会社訪問アプリ「Wantedly Visit」における相互推薦システムの応用事例 / deim2020-rrs-wantedly-visit

2020年3月3日 DEIM2020 (https://db-event.jpn.org/deim2020/index.html) における技術報告の資料です。

[B4] 情報推薦②　3月3日 13:30 ～ 15:10
https://cms.deim-forum.org/deim2020/program/?oral#/B4

本番ではこの資料の縮小版で発表を行っています。

従来の推薦システムと比較した「相互推薦システム」の特徴や課題を説明し，
それらに対して Wantedly Visit ではどのような考えでどのような取り組みを行っているのか簡単に紹介しました。

Transcript

1. ©2020 Wantedly, Inc.
   ձࣾ๚໰ΞϓϦʮ8BOUFEMZ7JTJUʯʹ͓͚Δ
   ૬ޓਪનγεςϜͷԠ༻ࣄྫ
   <#>
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   .BSDIদଜ༏໵ʢ΢ΥϯςουϦʔגࣜձࣾʣ!ZVZB
   

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2. ©2020 Wantedly, Inc.
   ͸͡Ίʹ
   w ࣗݾ঺հɼձࣾͱϓϩμΫτͷ঺հ
   w ϓϩμΫτʹ͓͚ΔσʔλαΠΤϯεͷऔΓ૊Έࣄྫ
   ૬ޓਪનγεςϜͱ͸
   w ֓ཁɼैདྷͷਪનγεςϜͱൺ্ֱͨ͠Ͱͷಛ௃ͱ՝୊
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3. ©2020 Wantedly, Inc.
   ͸͡Ίʹ
   w ࣗݾ঺հɼձࣾͱϓϩμΫτͷ঺հ
   w ϓϩμΫτʹ͓͚ΔσʔλαΠΤϯεͷऔΓ૊Έࣄྫ
   ૬ޓਪનγεςϜͱ͸
   w ֓ཁɼैདྷͷਪનγεςϜͱൺ্ֱͨ͠Ͱͷಛ௃ͱ՝୊
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   w 8BOUFEMZ7JTJUʹ͓͚Δ૬ޓਪનγεςϜͷಛ௃ͱ՝୊ɼٴͼऔΓ૊Έ
   ձࣾ๚໰ΞϓϦʮ8BOUFEMZ7JTJUʯʹ͓͚Δ૬ޓਪનγεςϜͷԠ༻ࣄྫ
   

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4. ©2020 Wantedly, Inc.
   ✓দଜ༏໵ʢ:VZB.BUTVNVSBʣ
   ✓೥݄ژ౎େֶେֶӃ৘ใֶݚڀՊम࢜՝ఔमྃ
   ✓΢ΥϯςουϦʔגࣜձࣾ3FDPNNFOEBUJPOνʔϜ
   ✓σʔλαΠΤϯςΟετɼνʔϜϦʔυ
   ✓8BOUFEMZ7JTJUʹ͓͚ΔਪનγεςϜͷ։ൃͳͲΛ୲౰
   @yu-ya4
   @yu__ya4
   ࣗݾ঺հ
   

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5. ©2020 Wantedly, Inc.
   ձࣾ঺հ
   γΰτͰίίϩΦυϧͻͱΛ;΍͢
   "CREATE A WORLD WHERE WORK DRIVES PASSION"
   

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6. ©2020 Wantedly, Inc.
   Ϗδωε4/4ʮ8BOUFEMZʯ
   ձࣾͱಇ͘ਓɺ·ͨ͸ಇ͘ਓಉ࢜Λͭͳ͛Δϓϥο
   τϑΥʔϜɻओཁαʔϏε͸ɺձࣾͱಇ͘ਓ͕ϛο
   γϣϯ΍Ϗδϣϯ΁ͷlڞײzͰϚονϯά͢Δ
   ʮ8BOUFEMZ7JTJUʯͱɺಇ͘ਓಉ͕࢜ͭͳ͕ͬͯɺ
   ࣗ਎ͷܦݧ΍Ξ΢τϓοτΛ஝ੵɾڞ༗Ͱ͖Δ
   ʮ8BOUFEMZ1FPQMFʯɻొ࿥ձࣾ਺͸ ࣾɻ
   ϓϩμΫτ঺հ
   

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7. ©2020 Wantedly, Inc.
   ϓϩμΫτʹ͓͚ΔσʔλαΠΤϯεͷऔΓ૊Έࣄྫ
   

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8. ©2020 Wantedly, Inc.
   Ϣʔβ͝ͱʹ࠷దԽ͞Εͨίϯςϯπͷਪન8BOUFEMZ7JTJU
   Ϣʔβʹద੾ͳίϯςϯπΛఏڙͯ͠
   ཧ૝ͷϚονϯάΛ࣮ݱ͢ΔͨΊͷ༷ʑͳਪનγεςϜ
   ࣗવݴޠॲཧ΍ػցֶशͳͲ༷ʑͳٕज़Λ׆༻
   

