論文紹介 Balancing Relevance and Discovery to Inspire Customers in the IKEA App

論文紹介 Balancing Relevance and Discovery to Inspire Customers in the IKEA App

RecSys2020論文読み会の発表資料です
https://connpass.com/event/189192/

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Takashi Nishibayashi

October 17, 2020
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  1. ࿦จ঺հ #BMBODJOH3FMFWBODFBOE%JTDPWFSZ UP*OTQJSF$VTUPNFSTJOUIF*,&""QQ 3FD4ZT࿦จಡΈձ ੢ྛ޹ !IBHJOP

  2. "CPVUNF ✦ 4PGUXBSF&OHJOFFSBU70:"(&(3061 ✦ ޿ࠂ഑৴ϓϩμΫτͷ։ൃΛ͍ͯ͠·͢ ✦ 3FD4ZTॳࢀՃ ✦ 5XJUUFS!IBHJOP

  3. ঺հ͢Δ࿦จ

  4. ಺༰ ✦ *,&"ΞϓϦͷ*OTQJSBUJPOBM'FFEʹ͓͚ΔϦίϝϯυํࡦʹ#BOEJU 'FFECBDLϩά࢖ͬͨϙϦγʔֶशΞϓϩʔνΛద༻ͨ͠ ✦ Ϣʔβʔ͕ΠϯεϐϨʔγϣϯΛಘΒΕΔ༷ʹDPVOUFSGBDUVBMSJTL NJOJNJ[BUJPOQSJODJQMF<>ʹج͍ͮͯํࡦΛֶशͨ͠ ✦ "#ςετͷ݁ՌɺڠௐϑΟϧλϦϯάʹΑΔํࡦͱൺֱͯ͠ΫϦοΫ཰ ্͕ঢͨ͠

    ✦ ϖʔύʔʹ͸ଛࣦؔ਺΋࣮ݧ݁Ռ΋΄ͱΜͲॻ͍ͯͳ͔ͬͨͷͰɺ͜ͷൃ ද͸ޱ಄ൃද಺༰Λ࢖ͬͯิ׬͍ͯ͠·͢
  5. *OTQJSBUJPOBM'FFE ✦ Ϣʔβʔ͸༷ʑͳ෦԰ͷλΠϓʹ͋ΘͤͯՈ۩͕ ഑ஔ͞ΕͨΠϝʔδ͕ӾཡͰ͖Δ ✦ ͜ͷϑΟʔυ͸Ϣʔβʔʹؔ࿈͕͋ΓΠϯεϐ ϨʔγϣϯΛ༩͑Δ΋ͷʹ͍ͨ͠ɻڻ͖ͷཁૉ͕ ٻΊΒΕΔɻ 3FMFWBODFBOE%JTDPWFSZUP*OTQJSF 

    ✦ ؔ࿈ੑʹಛԽͨ͠Ϧίϝϯυػೳ͸طʹ͋Δ
  6. $POUFYUVBMCBOEJUTXJUICBUDIMFBSOJOHGSPN MPHHFECBOEJUGFFECBDL ✦ Ͳͷը૾Λදࣔ͢Δ͔ ✦ $POUFYUVBM#BOEJUTͰܾΊΔ ✦ $POUFYUVBM#BOEJUTͷߦಈબ୒ϙϦγʔͷֶश ✦ όονͰ΍Δ

    㱠ΦϯϥΠϯֶश  ✦ #BOEJU'FFECBDLϩάΛ࢖ͬͯ܇࿅ ✦ CBTFEPOUIFQSJODJQMFPGDPVOUFSGBDUVBMSJTLNJOJNJ[BUJPO<> ✦ $PVOUFSGBDUVBM-FBSOJOH
  7. ✦ ߦಈ ✦ ը૾Λબ୒ͯ͠දࣔ͢Δࣄ ✦ ใु ✦ දࣔͨ͠ը૾͕ΫϦοΫ͞ΕΔ͔Ͳ͏͔㱨\ ^ ✦

    ίϯςΩετ ✦ ΞϓϦ্ͷϢʔβʔࣗ਎ͷաڈͷ;Δ·͍ *OTQJSBUJPOBM'FFEͷ#BOEJUઃఆ
  8. $POUFYUVBMCBOEJUT ܁Γฦ͠ҙࢥܾఆ໰୊ʹ͓͍ͯྦྷੵใुͷ࠷େԽΛૂ͏ํࡦͷͳ͔Ͱ΋ ϥ΢ϯυຖͷίϯςΩετ৘ใΛར༻ͯ͠ٻΊͨείΞʹैͬͯߦಈΛબ୒͢ Δ΋ͷɻ؍ଌͨ͠ใुΛ࢖ͬͯείΞϦϯάϞσϧΛߋ৽͍ͯ͘͠ɻ είΞϦϯάϞσϧʹઢܗϞσϧΛ࠾༻ͨ͠-JO6$#<>ͳͲɺ༷ʑͳํࡦ͕ఏҊ͞Ε͍ͯΔ

