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©2022 Wantedly, Inc. ձࣾ๚໰Ξ プ ϦʮWantedly Visitʯ
 ʹ͓͚ΔਪનγεςϜ։ൃࣄྫ JSAI2022 ΠϯμετϦΞϧηογϣϯ3 14.June.2022 - ߹ాपฏʢ΢ΥϯςουϦʔגࣜձࣾʣ

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©2022 Wantedly, Inc. 1. ͸͡Ίʹ • ձࣾͱϓϩμΫτ঺հ • ΞΧσϛΞʹ͓͚Δ׆ಈ 2. ձࣾ๚໰ΞϓϦʮWantedly Visitʯʹ͓͚ΔਪનγεςϜ։ൃࣄྫ • ϢʔβͷڵຯΛ༻͍ͨਪન • ૬ޓਪનγεςϜ • ืूը૾Λ༻͍ͨਪન ໨࣍

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©2022 Wantedly, Inc. ࣗݾ঺հ ߹ా पฏ (Shuhei Goda) ✓ ΢ΥϯςουϦʔגࣜձࣾ σʔλαΠΤϯςΟετ ✓ Kaggle Master @hakubishin3 @jy_msc

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©2022 Wantedly, Inc. ձࣾ঺հ "γΰτͰίίϩΦυϧͻͱΛ;΍͢" "CREATE A WORLD WHERE WORK DRIVES PASSION"

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©2022 Wantedly, Inc. ձࣾ๚໰ΞϓϦ Wantedly Visit

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©2022 Wantedly, Inc. ΞΧσϛΞʹ͓͚Δ׆ಈ

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©2022 Wantedly, Inc. ࠃࡍֶձ΁ͷௌߨࢀՃ / ࿦จಡΈձΠϕϯτͷاըӡӦ

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©2022 Wantedly, Inc. ֶձซઃίϯϖςΟγϣϯͰͷೖ৆ɾ࿦จ౤ߘɾൃද RecSys’20 WSDM’21 SIGIR’21

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©2022 Wantedly, Inc. ࠃ಺ֶձ΁ͷڠࢍ / ൃද https://www.ai-gakkai.or.jp/jsai2022/sponsor DEIM2021 DEIM2022 JSAI2022 https://db-event.jpn.org/deim2021 https://event.dbsj.org/deim2022/

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©2022 Wantedly, Inc. ձࣾ๚໰ΞϓϦʮWantedly Visitʯ
 ʹ͓͚ΔਪનγεςϜ։ൃࣄྫ

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©2022 Wantedly, Inc. ΢ΥϯςουϦʔʹ͓͚Δਪનͷॏཁੑ • ࣌୅ͷมԽʹ߹Θͤͯ࠷దͳϚονϯάΛఏڙ͠ଓ͚Δ ➡ ϓϥοτϑΥʔϜΛར༻͢ΔϢʔβن໛ɺاۀن໛ͷ֦େ ➡ ೔ʑมԽ͠ଓ͚ΔϫʔΫΧϧνϟʔʢϦϞʔτϫʔΫɺ෭ۀχʔζͷ૿Ճ ͳͲʣ ొ࿥Ϣʔβ਺ ొ࿥اۀ਺

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©2022 Wantedly, Inc. ϢʔβͷڵຯΛ༻͍ͨਪન ڵຯબ୒ը໘ • Ϣʔβ͕બ୒ͨ͠ʮڵຯʯʹج͍ͮͯϢʔβʹ࠷దͳืूΛਪન͢ΔػೳΛ
 ϦϦʔε ➡ ʮ৬छʯͳͲैདྷͷϑΟϧλϦϯάػೳ͚ͩͰ͸
 ग़ձ͑ͳ͔ͬͨืूͱग़ձ͑ΔΑ͏ʹ ➡ A/BςετͰطଘͷ࢓૊ΈΑΓ΋֤छKPI͕༗ҙʹվળ
 ͍ͯ͠ΔͷΛ֬ೝɺݱࡏ΋ӡ༻Λଓ͚͍ͯΔ

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©2022 Wantedly, Inc. എܠ • ͜Ε·ͰϢʔβ͸ʮ৬छʯΧςΰϦͰืूΛ୳͍͕ͯͨ͠ɺ৬छΛબ΂ͳ͍ ਓɺ৬छҎ֎ͷ࣠ͰγΰτΛ୳͍ͨ͠ਓ͸ଟ͍ ➡ γΰτ୳͠ͷ࣠ͷཁૉͰ͋ΔʮڵຯʯΛෳ਺બͿ͜ͱͰؾʹͳΔืूͱग़ձ͑ΔମݧΛ࣮ݱ γΰτ୳͠ͷ࣠ͱͦͷཁૉͱͳΔʮڵຯʯͷҰྫ