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9. ©2020 Wantedly, Inc.
   ืूͷ৬छਪఆ8BOUFEMZ7JTJU
   େ෼ྨɿΤϯδχΞ
   খ෼ྨɿͦͷଞΤϯδχΞ
   େ෼ྨɿΤϯδχΞϦϯά
   খ෼ྨɿσʔλαΠΤϯςΟετ
   ৬छ߲໨ͷେ෯ͳϦχϡʔΞϧʹ൐͍
   ࣗવݴޠॲཧΛ׆༻ͯ͠
   ืूͷ಺༰͔Β৽͍͠৬छ߲໨಺ͷద੾ͳ৬छΛਪఆ
   

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10. ©2020 Wantedly, Inc.
    ͭͳ͕Γάϥϑͷ׆༻8BOUFEMZ1FPQMF
    Ϣʔβͱձ͔ࣾΒߏ੒͞ΕΔιʔγϟϧάϥϑΛ΋ͱʹɺ

    Ϣʔβಉ࢜ͷؔ܎ੑΛਪఆ
    ͭͳ͕Γͷਪન΍ίϯςϯπͷฒͼॱ࠷దԽʹ׆༻
    

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    ࿩୊ͷਪન8BOUFEMZ1FPQMF
    ͭͳ͕ͬͨ૬खͷ͜ͱΛΑΓਂ͘஌ΔͨΊɺ

    ࣗવݴޠॲཧΛ׆༻ͯ͠ɺ૬खʹؔ࿈͢Δ࿩୊Λਪఆ
    lϏδωε4/4ʮ8BOUFEMZʯΛӡӦ͢Δ΢ΥϯςουϦʔ͸ɺʜz
    χϡʔεهࣄ
    l΢ΥϯςουϦʔz
    ձ໊ࣾ
    ݻ༗දݱநग़
    ݕࡧΠϯσοΫε
    ϢʔβϓϩϑΟʔϧ
    l8BOUFEMZ *ODz
    ໊دͤɾݕࡧ
    

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12. ©2020 Wantedly, Inc.
    ։ൃ૊৫
    Visit Dev Tribe People Tribe
    Infra Squad
    All Engineers and Designers
    w σʔλαΠΤϯςΟετͷΈ͔ΒͳΔݚڀ։ൃνʔϜͷΑ͏ͳ΋ͷ͸ઃ͚͍ͯͳ͍ɻ
    w ͋͘·ͰϓϩμΫτΛʢ௚઀తʹʣΑΓΑ͘͢Δ͢Δ͜ͱʹߩݙ͢Δ͜ͱΛ໨తͱ͍ͯ͠Δɻ
    w ϓϩμΫτʹ͓͚Δୡ੒͢΂͖໨త͝ͱʹνʔϜ 4RVBE
    ͕݁੒͞ΕɼͦͷνʔϜϝϯόʔͷ
    ̍ਓͱͯ͠σʔλαΠΤϯςΟετ΍.-ΤϯδχΞ͕ΞαΠϯ͞ΕΔɻ
    

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13. ©2020 Wantedly, Inc.
    ΞΧσϛΞʹ΋ߩݙ͍͖͍ͯͨ͠ͱߟ͑ͯಈ͖࢝Ί͍ͯΔɻ
    

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14. ©2020 Wantedly, Inc.
    3FD4ZT΁ͷࢀՃ࿦จಡΈձΠϕϯτͷاըӡӦ
    https://connpass.com/event/148001/
    

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15. ©2020 Wantedly, Inc.
    %&*.΁ͷڠࢍٕज़ใࠂ
    https://db-event.jpn.org/deim2020/
    

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16. ©2020 Wantedly, Inc.
    ͸͡Ίʹ
    w ࣗݾ঺հɼձࣾͱϓϩμΫτͷ঺հ
    w ϓϩμΫτʹ͓͚ΔσʔλαΠΤϯεͷऔΓ૊Έࣄྫ
    ૬ޓਪનγεςϜͱ͸
    w ֓ཁɼैདྷͷਪનγεςϜͱൺ্ֱͨ͠Ͱͷಛ௃ͱ՝୊
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    w 8BOUFEMZ7JTJUʹ͓͚Δ૬ޓਪનγεςϜͷಛ௃ͱ՝୊ɼٴͼऔΓ૊Έ
    ձࣾ๚໰ΞϓϦʮ8BOUFEMZ7JTJUʯʹ͓͚Δ૬ޓਪનγεςϜͷԠ༻ࣄྫ
    

