯςϯπͷ࠷దԽ
ɾ$53ഒ ɹɾ ׆༻࣌ͷ$53 ୳ࡧ࣌ͷ$53 ɾબ͞Εͨίϯςϯπʢׅހ֤ΫϦΤΠςΟϒͷ$53ʣ ྫྷౚཛ هࣄʢʣ ͚ͨͷ͜ ๐ཱͯੜΫϦʔϜ؆୯
جຊࣝʢʣ ྉཧಈըʢʣ ίϯςϯπͷ࠷దԽ
ɾΫοΫύουʹ͓͚Δݚڀͷ׆༻ࣄྫ ɹɾϨγϐͷࣗಈྨ ɹɾͷݻ༗දݱೝࣝ ɹɾίϯςϯπͷ࠷దԽ ɾࠓޙͷల ɹɾػց༁ XFBSFIJSJOH ɹɾը૾ೝࣝʁ લͷ·ͱΊ IUUQSFDSVJUDPPLQBEDPN
ֶज़తͳݚڀΛࢧԉ͢ΔऔΓΈ
Α͋͘Δ૬ஊ ʮϨγϐͷσʔλΛ͍͍ͨʂݚڀ͕ਐ·ͳ͍ʂʂʂʯ
૬ஊ͝ͱʹఏڙɻ͚Ͳ ɾݸผରԠ͕େม ɹɾඞཁͳσʔλͷฉ͖औΓ ɹɾར༻ܖͷࡦఆɾక݁ ɹɾσʔλͷ४උɾૹ ɾྉཧʹؔ͢Δݚڀ͕͕Βͳ͍ ɹɾ૬ஊ͕͋ΕσʔλΛఏڙ͍ͯ͠Δ͜ͱΛ୭Βͳ͍ ɹɾ݁ՌɺϓϩμΫτʹ׆༻Ͱ͖ΔݚڀՌ͕ࣦΘΕΔ
σʔλެ։
ɾݚڀऀ ɹɾϨγϐσʔλ͕ར༻Մೳ ɹɾڞ௨ͷσʔληοτΛ௨ͯ͠ɺઌߦݚڀͱͷൺֱ͕༰қʹ ɾΫοΫύου ɹɾݸผରԠͷख͕ؒݮগʢσʔλɾར༻ܖͷҰຊԽʣ ɹɾྉཧʹؔ͢Δݚڀ͕૿Ճ 8JO8JO
ެ։σʔλʢϨγϐʣ ɾλΠτϧ ɾ֓ཁ ɾࡐྉ ɾखॱ ɾίπɾϙΠϯτ ɾ͜ͷϨγϐͷੜཱ͍ͪ ɾͭ͘ΕΆ ɾFUD
ެ։σʔλʢݙཱʣ ɾλΠτϧ ɾ͜ͷݙཱͷϙΠϯτ ɾௐཧ࣌ؒ ɾஈऔΓͷίπ ɾओࡊ ɾ෭ࡊ ɾࢀߟʹͳͬͨʂ ɾ͜ͷݙཱͷओͳ৯ࡐδϟϯϧγʔϯ
ར༻ํ๏ ɾ/**Λ௨ͯ͡ར༻Մೳ ɹɾIUUQXXXOJJBDKQDTDFOUFSJESDPPLQBEDPPLQBEIUNM ɾެతͳݚڀػؔͷํ͕ར༻Մೳ ɹɾاۀͷݚڀػؔͷํผ్͝૬ஊ͍ͩ͘͞ ɾར༻نҎԼͷϖʔδ ɹɾIUUQTDPPLQBEDPNUFSNTDPPLQBE@EBUB
ਃखॱ
ਃखॱ
ίϯτϦϏϡʔγϣϯ ɾެ։͔Β࢛ϲ݄Ͱݚڀࣨʹఏڙ ɹɾجຊతʹେֶ͔Βͷਃʢͨ·ʹߴઐͳͲ͔Βʣ ɾاۀ͔Βෳͷਃ ɹɾఏڙՄೳ͔Ҋ݅࣍ୈʢݚڀతͰͳ͍Ҋ݅μϝʣ ɾࠓޙɺڞ௨ͷσʔληοτͱͯ͠ར༻Մೳ ɹɾઌߦݚڀͱͷൺֱ͕༰қʹ
ϋοΧιϯʢ༨ஊʣ ४උͷख͕ؒল͚ͨ
ɾֶज़తͳݚڀΛࢧԉ͢ΔऔΓΈ ɹɾΫοΫύουσʔλͷެ։ ɹɾݚڀࣨʹఏڙࡁΈ ɾࠓޙͷల ɹɾը૾ެ։ʢ༧ఆʣ ɹɾ৯ϝσΟΞݚڀձͷ։࠵ʢ݄ʣ ޙͷ·ͱΊ
·ͱΊ
·ͱΊ ຊൃදͰɺΫοΫύουʹ͓͚Δ࠷৽ͷݚڀͷ׆༻ࣄྫͱֶज़తͳݚڀΛ ࢧԉ͢ΔͨΊͷऔΓΈʹ͍ͭͯհ͠·ͨ͠ɻΫοΫύουͰɺࠓ݄ɺ ݚڀྖҬΛઐʹѻ͏νʔϜൃ͠·ͨ͠ɻࠓޙɺΑΓҰݚڀྖҬʹྗ ΛೖΕ͍ͯ͘༧ఆͰ͢ɻ ΫοΫύου ݚڀ