Wantedly におけるマッチング体験を最大化させるための推薦システム

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© 2024 Wantedly, Inc. ϚονϯάମݧͷϞσϧԽ Ϣʔβʔ اۀ 1. ίϯςϯπͷӾཡ 2. Ԡื 3. ϝοηʔδฦ৴ p(match = 1|u, c) = p(exam = 1|u, c) × p(apply = 1|u, c, exam = 1) × p(reply = 1|u, c, apply = 1) Ϣʔβʔ͸ͲͷاۀΛݟΔ͔ Ϣʔβʔʹͱͬͯ   اۀͷίϯςϯπ͸ັྗత͔ اۀʹͱͬͯ   ϢʔβʔͷϓϩϑΟʔϧ͸ັྗత͔ ※ຊൃද༻ʹ؆қԽ

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© 2024 Wantedly, Inc. αʔϏεͷ֦େʹ൐ͬͯັྗతͳاۀΛݟ͚ͭΔ͜ͱ͕ࠔ೉ʹ ● Ϣʔβʔ΍اۀͷ਺͕େ͖͘૿Ճ ● Ϣʔβʔ΍اۀͷଐੑ΍ᅂ޷ੑ͕ଟ༷Խ αʔϏεͷϑΣʔζ͕ਐΉதͰݦࡏԽ͢Δ՝୊ p(exam = 1|u, c) × p(apply = 1|u, c, exam = 1) × p(reply = 1|u, c, apply = 1) Ϣʔβʔ͸ͲͷاۀΛݟΔ͔ Ϣʔβʔʹͱͬͯ   اۀͷίϯςϯπ͸ັྗత͔ اۀʹͱͬͯ   Ϣʔβʔͷίϯςϯπ͸ັྗత͔ ͕͜͜େ͖ͳϘτϧωοΫʹ αʔϏε಺ͷෳࡶ౓͕૿͍ͯ͘͠   ͜ͱʹΑΔϛεϚονͷ૿Ճ

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© 2024 Wantedly, Inc. ਪનٕज़Λ׆༻͢Δ͜ͱͰϚονϯάΛੜΈग़͢ ● ͲͷϢʔβʔʹͲ͏͍͏اۀΛදࣔ͢Δͷ͔ ● ͲͷاۀʹͲ͏͍͏ϢʔβʔΛදࣔ͢Δͷ͔ දࣔΛ੍ޚ͢ΔͨΊͷιϦϡʔγϣϯ p(exam = 1|u, c, rec) × p(apply = 1|u, c, exam = 1) × p(reply = 1|u, c, apply = 1) Ϣʔβʔ͸ͲͷاۀΛݟΔ͔ Ϣʔβʔʹͱͬͯ   اۀͷίϯςϯπ͸ັྗత͔ اۀʹͱͬͯ   Ϣʔβʔͷίϯςϯπ͸ັྗత͔ ͜͜Λ੍ޚ͢Δ p(match = 1|u, c, rec) =

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© 2024 Wantedly, Inc. ૬ޓਪનγεςϜʢReciprocal Recommender Systemsʣ αʔϏε಺ͷϢʔβʔΛޓ͍ʹਪન͠߹͏γεςϜ ● ਪનΛड͚औΔϢʔβʔͱਪન͞ΕͨϢʔβʔͷ྆ํ͕ຬ଍ͯ͠੒ޭ ● ਪનΛड͚औΔϢʔβʔ͕ຬ଍͢Ε͹੒ޭ͢Δ item-to-user ਪનͱ͸   ੒ޭͷج४͕ҟͳΔ item-to-user ਪનͷ੒ޭ Ϣʔβʔ ΞΠςϜ ૬ޓਪનͷ੒ޭ ߪೖ Ԡื ฦ৴ Ϣʔβʔ اۀ ฦ৴ εΧ΢τ Ϣʔβʔ اۀ

