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WWW2020 online報告会

WWW2020 online報告会

https://connpass.com/event/174856/

- Edge Formation In Social Networks To Nurture Content Creators
- OutfitNet: Fashion Outfit Recommendation with Attention-Based Multiple Instance Learning

Sekine Hiroto

April 30, 2020
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  1. CONFIDENTIAL ©2020 Wantedly, Inc. 1. Edge Formation In Social Networks

    To Nurture Content Creators 2. OutfitNet: Fashion Outfit Recommendation with 3. Graph Enhanced Representation Learning for News Recommendation ໨࣍
  2. CONFIDENTIAL ©2020 Wantedly, Inc. ɾScoreؔ਺ΛCreatorͱConsumerʹ෼͚ͯఆٛ - Feedback Sensitivity - pResponse

    ɾCreatorͱConsumerʹ෼͚ͨ৔߹ͷΦϯϥΠϯA/B ςετͷ࣮ࢪํ๏ ɾ৽ͨͳScoreؔ਺ʹΑΔCreator/Consumer΁ͷӨڹ ߩݙ
  3. CONFIDENTIAL ©2020 Wantedly, Inc. ࣮ݧσʔλ LinkedinͷϦΞϧσʔλΛ༻͍ͯonline A/BςετΛ࣮ࢪ (Follow Recommendation) Dual

    A/Bςετ ɾConsumerͱCreatorͷೋͭʹର͠ɺTreatmentͱControlΛ෼͚Δ ɾTeͱCeɺTuͱCuΛͦΕͧΕଌΔ͜ͱͰɺTradeoffͷؔ܎Λௐ΂Δ
  4. CONFIDENTIAL ©2020 Wantedly, Inc. ͲΜͳ࿦จ Fashion Recommendationʹ͓͍ͯΞΠςϜ୯ମͰਪનͯ͋͛͠ΔͷͰ͸ͳ͘ɺ Outfit(ίʔσΟωʔτ?)ͷ޷ΈΛֶश͠ɺͦͷ޷Έʹ͋ͬͨOutiftΛਪન͍ͨ͠ɻ 1. OutfitΛ΋ͱʹΞΠςϜͷrelevancyΛֶशͤ͞Δ࢓૊Έ

    2. Ϣʔβʔͷ޷Έʹ͋ͬͨFashion outfitΛਪન Multiple instance learning (MIL)ͱͯ͠ղ͘ɻ ɾෳ਺ͷΞΠςϜʹରͯ͠Ұͭͷϥϕϧ͕͍͍ͭͯΔ໰୊ ɾͲͷΞΠςϜ͕like/dislike͸ߟྀ͠ͳ͍
  5. CONFIDENTIAL ©2020 Wantedly, Inc. 'BTIJPO*UFN3FMFWBODZOFUXPSL '*3  ϑΝογϣϯΞΠςϜؒͷؔ܎ੑͷຒΊࠐΈֶश S: outfitͷsubset

    x: itemͷrepresentation ɾ xi (positive) : S + {x}ؚ͕·ΕΔoutfit͕ଘࡏ͢Δ ɾ xj (negative) : S + {x}ؚ͕·ΕΔoutfit͕ଘࡏ͠ͳ͍ ಉ͡outfitʹೖΓͦ͏ͳΞΠςϜಉ࢜ͷڑ཭͕ ۙ͘ͳΔΑ͏ʹֶश Y@Jͱ4ͷSFMFWBODZTDPSF
  6. CONFIDENTIAL ©2020 Wantedly, Inc. 'BTIJPO*UFN3FMFWBODZOFUXPSL '*3  ΞΠςϜͷrepresentationͷt-SNEʹΑΔՄࢹԽ ɾFIR: ಉ͡ܥ౷(taste)ͷΞΠςϜ͕

    ɹɹɹۙ͘ʹ഑ஔ͞ΕΔΑ͏ʹݟ͑Δɻ ɾDenseNet: Visual΍γϧΤοτʹґଘͯ͠ ɹɹɹΞΠςϜ͕഑ஔ͞Ε͍ͯΔɻ
  7. CONFIDENTIAL ©2020 Wantedly, Inc. "UUFOUJPOͷޮՌ Outfit 1Ͱ͸πͷ஋͸૯ͯ͡େ͖͍͕ɺOutfit 2, 3Ͱ͸খ͍͞ɻ Outfit

    3ͷηʔλʔ͸πͷ஋͕େ͖͘ͳ͍ͬͯͯɺͦΕʹ൐ͬͯuser͕޲͚ΔAttention΋େ͖͘ͳ͍ͬͯΔɻ → ηʔλʔͷ৭ຯͱOutfit 1ͷ৭ຯ͕ࣅ͍ͯΔ͔Βೲಘ Outfit 1ͷΈUserͷ޷ΈͳOutfit
  8. CONFIDENTIAL ©2020 Wantedly, Inc. ·ͱΊɾײ૝ • FIRʹΑͬͯΞΠςϜಉ࢜ͷؔ࿈ੑΛֶश͢Δ͜ͱ͕Ͱ͖ͨɻ • OPʹΑͬͯoutfit಺ͷΞΠςϜΛߟֶྀͯ͠श͢ΔϑϨʔϜϫʔΫΛ࡞Εͨɻ •

    FIRͱOPʹΑͬͯ fill-in-the-blank(FITB)taskͰ SOTAΛ֫ಘͰ͖ͨɻ • AttentionΛར༻ͯ͠Ϣʔβʔʹpersonalized͞ΕͨfashionΛ֫ಘͰ͖ͨɻ