広告配信に機械学習を活かす / TD tech talk - 20160425

by KAWASAKI Yasukazu

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ػցֶशΛ޿ࠂ഑৴ʹ ׆͔͢ '!/$PNNVOJDBUJPOT ઒࡚ɹହҰ .PO 5SFBTVSF%BUB5FDI5BML

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ΞδΣϯμ w ࣗݾ঺հ w '!/ͷ঺հ w OFOEͷ঺հ w ػցֶशͷ׆༻΁ͷಓͷΓ

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ࣗݾ঺հ w ઒࡚ɹହҰʢ͔Θ͖͞ɹ΍͔ͣ͢ʣ w '!/৘ใՊֶٕज़ݚڀॴɹॴଐ w d͓ఱؾձࣾ w dΠϯϑϥΤϯδχΞ w dݱ৬ όοΫάϥϯυ͸ఱؾ༧ใ

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'!/$PNNVOJDBUJPOT w ΞϑϦΟΤΠταʔϏεϓϩόΠμʔʢ"OFUʣ w ΞυωοτϫʔΫʢOFOEʣ

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ద੾ͳʰਓʱʹ ద੾ͳʰ৔ॴʱͰ ద੾ͳʰ޿ࠂʱΛ ग़͍ͨ͠ʂ

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࢖͑Δσʔλ w ΠϯϓϨογϣϯϩά w ΫϦοΫϩά w ίϯόʔδϣϯϩά w ༧ΊΘ͔͍ͬͯΔ͍͔ͭ͘ͷ৘ใ

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࢖͑Δσʔλ w جຊతʹʰͲͷ޿ࠂʱΛʰͲ͜ʱͰɺʰ͍ͭʱʰԿ ͷσόΠεʱͰΈ͔ͨ

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࢖͑Δσʔλ ୭ ͍ͭ αΠτ ޿ࠂ σόΠε JNQSFTTJPO ̋ ̋ ̋ ̋ ̋ DMJDL ̋ ̋ ̋ ̋ ̋ DPOWFSTJPO ̋ ̋ ̋ ̋ ̋

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࢖͑Δσʔλ w ʰ୭ʱˠͦͷਓΛͳΜͱ͔ϢχʔΫʹࣝผͰ͖Δͩ ͚ͷ*% w શମͰ͸ɺJNQSFTTJPO͸๲େɺDMJDL͸ͦΕͳΓɺ DPOWFSTJPO͸΄΅ͳ͠ w ϩάʹ͸͍Ζ͍Ζॻ͔ΕͯΔ͚Ͳ·ͱΊΔͱҙ֎ͱ ৘ใྔগͳ͍ʁ

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ߟ͑ͨ͜ͱ w ͱΓ͋͑ͣஉঁਪఆ͘Β͍͸͓͖͍ͯͨ͠ w ࿮͸ଟ͗ͯ͢ΈΔͷΊΜͲ͍ w ޿ࠂͷछྨͳΒखಈͰϥϕϦϯάͰ͖Δ਺ʁ w ͖ͬͱίϯόʔδϣϯ͍ͯ͠Δ޿ࠂͱੑผͷؒʹ͸ ૬͕ؔ͋Δ͸ͣʂ

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w ਺ઍͷ޿ࠂΛͱΓ͋͑ͣखಈͰ෼ྨ͠·ͨ͠ʂʢ্ ͕࢘ɻɻɻɻɻʣ

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ӈԟࠨԟͯ͠ΈΔ w άϧʔϓΛม͑ͯΈΔ w ख๏Λม͑ͯΈΔ w ᮢ஋Λม͑ͯΈΔ

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ӈԟࠨԟͯ͠ΈΔ ΞΫγϣϯήʔϜ ઓུήʔϜ ϞϯελʔήʔϜ ίεϝ ঁੑ޲͚ٻਓ உੑ ঁੑ

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ӈԟࠨԟͯ͠ΈΔ ΞΫγϣϯήʔϜ ઓུήʔϜ ίεϝ ঁੑ޲͚ٻਓ ΩϡϨʔγϣϯΞϓϦ உੑ ঁੑ ϞϯελʔήʔϜ

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ӈԟࠨԟͯ͠ΈΔ w άϧʔϓΛม͑ͯΈΔ w ख๏Λม͑ͯΈΔ w ᮢ஋Λม͑ͯΈΔ

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ӈԟࠨԟͯ͠ΈΔ w ͍Ζ͍Ζͳख๏Λࢼͯ͠ΈΔ w 1BTTJWF"HSFTTJWF 1" w "EBQUJWF3FHVMBSJ[BUJPOPG8FJHIU7FDUPST "308 w 4PGU$POpEFDF8FJHIUFE 4$8 ͍ Ζ Μ ͳ ઢ ܗ ෼ ྨ ث ʂ

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ઢܗ෼ྨث

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ӈԟࠨԟͯ͠ΈΔ ੺Լઢ෦Λॻ͖׵͑Δ͜ͱͰख๏Λม͑Δ

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IJWFNBMMศར w σʔλநग़͸)JWF2-΄΅42- w ख๏ͷ੾Γସ͑͸͍͍ͩͨؔ਺ͷॻ͖׵͑ఔ౓ͷख ؒ

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ӈԟࠨԟͯ͠ΈΔ w άϧʔϓΛม͑ͯΈΔ w ख๏Λม͑ͯΈΔ w ᮢ஋Λม͑ͯΈΔ

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ӈԟࠨԟͯ͠ΈΔ ਪఆ஋

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ݶքΛײͨ͡ࠓ೔͜ͷ͝Ζ w ࢼߦࡨޡ͕ଟ͗ͯ͢ਏָ͍͍͠ɻ w Ͳ͏ʹ΋͜͏ʹ΋݁Ռ͕҆ఆ͠ͳ͍ɻ ʼ3BOEPN'PSFTU͕͋ΔΑʂʻ

