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論文紹介: Improving Implicit Feedback-Based Recomme...
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Shuhei Goda
November 22, 2023
Technology
0
550
論文紹介: Improving Implicit Feedback-Based Recommendation through Multi-Behavior Alignment(Xin Xin et al., 2023)
ウォンテッドリー社内勉強会~推薦論文読み会~
https://wantedly.connpass.com/event/301781/
Shuhei Goda
November 22, 2023
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Transcript
©2023 Wantedly, Inc. จհɿImproving Implicit Feedback-Based Recommendation through Multi-Behavior Alignment
ΥϯςουϦʔࣾษڧձ~ਪનจಡΈձ~ Nov. 22 2023 - ߹ాपฏʢΥϯςουϦʔגࣜձࣾʣ Xin Xin et al., 2023 https://dl.acm.org/doi/10.1145/3539618.3591697
©2023 Wantedly, Inc. ࣗݾհ ໊લɿ ߹ా पฏ(Shuhei Goda) ॴଐͱׂɿ
ɾΥϯςουϦʔגࣜձࣾ(2019~) ɾਪનνʔϜϦʔμʔ ɾML Tech Lead & Product Manager Kaggle Tierɿ Kaggle Competitions Grandmaster @hakubishin3 @jy_msc @shuheigoda
©2023 Wantedly, Inc. αϚϦʔ ෳͷߦಈใΛΞϥΠϝϯτͯ͠ਅͷᅂΛਪఆ͢Δख๏ΛఏҊͨ͠จ • ϞνϕʔγϣϯɿෳͷߦಈσʔλΛֶशʹ͏͜ͱͰɺ֤ߦಈσʔλͷܽΛิ͍͍ͨ • ՝ɿ •
ߦಈσʔλͷؒʹΪϟοϓ͕͋Δ • औಘ͕༰қͳߦಈσʔλ΄ͲϊΠζ͕େ͖͍ • ղܾํ๏ɿ • ϢʔβʔͷਅͷᅂΛજࡏมͱ͠ɺͦΕʹج͍ͮͨߦಈ݁Ռ͕؍ଌมͱΈͳ͢ • જࡏมΛڬΜͰɺෳͷߦಈσʔλΛదʹΞϥΠϝϯτ͢Δ
©2023 Wantedly, Inc. ຊݚڀͷϞνϕʔγϣϯ ҉తϑΟʔυόοΫΛ׆༻ͯ͠ɺߴਫ਼ͳਪનΛߦ͍͍ͨ • ҉తϑΟʔυόοΫʢimplicit feedbackʣͷྫɿΫϦοΫɺΧʔτͷՃɺߪೖ • ໌ࣔతϑΟʔυόοΫʢexplicit
feedbackʣͱҟͳΓɺ҉తϑΟʔυόοΫ σʔλΛऔಘ͘͢͠ɺଟ͘ͷਪનγεςϜ͜ΕΛͱʹֶश͞Ε͍ͯΔ ໌ࣔత ҉త σʔλྔ গͳ͍ ଟ͍ σʔλͷਖ਼֬͞ ਖ਼֬ ෆਖ਼֬ ະධՁͱωΨςΟ ϒͷ۠ผ ໌֬ ෆ໌֬ ʰਪનγεςϜ࣮ફೖʱhttps://www.oreilly.co.jp/books/9784873119663
©2023 Wantedly, Inc. ຊݚڀͷϞνϕʔγϣϯ ҰൠతʹΫϦοΫσʔλ͚ͩΛ͏͜ͱ͕ଟ͍ • ΫϦοΫσʔλ༷ʑͳ҉తϑΟʔυόοΫͷதͰಛʹ༰қʹೖखՄೳ • ͔͠͠ɺϊΠζόΠΞε͕େ͖͘ɺਖ਼֬ͳᅂͷਪఆ͕͍͠
©2023 Wantedly, Inc. ຊݚڀͷϞνϕʔγϣϯ ΫϦοΫσʔλͰͳ͘ɺߪೖσʔλ͚ͩΛར༻͢Δͷʁ • ਪનγεςϜͰϢʔβʔʹଅਐ͍ͤͨ͞ߦಈʢeίϚʔεͰ͋ΕߪೖʣΛֶशʹ ͑ΔͷͰ͋ΕɺͦΕʹӽͨ͜͠ͱͳ͍ •