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© 2024 Wantedly, Inc. 1. ϢʔβʔA→ϢʔβʔBͱɺϢʔβʔB→ϢʔβʔAͷ Preference Score Λਪ࿦ 2. ૬ޓͷ Preference Score Λू໿͢Δ ૬ޓਪનͷجຊతͳΞʔΩςΫνϟ User A to User B Preference Score User B to User A Preference Score Reciprocal Preference Score Aggregation Function ू໿ؔ਺͸ྫ͑͹ࢉज़ฏۉɺزԿฏۉɺௐ࿨ฏۉͳͲ   ྆ํͱ΋είΞ͕ߴ͚Ε͹ߴ͘ɺͲͪΒ͔௿͍ͱ௿͘ͳΔ   ੑ࣭Λ࣋ͭؔ਺͕ద੾ͱݴΘΕ͍ͯΔ ௐ࿨ฏۉ ࢉज़ฏۉ

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© 2024 Wantedly, Inc. Item-to-user ਪનΛ࠾༻͍ͯͨ࣌͠ظ͕͋ͬͨ ● ඃਪનϢʔβʔͷຬ଍౓Λఆٛͯ͠ద߹౓Λઃܭ͠ɺͦΕΛ࠷దԽ ͔ͭͯͷԠืͱεΧ΢τͷਪનʹ͍ͭͯ Ϣʔβʔ اۀ ԠืλεΫ εΧ΢τλεΫ اۀ Ϣʔβʔ ྫ͑͹ɺ   ɾϚονϯά=2   ɾϚονϯά੒ཱ͠ͳ͔ͬͨԠื=1   ɾԠื͠ͳ͍=0 ྫ͑͹ɺ   ɾϚονϯά=2   ɾϚονϯά੒ཱ͠ͳ͔ͬͨεΧ΢τ=1   ɾεΧ΢τ͠ͳ͍=0

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© 2024 Wantedly, Inc. ● ద߹౓͸ਓखͰઃఆ͍ͯ͠Δ͜ͱͰϚονϯά࠷దԽ͕ࠔ೉ʹ ● Ϛονϯά੒ཱͨ͠ΞΠςϜ͸ɺϚονϯά੒ཱ͠ͳ͍͚ͲԠืͨ͠   ΞΠςϜͷ2ഒຬ଍ͱ͢ΔɻͳΜͰ4ഒ͸ବ໨ʁ ● Ϟσϧ಺Ͱಛ௃ྔ͕ҙਤ௨Γʹ༗ޮతʹ࢖ΘΕͳ͍ ● ϚονϯάʹࢸΔ·Ͱͷεςοϓຖʹಉ͡ಛ௃ྔͰ΋ར༻ҙਤ͸ҟͳΔ ● ϚονϯάϞσϧΛ1ͭͷϞσϧʹԡ͠ࠐΊ͍ͯΔ Item-to-user ਪનͷ՝୊ ※ϓϩμΫτ՝୊͸ࠓճ৮Εͳ͍ Ϣʔβʔ اۀ 1. ίϯςϯπͷӾཡ 2. Ԡื 3. ϝοηʔδฦ৴ User to Company Preference Model ద߹౓

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© 2024 Wantedly, Inc. Item-to-user ਪન͔Β૬ޓਪન΁ ● ԠืͱεΧ΢τͱ΋ʹओཁKPI͕େ͖͘৳ͼͨ 🎉🎉🎉 ԠืͱεΧ΢τͷਪનվળΛ࣮ࢪ User to Company Preference Model User to Company Preference Model Company to User Preference Model Aggregation Function

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© 2024 Wantedly, Inc. ᅂ޷༧ଌ͠΍͍͢Ϣʔβʔͱͦ͏Ͱͳ͍Ϣʔβʔ͕͍Δ ● ೳಈతʹߦಈ͢ΔϢʔβʔ΋͍Ε͹ɺLIKE͕ૹΒΕΔ͜ͱΛ଴͍ͬͯΔ डಈతͳϢʔβʔ΋͍Δʢྫ͑͹ɺεΧ΢τ଴ͪͷϢʔβʔʣ ● ͨ͘͞ΜԠื͢ΔೳಈతͳϢʔβʔͷ΄͏͕ͨ͘͞Μ৘ใ͕͋ΔͷͰɺ ࣭ͷߴ͍ਪન͕Մೳ ● ٯʹɺडಈతͳϢʔβʔ͸͍ͬͨΜεΧ΢τΛड͚औΒͳ͍ݶΓɺৄࡉ ͳᅂ޷͸෼͔Βͳ͍ ݸʑͷᅂ޷༧ଌਫ਼౓ͷࠩҟ