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©2022 Wantedly, Inc. ڵຯબ୒ը໘ͷ࡞੒ • ڵຯબ୒ը໘Ͱग़͢ڵຯͷબఆ ➡ ᶃڵຯͷநग़: Ͳ͏͍͏ݴ༿ΛϢʔβʹબ ΜͰ΋Β͏͔ΛܾΊΔ ➡ ᶄڵຯͷΫϥελϦϯά: Ϣʔβ͕બΜͩ ڵຯͷपΓʹͲ͏͍͏ڵຯΛग़ݱͤ͞Δ ͔ΛܾΊΔ اۀͷืूͷৄࡉςΩετ ᶃڵຯͷநग़ ʮMLOpsʯ ʮ౷ܭతݕఆʯ ʮΠϯλʔϯʯ ʮඒ༰ʯ ʮDeep Learningʯ ʮVRσβΠϯʯ ʮσʔλαΠΤϯςΟετʯ … ᶄڵຯͷΫϥελϦϯά Ϋϥελͷ࡞੒ͱ୅ද఺ͷܾఆΛ࠶ؼతʹߦ͍ɺ
 ֊૚ߏ଄Λߏங ※Χοί಺ͷ਺ࣈ͸Document Frequencyʹ૬౰͢Δ΋ͷ

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©2022 Wantedly, Inc. ϢʔβͷڵຯΛ༻͍ͨਪનͷ࡞੒ • Ϣʔβͷબ୒ͨ͠ڵຯΛ༻͍ͨਪનγεςϜ ➡ ༧Ίڵຯ͝ͱʹϥϯΩϯάΛੜ੒͓͖ͯ͠ɺϦΫΤετ࣌ʹϢʔβͷબ୒ͨ͠ڵຯʹ֘౰͢ ΔϥϯΩϯάΛऔಘ͠ɺϥϯΩϯάείΞΛՙॏฏۉ͢Δ

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©2022 Wantedly, Inc. ૬ޓਪનγεςϜ • ձࣾ๚໰Ξ プ ϦʮWantedly Visitʯͷ デ ʔλ で ݟΔ૬ޓਪનγεςϜ ʢDEIM2021 / DEIM2022 Ͱൃදʣ

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©2022 Wantedly, Inc. ૬ޓਪનγεςϜͷ֓ཁ • αʔϏε಺ͷϢʔβΛޓ͍ʹਪન͢ΔγεςϜ User Item ैདྷͷҰൠతͳਪનγεςϜ ૬ޓਪનγεςϜ User(Female) User(Male) User(Job Seeker) User(Recruiter/Company) ex. Amazon, Netflix ex. Tinder, Pairs ex. Wantedly, LinkedIn ਪન ਪન ਪન

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©2022 Wantedly, Inc. ૬ޓਪનγεςϜʹ͓͚Δ੒ޭମݧ • ޓ͍ͷᅂ޷͕Ұகͯ͠ॳΊͯਪન͕”੒ޭ”ͨ͜͠ͱʹͳΔ User Item ैདྷͷҰൠతͳਪનγεςϜ ૬ޓਪનγεςϜ User User ߪೖ ⭕ ⭕ Like Nope Like Like

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©2022 Wantedly, Inc. Ϟνϕʔγϣϯ • δϣϒϚονϯάαʔϏεʹ͓͚Δݚڀ΍ಋೖࣄྫ͸ଟ͘ͳ͍ ➡ طଘख๏ʹ͓͚ΔධՁ࣮ݧ͸σʔςΟϯάαʔϏεͷσʔλΛ༻͍ͯߦΘΕΔ͜ͱ͕ଟ͍ ➡ δϣϒϚονϯάαʔϏεͷ࿮૊ΈͰ͋ΔWantedly Visit ͷ࣮σʔλΛ࢖࣮ͬͨݧʹҰఆͷ Ձ஋͕͋Δͱߟ͑Δ