͔͠͠ɺσʔλͷεύʔεੑʹىҼ͢Δίʔϧυελʔτ͕ੜ͍͢͡
©2023 Wantedly, Inc. ຊݚڀͷϞνϕʔγϣϯ ෳͷछྨͷߦಈΛֶशʹར༻ͯ͠ɺͦΕͧΕͷܽΛิ͍͍ͨ • ิॿతͳߦಈσʔλ(ΫϦοΫ)Λར༻͢Δ͜ͱͰɺεύʔεͳλʔήοτߦಈ(ߪೖ)ͷ ༧ଌੑೳΛڧԽͤ͞Δ ΫϦοΫ
ߪೖ σʔλྔ ଟ͍ গͳ͍ ϊΠζͷେ͖͞ େ͖͍ খ͍͞ ίʔϧυελʔτ ൃੜ͠ʹ͍͘ ൃੜ͍͢͠
©2023 Wantedly, Inc. ղܾ͍ͨ͠՝ᶃ ෳछྨͷߦಈσʔλͷؒʹΪϟοϓ͕ଘࡏ͢Δ • ྫ͑ɺϢʔβʔ͕ΫϦοΫ͕ͨ͠ߪೖ͠ͳ͔ͬͨͳͲɺ֤ʑͷϊΠζʹΑͬͯੜ͡Δ • φΠʔϒʹʮߦಈͷछྨ͝ͱʹϢʔβʔͷΈΛֶशͨ͠ޙͦΕͧΕΛΈ߹ΘͤΔʯ
͜ͱΛͨ͠ͱͯ͠ɺҰ؏ͨ͠ϢʔβʔͷਅͷᅂΛਪఆ͢Δ͜ͱͦ͠͏
©2023 Wantedly, Inc. ղܾ͍ͨ͠՝ᶄ ิॿతͳߦಈσʔλͰ͋ΔΫϦοΫσʔλͷϊΠζ͕ඇৗʹେ͖͍ • ϊΠζͷେ͖͞Λߟྀ͓͔ͯ͠ͳ͍ͱɺ͜ΕͷӨڹ͕ࢧతʹͳͬͯ͠·͏
©2023 Wantedly, Inc. ઌߦݚڀͲ͏͍ͯͨ͠ʁ ෳछྨͷߦಈΛ׆༻͢Δઌߦݚڀɺ՝ᶃᶄʹରԠͰ͖͍ͯͳ͍ͱओு • ߦಈͷछྨΛҟछͷϊʔυʹஔ͖͑ͯάϥϑͰղ͍ͨΓɺϚϧνλεΫֶशΛͨ͠Γ • σʔλͷΪϟοϓΛߟྀͰ͖͍ͯͳ͍ͷͰɺීวతͳᅂදݱΛ࡞Ε͍ͯͳ͍ͷͰ •
ิॿใͷϊΠζͷେ͖͞ΛߟྀͰ͖͍ͯͳ͍ͷͰɺޮՌతͳิॿʹͳ͍ͬͯͳ͍ͷͰ
©2023 Wantedly, Inc. ຊݚڀͰࢧ͍࣋ͨ͠Ծઆ ෳछྨ͋ΔߦಈͦΕͧΕϢʔβʔͷਅͷᅂʹج͍͍ͮͯΔ ਅͷᅂ P(R_t) ΫϦοΫ P(R_g) ߪೖ
P(R_f) ʴϊΠζͳͲ ʴϊΠζͳͲ
©2023 Wantedly, Inc. Ծઆʹج͍ͮͨख๏ͷఏҊ જࡏม(ਅͷᅂ)ΛڬΜͰɺෳछྨͷߦಈσʔλΛΞϥΠϝϯτ͢Δ • ਅͷᅂΛֶशͯ͠ਪʹ͏ • ֤ߦಈσʔλͱͷؒͷKL-divͷ࠷খԽͱ֤ߦಈσʔλͷ࠷େԽΛࢦ͢ ֶशɿ
ਪɿ ਪ࣌ʹP(R_f)Λ͍ͬͯΔͷܦݧతʹྑ͔͔ͬͨΒ
©2023 Wantedly, Inc. ֶश࣌ͷ ֶश҆ఆੑΛߴ͘͢ΔͨΊʹKL-divͷܭࢉͰࣄલֶशࡁΈϞσϧΛ͏ • ࣄલʹߦಈͷछྨ͝ͱʹϞσϧΛֶश͓ͤͯ͘͞ ͷՕॴҎ֎ͷϞσϧֶ͕शର
©2023 Wantedly, Inc. ࣮ݧઃܭ ࣮ݧͰݕূ͍ͨ͜͠ͱʁ(RQ) • ఏҊख๏ͷੑೳطଘͷෳߦಈϞσϧΑΓ্͍ͯ͠Δ͔ʁ • ఏҊख๏ͷੑೳطଘͷσϊΠδϯάख๏ΑΓ্͍ͯ͠Δ͔ʁ
©2023 Wantedly, Inc. ࣮ݧઃܭ ઃܭ߲ • σʔληοτɿECαʔϏεͷΦʔϓϯσʔλʢΫϦοΫΛิॿɺߪೖΛλʔήοτͱ͢Δʣ • ධՁࢦඪɿRecall@k ͱ
NDCG@k (k=10, 20)ɺ྆ऀͱ͕ߴ͍΄Ͳྑ͍݁Ռ • ϕʔεϥΠϯɿϋΠύϥධՁσʔληοτ͝ͱʹඍௐ
©2023 Wantedly, Inc. ࣮ݧ݁Ռᶃ طଘͷෳߦಈϞσϧΑΓ༧ଌਫ਼্͕͍ͯ͠Δ͜ͱΛ֬ೝ ୯Ұ ෳ
©2023 Wantedly, Inc. ࣮ݧ݁Ռᶄ طଘͷσϊΠδϯάख๏ΑΓ༧ଌਫ਼্͕͍ͯ͠Δ͜ͱΛ֬ೝ ୯Ұ ୯Ұ σ ϊ Π
δ ϯ ά ख ๏
©2023 Wantedly, Inc. αϚϦʔ ෳͷߦಈใΛΞϥΠϝϯτͯ͠ਅͷᅂΛਪఆ͢Δख๏ΛఏҊͨ͠จ • ϞνϕʔγϣϯɿෳͷߦಈσʔλΛֶशʹ͏͜ͱͰɺ֤ߦಈσʔλͷܽΛิ͍͍ͨ • ՝ɿ •
ߦಈσʔλͷؒʹΪϟοϓ͕͋Δ • औಘ͕༰қͳߦಈσʔλ΄ͲϊΠζ͕େ͖͍ • ղܾํ๏ɿ • ϢʔβʔͷਅͷᅂΛજࡏมͱ͠ɺͦΕʹج͍ͮͨߦಈ݁Ռ͕؍ଌมͱΈͳ͢ • જࡏมΛڬΜͰɺෳͷߦಈσʔλΛదʹΞϥΠϝϯτ͢Δ