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17. ©2020 Wantedly, Inc.
    ૬ޓਪનγεςϜʢReciprocal Recommender Systemsʣͱ͸ʁ
    ʮαʔϏε಺ͷϢʔβΛޓ͍ʹਪન͢ΔγεςϜʯ
    User Item
    ैདྷͷҰൠతͳਪનγεςϜ
    ૬ޓਪનγεςϜ
    User(Female)
    User(Male)
    User(Job Seeker) User(Recruiter/Company)
    ex. Amazon, Netflix
    ex. Tinder, Pairs
    ex. Wantedly, LinkedIn
    

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18. ©2020 Wantedly, Inc.
    ैདྷͷਪનγεςϜͱ૬ޓਪનγεςϜͷൺֱ
    ਪનͷ੒ޭ
    ਪનγεςϜʹର͢ΔϢʔβͷೝࣝ
    Ϣʔβ͔Β໌ࣔతʹఏڙ͞ΕΔϓϩϑΟʔϧ΍ᅂ޷ʹ͍ͭͯͷ৘ใ
    ϢʔβͷϥΠϑαΠΫϧ
    ϢʔβͷγεςϜ಺ʹ͓͚Δߦಈͷ࢟੎
    

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19. ©2020 Wantedly, Inc.
    ਪનͷ੒ޭ
    w ैདྷͷਪનγεςϜ
    w ਪન͕੒ޭ͢Δ͔Ͳ͏͔͸ɼਪનΛड͚औΔϢʔβ TVCKFDU
    ͷΈʹΑܾͬͯఆ͞ΕΔɻ
    w Ϣʔβ͕ਪન͞ΕΔΞΠςϜ PCKFDU
    Λߪೖࢹௌ͢Ε͹ͦͷਪન͸੒ޭͱͳΔɻ
    w ਪન͞ΕΔΞΠςϜͷҙࢥ͸ؔ܎ͳ͍ɻ
    w ૬ޓਪનγεςϜ
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    ਪન͸੒ޭͱͳΔɻ
    w ਪન͞ΕͨϢʔβ͕޷ҙతͳϦΞΫγϣϯΛ͠ͳ͚Ε͹ͦͷਪન͸ࣦഊʹऴΘΔɻ
    

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    ਪનγεςϜʹର͢ΔϢʔβͷೝࣝ
    w ैདྷͷਪનγεςϜ
    w ਪનΛड͚औΔϢʔβ͸ɼਪન͕੒ޭ͢Δ͔Ͳ͏͔͸ɼਪનΛड͚औΔϢʔβͷΈʹ
    Αܾͬͯఆ͞ΕΔ͜ͱΛೝ͍ࣝͯ͠Δɻ
    w ਪન͞ΕΔΞΠςϜ͕ࣗ෼ͷᅂ޷ʹҰக͍ͯ͠Ε͹ߪೖࢹௌ͢Δɻ
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    w ૬ޓਪનγεςϜ
    w ਪનΛड͚औΔϢʔβ͸ɼਪન͕੒ޭ͢Δ͔Ͳ͏͔͸ɼਪનΛड͚ΔϢʔβͱਪન͞Ε
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    Ϣʔβ͔Β໌ࣔతʹఏڙ͞ΕΔϓϩϑΟʔϧ΍ᅂ޷ʹ͍ͭͯͷ৘ใ
    w ैདྷͷਪનγεςϜ
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    w ఏڙ͢ΔϞνϕʔγϣϯ͕͋·Γͳ͍ɻ
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    w ଞͷϢʔβʹݟΒΕɼͦΕ͕ਪનͷ੒ޭʹॏཁͰ͋Δ͜ͱΛೝ͍ࣝͯ͠Δɻ
    w ৽نϢʔβʹ͍ͭͯͷ৘ใ͕ॆ࣮͍ͯ͠ΔͨΊίʔϧυελʔτ໰୊͕ൺֱతখ͍͞ɻ
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    ϢʔβͷϥΠϑαΠΫϧ
    w ैདྷͷਪનγεςϜ
    w ਪનγεςϜʹຬ଍͢Ε͹αʔϏεΛ௕͘࢖͍ଓ͚Δɻ
    w Ϣʔβͷߦಈʹجͮ͘҉໧తͳᅂ޷৘ใ͕ଟ͘஝ੵ͞ΕΔɻ
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    ͕୹͍ɻ
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    ϢʔβͷγεςϜ಺ʹ͓͚Δߦಈͷ࢟੎
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    w ଴͍ͬͯͯ΋ߪങ΍ࢹௌͳͲͷ໨త͸ୡ੒͞Εͳ͍ɻ
    w ૬ޓਪનγεςϜ
    w ੵۃతʹೳಈతʹߦಈ͢ΔϢʔβ΋͍Ε͹ɼʮ޷ҙʯ͕ࣔ͞ΕΔͷΛ଴͕ͪͪͳडಈతͳ
    Ϣʔβ΋͍Δɻ
    w TVCKFDUଆͷϢʔβ͔Βࣔ͞ΕΔʮ޷ҙʯʹରͯ͠ϦΞΫγϣϯΛ͢Δ͚ͩͰ΋αʔϏεΛར༻͢Δ໨త͸
    ୡ੒ՄೳͰ͋Δɻ
    w डಈతͳϢʔβ͕γεςϜ্ͰTVCKFDUଆͷϢʔβʹਪન͞Εͳ͍ͱɼ੒ޭମݧΛಘΒΕͳ͍͜ͱʹͳΔɻ
    