  9. ࢀߟ-JO6$#<> ϥ΢ϯυUʹ͓͚ΔߦಈBͷ είΞใुͷظ଴஋ ඪ४ภࠩºЋ είΞ͕࠷େͷߦಈΛ࣮ߦ ύϥϝʔλߋ৽

  10. #BUDIMFBSOJOHGSPNMPHHFECBOEJUGFFECBDL ✦ CBOEJUGFFECBDLϩάΛ࢖ֶͬͨश ✦ աڈͷߦಈબ୒ϙϦγʔʹΑΔόΠΞεͷิਖ਼͕ඞཁ ✦ ਪનγεςϜͷϩά͸جຊతʹCBOEJUGFFECBDL ✦ ΦϯϥΠϯֶशͰ͸ͳ͍ཧ༝͸ಛʹઆ໌͕ແ͔͕ͬͨ ✦

    ϦΫΤετྔ͕ଟ͍αʔϏεͰόϯσΟοτΞϧΰϦζϜΛ࢖͏৔߹͸ ࿦จͷखଓ͖௨ΓʹύϥϝʔλΛஞ࣍ߋ৽͢Δέʔε͸গͳ͍ͱࢥ͏ ✦ ΦϯϥΠϯֶश͸ӡ༻͕େม
  11. ิ଍#BOEJU'FFECBDLϩάΛ࢖ֶͬͨश ✦ #BOEJU'FFECBDLϩάΛར༻ͨ͠৽͍͠ߦಈબ୒ϙϦγʔͷੑೳධՁΛߦͳ͏ ख๏͸ଘࡏ͢Δ ˠ0⒎1PMJDZ&WBMVBUJPO *OWFSTF1SPQFOTJUZ4DPSJOH %PVCMZ3PCVTU ʜ  ✦

    ੑೳධՁ஋͕࠷େʹͳΔ༷ʹߦಈબ୒ϙϦγʔΛֶश͢Ε͹ྑ͍ ✦ ߦಈΛBɺίϯςΩετΛYɺใुΛSͱͯ͠*14ͰධՁ͢Δ৔߹͸ КOFXͷ*14$PVOUFSGBDUVBM&TUJNBUPS
  12. ߦಈબ୒ϙϦγʔͷֶश ϙϦγʔК͕ίϯςΩετYʹରͯ͠ߦಈZΛબͿ֬཰ ܏޲είΞ ΛК ZcY  ใुΛЎͱ͓͘ɻաڈͷϙϦγʔКͷ܏޲είΞͱ؍ଌͨ͠ใुΛར༻ͯ͠ɺ৽ͨͳ ϙϦγʔКВΛֶश͢Δ ޱ಄ൃදεϥΠυ͔Βഈआ ͜ͷ··Ͱ͸෼ࢄͷ໰୊͕ग़ΔͷͰɺ<>Λࢀߟʹ͍͔ͭ͘ͷ޻෉ΛऔΓ͍Ε͍ͯΔͱͷઆ

    ໌͕͋ͬͨ
  13. ଛࣦؔ਺ͷ௚ײతͳղऍ ใु͕ಘΒΕͨߦಈͰಛʹաڈͷϙϦγʔͷ܏޲είΞ͕௿͍ߦಈͷ܏޲είΞ্͕ ͕Ε͹ϩε͕Լ͕Δɻͭ·Γ͋·Γબ୒͠ͳ͔͕ͬͨΫϦοΫ͕ಘΒΕͨߦಈΛଟ͘ બͿ༷ʹֶश͢Δɻ ޱ಄ൃදεϥΠυ͔Βഈआ

  14. ଛࣦؔ਺͸Ͳ͔͜Βདྷͨͷ͔ ޱ಄ൃදεϥΠυͷࣜ͸3FGFSFODFʹ͋Δ 4XBNJOBUIBOΒ$PVOUFSGBDUVBMSJTL NJOJNJ[BUJPO-FBSOJOHGSPNMPHHFECBOEJU GFFECBDLz *$.- <>ʹ͓͚ΔఏҊख๏ ͷಋग़ͷং൫ʹ͋Δ*14ϕʔεͷࣜɻ  ͳͷͰ࣮ࡍʹ࢖͍ͬͯΔ