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©2022 Wantedly, Inc. ࣮ݧ݁Ռ • ձࣾ๚໰ΞϓϦ Wantedly Visit ͷ࣮σʔλΛར༻ͨ͠ݕূ࣮ݧ ➡ Wantedly Visit ʹ͓͚ΔݸਓϢʔβͱاۀϢʔβͷϚονϯάͷ੒ޭ༗ແΛ༧ଌ͢ΔλεΫ ➡ γεςϜ಺ͷ༷ʑͳϢʔβͷੑ࣭Λߟྀͨ͠վળख๏ʹΑΓੑೳͷ޲্Λ֬ೝ AUC طଘख๏ᶃʢRCFʣ 0.623 طଘख๏ᶃʢLFRRʣ 0.566 طଘख๏ᶄʢLFRR + Scaler + Negʣ 0.713 طଘख๏ᶄ + Bias 0.780 طଘख๏ᶄ + Bias + LR(preds) 0.772 طଘख๏ᶄ + Bias + LR(preds + one-hot) 0.803 طଘख๏ᶄ + Bias + LR(preds + one-hot + interaction) 0.817 طଘख๏ͱఏҊख๏ͷൺֱ݁Ռ

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©2022 Wantedly, Inc. ืूը૾Λ༻͍ͨਪન • ձࣾ๚໰ΞϓϦʮWantedly Visitʯʹ͓͚Δืूը૾͕Ϣʔβʔʹ༩͑ΔӨڹ ʢDEIM2022 Ͱൃදʣ

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©2022 Wantedly, Inc. എܠ • ืूʹఴ෇͢Δը૾΁ͷͩ͜ΘΓ ➡ ձࣾͷϛογϣϯ΍ͦ͜Ͱಇ͘ਓͷ૝͍ͳͲɺݴޠԽ͕೉͍͠৘ใ͕൓ө͞Ε͍ͯΔ ➡ Ϣʔβʔ͕ࣗ෼ʹ߹ͬͨڞײͰ͖ΔձࣾΛ୳͢ͷʹ༗༻ͩͱߟ͍͑ͯΔ ը૾͕໨ཱͭUIͷఏڙʢࠨ:τοϓϖʔδɺӈ:ৄࡉϖʔδʣ ίϯςϯπɾΫΦϦςΟɾΨΠυϥΠϯ

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©2022 Wantedly, Inc. ࣮ݧ಺༰ • Ϣʔβʔ͕ࣗ਎ʹ߹ͬͨืूΛ୳࣌͢ʹը૾͕ϢʔβͷߦಈʹͲ͏Өڹ͍ͯ͠ Δ͔Λ஌ΔͨΊʹɺը૾Λ࢖ͬͯϢʔβͷߦಈΛ༧ଌ͢Δ͜ͱͰఆྔతʹධՁ ➡ ༧ଌର৅͸̎छྨɺʮτοϓϖʔδͰͷΫϦοΫߦಈʯͱʮৄࡉϖʔδͰͷԠืߦಈʯ Ϣʔβ͕ืू΁Ԡื͢Δ·Ͱͷεςοϓ τοϓϖʔδ ৄࡉϖʔδ ΫϦοΫߦಈ Ԡืߦಈ Company

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©2022 Wantedly, Inc. ࣮ݧ݁Ռ τοϓϖʔδͰͷΫϦοΫߦಈͷ༧ଌ݁Ռ ৄࡉϖʔδͰͷԠืߦಈͷ༧ଌ݁Ռ • ืूը૾Λ࢖ͬͯϢʔβͷԠืʹࢸΔ·ͰͷߦಈΛ༧ଌͰ͖͍ͯΔ ➡ ΫϦοΫߦಈ͸༧ଌͰ͖͍ͯΔҰํͰɺԠืߦಈ͸༧ଌͰ͖ͳ͍ ➡ ืूͷৄࡉ಺༰Λ͔ͬ͠ΓಡΜͰ͔ΒԠื͢Δ͔൱͔Λҙࢥܾఆ͍ͯ͠Δ

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©2022 Wantedly, Inc. ࠷ޙʹ • ΢ΥϯςουϦʔʹ͓͍ͯਪનγεςϜͷॏཁੑ͸ߴ͍ • αʔϏεΛར༻͢ΔϢʔβͷཧ૝తͳϚονϯάΛ࣮ݱ͢ΔͨΊʹɺٕज़తʹ ໘നͯ͘ϋΠϦλʔϯͷՄೳੑ͕͋ΔνϟϨϯδϯάͳࢪࡦ΋औΓ૊ΜͰ͍Δ