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    ਪનͷ੒ޭ
    ‣ ਪનΛड͚ΔϢʔβ TVCKFDU
    ͱਪન͞ΕΔϢʔβ PCKFDU
    ͷ྆ํͷᅂ޷͕Ұகͯ͠ॳΊͯਪન͕੒ޭ͢Δɻ
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    Ϣʔβ͔Β໌ࣔతʹఏڙ͞ΕΔϓϩϑΟʔϧ΍ᅂ޷ʹ͍ͭͯͷ৘ใ
    ‣ Ϣʔβ͕ࣗ਎Ͱఏڙ͢Δ໌ࣔతͳϓϩϑΟʔϧ΍ᅂ޷৘ใ͕๛෋͕ͩɼͦΕΒ͕ਖ਼͍͠ͱ͸ݶΒͳ͍ɻ
    ϢʔβͷϥΠϑαΠΫϧ
    ‣ ϢʔβͷϥΠϑαΠΫϧ͕୹͘ɼϢʔβͷߦಈʹجͮ͘҉໧తͳϢʔβͷᅂ޷৘ใ͕ू·Γʹ͍͘ɻ
    ϢʔβͷγεςϜ಺ʹ͓͚Δߦಈͷ࢟੎
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    ૬ޓਪનγεςϜͷಛ௃΍՝୊
    

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    ؔ࿈ݚڀطଘख๏
    ✓ [RECON] (Pizzato 2010) RECON: A Reciprocal Recommender for Online Dating
    ‣ աڈʹ޷ҙΛࣔͨ͠૬खͷϢʔβʹڞ௨͢Δཁૉ͔ΒɼϢʔβ͝ͱͷ҉໧తͳᅂ޷৘ใʢetc. ମܕɼਖ਼֬ɼֶྺ…ʣΛநग़ɻ
    ‣ நग़ͨ͠ᅂ޷৘ใͱ૬खͷϢʔβͷϓϩϑΟʔϧͷҰக౓Λܭࢉ͢ΔίϯςϯπϕʔεͰ୯ํ޲ͷద߹౓Λද͢ Preference Score Λࢉग़ɻ
    ‣ ̎ͭͷ Preference Score ͔ΒAggregation Function(ௐ࿨ฏۉ)Ͱ૒ํ޲ͷద߹౓Λද͢ Reciprocal Preference Score Λࢉग़ɻ
    ✓ [RCF] (Xia 2015) Reciprocal Recommendation System for Online Dating
    ‣ ߦಈཤྺʹجͮ͘ϢʔβϕʔεͷڠௐϑΟϧλϦϯάʢk-ۙ๣ʣͰPreference Score Λࢉग़ɻ
    ‣ Aggregation Function ͸ௐ࿨ฏۉΛར༻ɻ
    ‣ RECON (Pizzato 2010) ͷੑೳΛେ෯ʹ௒͑Δɻ
    ✓ [LFRR](Neve 2019) Latent Factor Models and Aggregation Operator for Collaborative Filtering in
    Reciprocal Recommender Systems
    ‣ ߦಈཤྺʹج͖ͮ࡞੒ͨ͠ User-User ߦྻʹMatrix Factorization Λద༻ͯ͠ Preference Score Λࢉग़ɻ
    ‣ Aggregation Function ʹ͍ͭͯɼௐ࿨ฏۉҎ֎ͷؔ਺ʹ͍ͭͯ΋ൺֱ࣮ݧͨ͠ɻ
    ‣ ੑೳ͸ RCF (Xia 2015) ͱಉఔ౓͕ͩɼࣄલʹϞσϧΛֶश͓͚ͯ͠ΔͷͰߴ଎ɻ
    User A to User B
    Preference Score
    User B to User A
    Preference Score
    Reciprocal
    Preference
    Score
    Aggregation
    Function
    

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    ͸͡Ίʹ
    w ࣗݾ঺հɼձࣾͱϓϩμΫτͷ঺հ
    w ϓϩμΫτʹ͓͚ΔσʔλαΠΤϯεͷऔΓ૊Έࣄྫ
    ૬ޓਪનγεςϜͱ͸
    w ֓ཁɼैདྷͷਪનγεςϜͱൺ্ֱͨ͠Ͱͷಛ௃ͱ՝୊
    ձࣾ๚໰ΞϓϦʮ8BOUFEMZ7JTJUʯʹ͓͚Δ૬ޓਪનγεςϜ
    w 8BOUFEMZ7JTJUʹ͓͚Δ૬ޓਪનγεςϜͷಛ௃ͱ՝୊ɼٴͼऔΓ૊Έ
    ձࣾ๚໰ΞϓϦʮ8BOUFEMZ7JTJUʯʹ͓͚Δ૬ޓਪનγεςϜͷԠ༻ࣄྫ
    