    ͷ͸<>ͷఏҊख๏ͷࣜ ͩͱࢥΘΕΔ
  15. $PVOUFSGBDUVBMSJTLNJOJNJ[BUJPO-FBSOJOHGSPNMPHHFE CBOEJUGFFECBDL *$.- <> ✦ *14ͷ෼ࢄ༝དྷͷΤϥʔΛό΢ϯυ͢ΔVOCJBTFEFTUJNBUPSͰ͋Δ $3.$PVOUFSGBDUVBM3JTL.JOJNJ[BUJPOΛఏҊɺ෼ࢄΛਖ਼ଇԽ߲ʹ ✦ $3.Λֶश͢Δ܇࿅ΞϧΰϦζϜ10&.ͷఏҊ

  16. ิ଍%PVCMZSPCVTUNFUIPEGPSDPVOUFSGBDUVBM MFBSOJOH Yuan, Bowen, et al. "Improving ad click prediction

    by considering non-displayed events." Proceedings of the 28th ACM International Conference on Information and Knowledge Management. 2019.
  17. ΦϯϥΠϯධՁ ✦ ධՁࢦඪ$53 ✦ ͷ޲্͕֬ೝͰ͖ͨ ✦ ڠௐϑΟϧλϦϯάϕʔεͷख๏ͱൺֱ ✦ ڠௐϑΟϧλϦϯά͸3FMFWBODFॏࢹ ✦

    ౰ॳͷ໨త͸ୡ੒Ͱ͖ͨ  ✦ આ໌͸ແ͔͕ͬͨʮࠓ·Ͱʹਪન͠ͳ͔ͬͨΞΠςϜΛଟ͘ਪન͢ΔࣄͰΫ ϦοΫ͕૿͑ͨʯˠ*OTQJSBUJPOΛ༩͑Δࣄ͕Ͱ͖ͨͱղऍͰ͖ͦ͏ ✦ ΫϦοΫ͕ݮ͍ͬͯͳ͍ˠϏδωεࢦඪΛᆝଛ͍ͯ͠ͳ͍
  18. ౰೔ͷ࣭ٙԠ౴ͷൈਮ 2%PVCMZ3PCVTUͰ͸ͳ͘*14ʹͨ͠ͷ͸Կނ  ಛʹΦϑϥΠϯධՁͰ෼ࢄ͕໰୊ʹͳΒͳ͔͔ͬͨ  "%PVCMZ3PCVTU͸ߟ͑ͳ͔ͬͨɻ͔͠͠෼ࢄΛ཈͑ΔͨΊʹ܏޲εί ΞͷΫϦοϐϯά౳Λߦͳͬͨ 2"#ςετΛि͚ؒͩ૸Βͤͨ͜ͱͰɺϢʔβʔ͕׳Ε਌͠Μͩ " ͱ͸ҧͬ

    ͍ͯͨͨΊ  # ͷ$53͕ߴ͘ͳͬͨՄೳੑ͸͋Δ͔  "ͦͷޙ΋Ұ؏ͯ͠ߴ͍$53Λ͍ࣔͯ͠Δ͔ΒɺͦΕ͸ແ͍ͱߟ͍͑ͯΔ 2୳ࡧΛߦͳ͏ࣄͰΫϦοΫͷݮগ͸ΈΒΕͳ͔͔ͬͨ  "શ͘ٯͰ૿Ճͨ͠
  19. ࢀߟจݙ <>5ÓUI #BMÂ[T 4BOEIZB4BDIJEBOBOEBO BOE&NJM4+”SHFOTFO#BMBODJOH3FMFWBODFBOE %JTDPWFSZUP*OTQJSF$VTUPNFSTJOUIF*,&""QQ'PVSUFFOUI"$.$POGFSFODFPO 3FDPNNFOEFS4ZTUFNT <>-J -JIPOH FUBM"DPOUFYUVBMCBOEJUBQQSPBDIUPQFSTPOBMJ[FEOFXTBSUJDMF

    SFDPNNFOEBUJPO1SPDFFEJOHTPGUIFUIJOUFSOBUJPOBMDPOGFSFODFPO8PSMEXJEFXFC  <>4XBNJOBUIBO "EJUI BOE5IPSTUFO+PBDIJNT$PVOUFSGBDUVBMSJTLNJOJNJ[BUJPO-FBSOJOH GSPNMPHHFECBOEJUGFFECBDL*OUFSOBUJPOBM$POGFSFODFPO.BDIJOF-FBSOJOH <>:VBO #PXFO FUBM*NQSPWJOHBEDMJDLQSFEJDUJPOCZDPOTJEFSJOHOPOEJTQMBZFE FWFOUT1SPDFFEJOHTPGUIFUI"$.*OUFSOBUJPOBM$POGFSFODFPO*OGPSNBUJPOBOE ,OPXMFEHF.BOBHFNFOU