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ܾఆ໦ ΓΜ͝ ͳ͠ ͍͔͢ όφφ

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ܾఆ໦ ੺͍ʁ ΓΜ͝ :FT /P ؙ͍ʁ ͳ͠ :FT /P ࣶʑʁ :FT /P ͍͔͢ όφφ

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3BOEPN'PSFTU ੺͍ʁ ΓΜ͝ :FT /P ؙ͍ʁ ͳ͠ :FT /P ࣶʑʁ :FT /P ͍͔͢ όφφ ºɹͨ͘͞Μʂ ଟ਺ܾͰܾఆʂ

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3BOEPN'PSFTU ݁Ռ͕҆ఆͨ͠ʂ

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l࣌͸ྲྀΕͯ5%ྗ͕޲্ͨ͠ʂz JNQSFTTJPOϩάΛѻ͑ΔΑ͏ʹͳͬͨʂ

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࢖͑Δσʔλ ୭ ͍ͭ αΠτ ޿ࠂ σόΠε JNQSFTTJPO ̋ ̋ ̋ ̋ ̋ DMJDL ̋ ̋ ̋ ̋ ̋ DPOFSTJPO ̋ ̋ ̋ ̋ ̋

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΋͏Ұ౓ߟ͑ͳ͓͢ w உঁਪఆͦΕͳΓʹຬ଍͕ͩɺਫ਼౓ɺӡ༻ίετʹ ຬ଍͕ߦ͔ͳ͍ w େମ্࢘೔݄͕ফඅ͞Ε͍ͯΔ͠ɺ͜Ε͔Β΋ ফඅ͞ΕΔ w ਫ਼౓໘Ͱ͸ɺӦۀ͞ΜʹඍົͳإΛ͞ΕΔ

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΋͏Ұ౓ߟ͑ͳ͓͢ w ਫ਼౓໘͸ͱ΋͔͘ʢʁʣɺӡ༻ͷखؒ͸ݮΒ͍ͨ͠ʂ w Ͱ͖Ε͹ɺ5SFBTVSF%BUBͷεέδϡʔϧδϣϒͰ ࡁ·͍ͤͨʂ

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΋͏Ұ౓ߟ͑ͳ͓͢ w ࿦จΛಡΈړͬͯΔͱɺͲ͏΋ɺϩδεςΟοΫճ ؼΛ࢖͏͜ͱ͕ଟͦ͏ͳΠϝʔδΛ๊͘ w ·ͩɺϩδεςΟοΫճؼ͸΍͍ͬͯͳ͔ͬͨ

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΋͏Ұ౓ߟ͑ͳ͓͢ w Ͳ͜ͰɺԿΛݟ͔ͨʢJNQSFTTJPOϩάʣʹ͸ɺਓ ͷझຯझ޲Λڧ͘൓ө͍ͯ͠Δ

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΋͏Ұ౓ߟ͑ͳ͓͢ உੑ༻Խহ඼αΠτ ݟ͍ͯΔ

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΋͏Ұ౓ߟ͑ͳ͓͢ உੑ༻Խহ඼αΠτ ݟ͍ͯΔ உੑ༻Խহ඼ʹڵຯ͕͋Δ͔΋஌Εͳ͍

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΋͏Ұ౓ߟ͑ͳ͓͢ உੑ༻Խহ඼αΠτ ΞΫγϣϯήʔϜͷ޿ࠂ DMJDL

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΋͏Ұ౓ߟ͑ͳ͓͢ உੑ༻Խহ඼αΠτ ΞΫγϣϯήʔϜͷ޿ࠂ DMJDL ख͕׈ͬͨʂ  ඞͣ͠΋ڵຯʹͭͳ͕Βͳ͍

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΋͏Ұ౓ߟ͑ͳ͓͢ உੑ༻Խহ඼αΠτ ΞΫγϣϯήʔϜͷ޿ࠂ DPOWFSTJPO

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΋͏Ұ౓ߟ͑ͳ͓͢ உੑ༻Խহ඼αΠτ ΞΫγϣϯήʔϜͷ޿ࠂ DPOWFSTJPO ΞΫγϣϯήʔϜʹڵຯ͕͋Δʂ Ͱ΋ɺઈର਺͕গͳ͍

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΋͏Ұ౓ߟ͑ͳ͓͢ w Ͳ͜ͰɺԿΛݟ͔ͨʢJNQSFTTJPOϩάʣʹ͸ɺਓ ͷझຯझ޲Λڧ͘൓ө͍ͯ͠Δ w ͔͠͠ɺͲ͜ͰԿΛݟ͍ͯΔ͔ΛਓྗͰ۠ผͤ͞Δ ͷ͸ͭΒ͗͢Δ w ͲͷαΠτΛݟ͔ͨΛಛ௃ྔͱͯ͠ػցֶशͤͯ͞ Έͨ

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Ͱ͖ͨʂ

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৽ख๏ͩͱʁ w ܭࢉ࣌ؒͷ୹ॖ w ࣄલͷϥϕϧ෇ͷഇࢭ w ਫ਼౓͸ͪΐͬ͜ͱ޲্ʂʂ

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·ͱΊ w ݁ՌͰҰتҰ༕ָͯ͠͠Ή w ݁ߏ஍ຯͳ࡞ۀ΋ଟͯ͘ਏָ͍͍͠ɻ w ܕ͕ग़དྷ্͕ΔͱͦΕʹ౰ͯ͸ΊΔ͚ͩͰ΋݁ߏ͏ ·͍͘͘ w ཧ࿦Λਅ໘໨ʹ௥͍͔͚Δͷ͸ͦΕͳΓʹਏ͍

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