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    ਪનͷ੒ޭ
    ‣ ਪનΛड͚ΔϢʔβ TVCKFDU
    ͱਪન͞ΕΔϢʔβ PCKFDU
    ͷ྆ํͷᅂ޷͕Ұகͯ͠ॳΊͯਪન͕੒ޭ͢Δɻ
    User(Recruiter/Company)
    User(Job Seeker)
    w 8BOUFEMZ7JTJUʹ͓͚Δਪનͷ੒ޭͷఆٛ
    w ٻ৬ऀϢʔβʮ࿩Λฉ͖ʹߦ͖͍ͨʢԠืʣʯˠاۀϢʔβʮฦ৴ʯ
    w اۀϢʔβʮεΧ΢τʯˠٻ৬ऀϢʔβʮฦ৴ʯ
    w ຊ౰ʹϚονͨ͠ͷ͔Ͳ͏͔͸ɼ྆ऀΛΠϯλϏϡʔͰ΋͠ͳ͍ͱ෼͔Βͳ͍ʜɻ
    ࿩Λฉ͖ʹߦ͖͍ͨʢԠืʣ
    ฦ৴
    User(Recruiter/Company)
    User(Job Seeker)
    ฦ৴
    εΧ΢τ
    ˠϝοηʔδͷԟ෮ճ਺΍ฦ৴͢Δ·Ͱͷ࣌ؒΛߟྀͯ͠ɼਪનͷ੒ޭΛఆٛ͢Δɻ
    w ʮΧδϡΞϧͳձࣾ๚໰ʯΛఏڙ͢ΔαʔϏεނɼٻ৬ऀϢʔβͷϞνϕʔγϣϯ΋༷ʑ
    w FYʮࠓ͙͢స৬͍ͨ͠ʂʯɼʮ௚ۙͰస৬ͷ༧ఆ͸ͳ͍͚Ͳɼ໘നͦ͏ͳͱ͜Ζ͕͋Ε͹ͱΓ͋͑ͣ࿩Λฉ͖ʹ͍͖͍ͨʯ
    w ਪન͕͏·͍͔͘ͳ͔ͬͨͱ͖ͷωΨςΟϒͳମݧͷେ͖͞΋ϢʔβʹΑͬͯҟͳΔɻ
    ˠϞσϦϯάͷࡍʹϢʔβͷϞνϕʔγϣϯͳͲΛߟྀͨ͠޻෉Λ͢Δɻ
    

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    ਪનγεςϜʹର͢ΔϢʔβͷೝࣝ
    w TVCKFDUଆͷϢʔβࣗ਎͕૬ޓਪનγεςϜͰ͋Δ͜ͱΛೝ্ࣝͨ͠ͰɼPCKFDUଆͷϢʔβͷ͜ͱΛߟ͑ͯߦಈ͢Δɻ
    w اۀϢʔβͷεΧ΢τ͸༗ྉͰ͋ΔͷͰɼ͜ͷ܏޲͕ڧ͍ͱߟ͑ΒΕΔɻ
    w ࣗࣾʹͱͬͯັྗతͰ΋ɼͦͷٻ৬ऀϢʔβ͕ઈରʹࣗࣾʹڵຯΛ࣋ͬͯ͘Εͳͦ͞͏ͳΒ͹εΧ΢τΛૹΔ͜ͱΛ᪳᪯͢Δɻ
    w ҰํͰɼΩϟϯϖʔϯͳͲͰແྉͰεΧ΢τΛૹΕΔ͜ͱ΋ɻ͜ͷࡍ͸͍ͭ΋ͱҧ͏ߦಈΛͱΔ͔΋ʜʁ
    w աڈʹૹ৴ͨ͠εΧ΢τ͔ΒاۀϢʔβͷᅂ޷৘ใΛ࡞੒͢Δࡍ͸ɼεΧ΢τͷछྨΛߟྀ͢Δɻ
    ˠաڈʹૹ৴ͨ͠εΧ΢τ͔ΒاۀϢʔβͷᅂ޷৘ใΛ࡞੒͢Δࡍ͸ɼεΧ΢τͷछྨΛߟྀͨ͠޻෉Λ͢Δɻ
    w ٻ৬ऀϢʔβ͸ൺֱత͜ͷ܏޲͕ऑ͍ͱߟ͑ΒΕΔɻ
    w ٻ৬ऀϢʔβ͕ԠืͰ͖Δ਺ʹ੍ݶͳͲ͸ͳ͍͠ɼҰൠతͳٻਓαΠτʹൺ΂ͯΧδϡΞϧʹԠืͰ͖ΔαʔϏεͰ͋ΔͨΊɼࣗ෼
    ͷᅂ޷ͷΈʹج͍ͮͯͨ͘͞ΜԠืΛߦ͏܏޲ͷϢʔβ͕ଟʑ͍Δɻ
    w ҰํͰɼͬ͘͡Γͱ͓ޓ͍ͷᅂ޷͕Ϛον͍ͯ͠Δ͔Λߟ͑ͯগ਺ͷԠืΛ͍ͯ͠Δٻ৬ऀϢʔβ΋΋ͪΖΜଘࡏ͢Δɻ
    ˠաڈͷԠื৘ใ͔Βٻ৬ऀϢʔβͷᅂ޷৘ใΛ࡞੒͢Δࡍ͸ɼϢʔβͷԠืͷॏΈΛߟྀͨ͠޻෉Λ͢Δɻ
    

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    Ϣʔβ͔Β໌ࣔతʹఏڙ͞ΕΔϓϩϑΟʔϧ΍ᅂ޷ʹ͍ͭͯͷ৘ใ
    w Ϣʔβ͕ࣗ਎Ͱఏڙ͢Δ໌ࣔతͳϓϩϑΟʔϧ΍ᅂ޷৘ใ͕๛෋͕ͩɼͦΕΒ͕ਖ਼͍͠ͱ͸ݶΒͳ͍ɻ
    w ٻ৬ऀϢʔβͷํ͕͜ͷ܏޲͕ڧ͍ɻ
    w αʔϏεొ࿥࣌ʹࣗ෼ͷڵຯͷ͋Δ৬छΛબ୒͢Δɻ
    w ࣮ࡍʹԠืͨ͠ืूͷ৬छͱҰக͍ͯ͠ͳ͍΋ͷ͕͚ͬ͜͏ͳׂ߹ଘࡏ͢Δɻ
    w ࠷ॳʹ৬छΛબ୒ͨ࣌͠఺Ͱ͸ɼࣗ෼͕ຊ౰ʹ΍Γ͍ͨ͜ͱ͕·ͩ͸͖ͬΓ͍ͯ͠ͳ͍ɻ
    w αʔϏεΛར༻͍ͯ͠Ζ͍ΖͳืूΛݟͨΓ࿩Λฉ͍͍ͯΔ͏ͪʹ͸͖ͬΓ͍ͯ͘͠ɻ
    ˠߦಈཤྺ͕஝ੵ͞ΕΔʹͭΕɼίϯςϯπϕʔε͔ΒߦಈཤྺϕʔεͷਪનʹҠߦ͍ͯ͘͠ɻ
    

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    ϢʔβͷϥΠϑαΠΫϧ
    w ϢʔβͷϥΠϑαΠΫϧ͕୹͘ɼϢʔβͷߦಈʹجͮ͘҉໧తͳϢʔβͷᅂ޷৘ใ͕ू·Γʹ͍͘ɻ
    w ʮγΰτ୳͠ʯҎ֎ͷจ຺ͷػೳ
    w ʮ'FFEʢϒϩάػೳʣʯ΍ʮ.FFUVQʢΠϕϯτืूػೳʣʯͳͲͷɼΑΓΧδϡΞϧʹར༻Ͱ͖Δػೳ΋ఏڙ͍ͯ͠Δɻ
    w ͭͳ͕Γ؅ཧΞϓϦʮ8BOUFEMZ1FPQMFʯͱ͍͏ɼస৬ʹؔ܎ͳ͘೔ৗ͔Βར༻͢ΔΞϓϦ΋ఏڙ͍ͯ͠Δɻ
    ˠʮγΰτ୳͠ʯͱ͍͏Ұ࣌తͳ׆ಈҎ֎ͷจ຺ʹ͓͚Δ༷ʑͳߦಈཤྺ͕஝ੵ͞ΕΔɻ
    w ʮΧδϡΞϧͳձࣾ๚໰ʯͷαʔϏεͳͷͰɼʮγΰτ୳͠ʯͷจ຺Ͱ΋ͦ΋ͦ΋ϥΠϑαΠΫϧ͕௕͍
    w స৬ҙཉͷߴ·Δલ͔ΒϢʔβ͕ొ࿥ͯ͘͠Ε͍ͯΔ͜ͱ΋ଟ͍ɻ
    w స৬ޙͰ͋ͬͨͱͯ͠΋ɼؾܰʹձࣾ๚໰͕Ͱ͖ΔαʔϏεʢΛ໨ࢦ͍ͯ͠Δʣɻ
    ˠʮγΰτ୳͠ʯͱ͍͏Ұ࣌తͳ׆ಈͷจ຺ʹ͓͍ͯ΋ൺֱత௕͍ظؒͷߦಈཤྺ͕஝ੵ͞ΕΔɻ
    ˠෳ਺ͷػೳͰͷཤྺΛ૊Έ߹ΘͤͯҙਤΛ἞ΈऔͬͨΓɼ࣌ؒͰॏΈ෇͚Λ͢ΔͳͲ޻෉͢Δɻ
    w ༷ʑͳจ຺ػೳ΍Ϟνϕʔγϣϯͷߴ͞Ͱར༻͞ΕΔαʔϏε͔ͩΒͦ͜ɼߦಈཤྺͷѻ͍͕೉͍͠ɻ
    w .FFUVQػೳͰاۀʹԠื͔ͨ͠Βͱ͍ͬͯɼͦͷاۀʹస৬ͷจ຺Ͱڵຯ͕͋Δͱ͸ݶΒͳ͍ɻ
    w ಉ͡ʮԠืʯͰ΋ɼస৬͍ͨ͠Ԡืͳͷ͔ͨͩڵຯ͕͋Δ͔Β࿩Λฉ͍ͯΈ͍ͨԠืͳͷ͔Ͱ͸શ͘ҙຯ͕ҧ͏ɻ
    

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    ϢʔβͷγεςϜ಺ʹ͓͚Δߦಈͷ࢟੎
    w ೳಈతͳϢʔβͱडಈతͳϢʔβ͕͍ΔɻडಈతͳϢʔβ͸ਪન͞Εͳ͍ͱ੒ޭମݧΛಘΒΕͳ͍ɻ
    w ʮԠืʯΛ͢Δ͜ͱ͕໨తͳϢʔβͱʮεΧ΢τʯΛड͚औΔ໨తͷϢʔβ͕ࠞࡏ͢Δɻ
    w ʮεΧ΢τʯΛड͚औΔ໨తͷडಈతͳٻ৬ऀϢʔβ͸اۀϢʔβͷεΧ΢τػೳͰਪન͞Εͳ͍ݶΓϚονϯά͸ੜ·Εͳ
    ͍ɻ
    w ҰํͰɼͨ͘͞ΜʮԠืʯͯ͘͠ΕΔೳಈతͳٻ৬ऀϢʔβͷํ͕৘ใ΋ͨ͘͞Μ͋ΔͨΊɼاۀϢʔβʹରͯ͠΋ൺֱత࣭
    ͷߴ͍ਪન͕ՄೳͰ͋Δɻ
    ˠೳಈతͳϢʔβͱडಈతͳϢʔβ͕ਪનʹؚ·ΕΔׂ߹Λ޻෉͢Δɻ
    w डಈతͳϢʔβͷதʹ͸ɼͦ΋ͦ΋શ͘Ϟνϕʔγϣϯ͕ͳͯ͘ͲΜͳεΧ΢τΛड͚औͬͯ΋ฦ৴
    ͠ͳ͍Α͏ͳϢʔβ΋Ұఆ਺ଘࡏ͢Δɻ
    w ਪન͕ѱ͍ͷ͔Ϟνϕʔγϣϯ͕௿ͯ͘ฦ৴͢Δؾ͕ͳ͍ͷ͔ͷ۠ผ͸೉͍͠ɻ
    ˠड͚औͬͨεΧ΢τ΁ͷฦ৴཰΍αʔϏε಺ͷΞΫςΟϒ཰ͳͲͰϞνϕʔγϣϯΛਪଌͯ͠׆༻͢Δɻ
    

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    ਪનγεςϜͷߏங
    User(Recruiter/Company)
    User(Job Seeker)
    some models
    ༷ʑͳαʔϏεಛ༗ͷॲཧ
    Good Recommendations
    ༷ʑͳ޻෉ΛڽΒͨͨ͘͠͞Μͷಛ௃ྔ
    ࠓޙͷਓੜʹؔΘΔΑ͏ͳαʔϏεͰ͋ΔͨΊ
    'BJSOFTTͷ͜ͱ΋ҙࣝͨ͠ಛ௃ྔબ୒
    Ұఆͷઆ໌ੑ͕ٻΊΒΕΔ͜ͱΛ
    ߟྀͨ͠NPEFMͷબ୒
    ޿ࠂ࿮ɼεύϜϢʔβɼॴଐͯ͠
    ͍Δձࣾͷืू͸ग़͞ͳ͍ɼFUD
    ৽͍͠ϩδοΫͷ࡞੒࣌ʹ͸"#ςετ΍
    *OUFSMFBWJOHͳͲͰΦϯϥΠϯςετΛ࣮ࢪ
    ৽͍͠ϩδοΫΛαʔϏεͰΦϯϥΠϯςετ͢Δલ
    ʹɼաڈσʔλΛ༻͍ͯΦϑϥΠϯςετΛ࣮ࢪ͢Δɻ
    ϓϩϑΟʔϧɼߦಈཤྺ
    ධՁࢦඪʹجͮ͘ఆྔධՁ͚ͩͰ͸ͳ͘ɼ࣮ࡍʹਓͷ໨Ͱ
    ݟ͓͔͍ͯ͠ਪનʹͳ͍ͬͯͳ͍ͷ͔ఆੑධՁ΋ߦ͏ɻ
    ϦϦʔεޙ΋ɼֶश͕͏·͘ߦΘΕ͍ͯΔ͔ɼ௥͍ͬͯΔ
    ࢦඪ͸ͲͷΑ͏ʹมԽ͍ͯ͠Δ͔ͳͲΛ؂ࢹ͢Δɻ
    ఆੑධՁ΋ఆظతʹߦ͏ɻࣾһ͕໨ͰݟͨΓɼ
    ੈͷதͷ੠ʢ5XJUUFSʣΛर͏ɻ
    

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    ͓ΘΓʹ
    ΢ΥϯςουϦʔɿʮγΰτͰίίϩΦυϧͻͱΛ;΍͢ʯ
    w ʮγΰτ͸໘ന͍΋ͷͩʯͱ͍͏ߟ͑Λ౰ͨΓલʹɻ
    w ձࣾ๚໰ΞϓϦʮ8BOUFEMZ7JTJUʯͭͳ͕Γ؅ཧΞϓϦʮ8BOUFEMZ1FPQMFʯ
    ૬ޓਪનγεςϜɿʮαʔϏε಺ͷϢʔβΛޓ͍ʹਪન͢ΔγεςϜʯ
    w ैདྷͷਪનγεςϜͱҟͳΔ༷ʑͳಛ௃΍՝୊ɻ
    ‣ ਪનΛड͚ΔϢʔβ TVCKFDU
    ͱਪન͞ΕΔϢʔβ PCKFDU
    ͷ྆ํͷᅂ޷͕Ұகͯ͠ॳΊͯਪન͕੒ޭ͢Δɻ
    ‣ TVCKFDUଆͷϢʔβࣗ਎͕૬ޓਪનγεςϜͰ͋Δ͜ͱΛೝ্ࣝͨ͠ͰɼPCKFDUଆͷϢʔβͷ͜ͱΛߟ͑ͯߦಈ͢Δɻ
    ‣ Ϣʔβ͕ࣗ਎Ͱఏڙ͢Δ໌ࣔతͳϓϩϑΟʔϧ΍ᅂ޷৘ใ͕๛෋͕ͩɼͦΕΒ͕ਖ਼͍͠ͱ͸ݶΒͳ͍ɻ
    ‣ ϢʔβͷϥΠϑαΠΫϧ͕୹͘ɼϢʔβͷߦಈʹجͮ͘҉໧తͳϢʔβͷᅂ޷৘ใ͕ू·Γʹ͍͘ɻ
    ‣ ೳಈతͳϢʔβͱडಈతͳϢʔβ͕͍ΔɻडಈతͳϢʔβ͸ਪન͞Εͳ͍ͱ੒ޭମݧΛಘΒΕͳ͍ɻ
    ʮ8BOUFEMZ7JTJUʯʹ͓͚Δཧ૝ͷϚονϯάΛ࣮ݱ͢Δ૬ޓਪનγεςϜ
    w ૬ޓਪનγεςϜಛ༗ͷಛ௃΍՝୊Λߟྀͭͭ͠ɼ༷ʑͳ޻෉Λࢪ͢ɻ
    w 'BJSOFTT΍આ໌ੑͳͲɼߟ͑Δ͜ͱ͸ͨ͘͞Μ͋Δɻ
    w ΑΓΑ͍ਪનͷͨΊʹ͸ఆྔతͳධՁ͚ͩͰ͸ͳ͘ɼఆੑతͳධՁ΋ඞਢɻ
    

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    3FGT
    • (Pizzato 2010) Luiz Pizzato, Tomek Rej, Thomas Chung, Irena Koprinska, and Judy Kay. 2010. RECON: a reciprocal recommender for online
    dating. Proceedings of the fourth ACM conference on Recommender systems P. 207-214.
    • (Pizzato 2012) Luiz Pizzato, Tomasz Rej, Joshua Akehurst, Irena Koprinska, Kalina Yacef, and Judy Kay. 2012. Recommending people to
    people: the nature of reciprocal recommenders with a case study in online dating. User Model User-Adap Inter (2013) 23: 447.
    • (Xia 2015) Peng Xia, Benyuan Liu, Yizhou Sun, and Cindy Chen. 2015. Reciprocal Reciprocal recommendation System for Online Dating.
    Proceedings of the 2015 IEEE/ACM International Conference on Advances in Social Networks Analysis and Mining P. 234-241.
    • (Neve 2019) J Neve, I Palomares.2019. Latent Factor Models and Aggregation Operators for Collaborative Filtering in Reciprocal
    Recommender Systems Proceedings of the 13th ACM Conference on Recommender Systems, 219-227.
    

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