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©2020 Wantedly, Inc. ʮσʔλੳʯͷղ૾Λ্͍͛ͨ ࢝ɼʮσʔλੳʯʹࢥ͍ΛͤͯΈͨɻ Data Gateway Talk vol.5 16.Jan.2020 - Yuya Matsumura @yu-ya4
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©2020 Wantedly, Inc. ✓ Yuya Matsumura ✓ Wantedly, Inc. Recommendation Team ✓ Data Science, Team Lead ✓ Interested in Information Retrieval, Machine Learning Self-Introduction @yu-ya4 @yu__ya4
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©2020 Wantedly, Inc. ʮσʔλੳʯ͏·͍͍ͬͯ͘·͔͢ʁ
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©2020 Wantedly, Inc. ͜Μͳܦݧ͋Γ·ͤΜ͔ʁ
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©2020 Wantedly, Inc. • ৽ઃͷʮσʔλੳʯνʔϜʹϏδωενʔϜ͔Βͷ SQL ࡞ґཔ͕ࡴ౸͠ ͯຊདྷߦ͍͍ͨʮσʔλੳʯ͕ߦ͑ͳ͍ɻ • ʮઌ݄ͷചΓ্͍͛͘Β͔ʁʯͱฉ͔ΕͯʮʓʓສԁͰ͢ɻʯͱճͨ͠ ΒɼʮͰɼ݁ہͦΕͬͯͲ͏ͳͷ…ʁʯͱϚωʔδϟʹݴΘΕͯ͠·ͬͨɻ • Kaggle ͰιϩۜΛ֫ಘ͍ͯͨͨ͠Ίेͳʮσʔλੳʯͷྗ͕͋Δͱ அͯ͠ʮσʔλੳʯνʔϜͷΠϯλʔϯʹݺΜֶͩੜ͕͍·͍ͪ׆༂Ͱ͖ ͳ͔ͬͨɻ ͍ۤܦݧͨͪʢϑΟΫγϣϯʣ
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©2020 Wantedly, Inc. ʮσʔλੳʯͱ͍͏Ϟϊͷද͢ҙຯ͕ᐆດͳͨΊɼਓʹΑͬ ͯʮσʔλੳʯʹٻΊΔظʹζϨ͕ੜ͡Δɻ
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©2020 Wantedly, Inc. ͋ΔࣄΛղͯ͠ɺͦΕΒΛཱ͍ͤͯ͞Δɾཁૉɾଆ ໘Λ໌Β͔ʹ͢Δ͜ͱɻ ʮσʔλੳʯͱʁ: ʰࣙԓʱʹΑΔͱ… ʮੳʯ
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©2020 Wantedly, Inc. ʮσʔλੳʯͱʁ: Α͘ݟ͔͚Δͭ σʔλαΠΤϯςΟετʹٻΊΒΕΔεΩϧηοτ http://www.datascientist.or.jp/files/news/2014-12-10.pdf
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©2020 Wantedly, Inc. ʮσʔλੳʯͱʁ: ݕࡧͯ͠Έͨ όζϫʔυΛײ͡Δ
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©2020 Wantedly, Inc. ઈରతͳਖ਼ղͳΜͯʢ͖ͬͱʣͳ͍ͷͰࣗͳΓʹཧղɾղ ऍͯ͠ղ૾Λ্͛Δ͜ͱ͕ॏཁ͔ͳͱࢥͬͨɻ ͷͰɼ࢝ʹʮσʔλੳʯʹର͍ͯ͠Ζ͍Ζͱࢥ͍Λ ͍ͤͯ·ͨ͠ɻ ʮσʔλੳʯͱʁ: ਖ਼ղͳΜͯͳ͍
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©2020 Wantedly, Inc. @yu-ya4 ͕Ұ൪εοΩϦͨ͠ʮσʔλੳʯͷհ ※Ҿ༻͍ͯ͠·͕ࣗ͢ͳΓͷղऍೖΕͯ·͢
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©2020 Wantedly, Inc. ʰA or Bʱͱ͍͏͍ʹରͯ͠ղΛग़͢͜ͱ ʮσʔλੳʯͱʁ: Hikaru Kashida ͞Μ (@hik0107) ͷ note https://note.com/hik0107/n/ne240d47572c9?magazine_key=m3bf0289df2d6 ʮੳʯͱͻͱ͜ͱͰ͍͏ͱ…
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©2020 Wantedly, Inc. ʮYes or Noʯ ʰA or Bʱͱ͍͏͍ʹରͯ͠ղΛग़͢͜ͱ ʰA or Bʱͱ͍͏͍ ղͷܗࣜ ʮ͜ͷ༧ଌϞσϧͰ࡞ΒΕΔϥϯΩϯάࠓΑΓྑ͍ʁʯ ʮ͜ͷUIมߋࢪࡦྑ͔ͬͨʁʯ ʮimpression or click or …ʯ ʮϢʔβͷܧଓͱͬͱ૬ؔͷߴ͍ߦಈʁʯ ʮYes or Noʯ
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©2020 Wantedly, Inc. ʮ͜Ε·ͰͷࢪࡦͰ͍͍ͤͥ105%ʹ͔͠ͳΒͳ͔ͬͨʯ ʮࠓ݄ͷඪ PV Λ140%ʹ͢Δ͜ͱʯ ʮࠓ݄தʹࢪࡦ͋ͱ3࣮ͭࢪͰ͖Δʯ ʰA or Bʱͱ͍͏͍ʹରͯ͠ղΛग़͢ͷʹඞཁͳཁૉ ࣄ࣮ = ࣈ அج४ ʮPV ͕ 120% ʹͳͬͨʯ ʰA or Bʱͱ͍͏͍ ʮ͜ͷUIมߋࢪࡦྑ͔ͬͨʁʯ ղ ʮYesʯ
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©2020 Wantedly, Inc. ʮࠓظͷඪϢʔβͷܧଓΛ্͛Δ͜ͱʯ ʮϢʔβͷܧଓͱ click ڧ͍ਖ਼ͷ૬ؔΛ࣋ͭʯ ʮաڈʹΦϑϥΠϯධՁʹ͓͍ͯ MAP ͕105%ʹͳͬͨϥ ϯΩϯάʹΑͬͯclick ͕110%ʹͳͬͨ͜ͱ͕͋Δʯ ʰA or Bʱͱ͍͏͍ʹରͯ͠ղΛग़͢ͷʹඞཁͳཁૉ ࣄ࣮ = ࣈ அج४ ʮΦϑϥΠϯධՁʹ͓͍ͯ click Λਖ਼ղͱͨ͠ MAP ͕ 110% ʹͳͬͨʯ ʰA or Bʱͱ͍͏͍ ʮ͜ͷ༧ଌϞσϧͰ࡞ΒΕΔϥϯΩϯά ࠓΑΓྑ͍ʁʯ ղ ʮYesʯ
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©2020 Wantedly, Inc. 1. ʰA or Bʱͱ͍͏͍ 2. ࣄ࣮ = ࣈ 3. அج४ 4. ղ ·ͱΊ:ʮσʔλੳʯͷཁૉ
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©2020 Wantedly, Inc. 1.ʰA or Bʱͱ͍͏͍ • ͜Ε͕ͳ͍ͱͦͦʮσʔλੳʯͰ͖ͳ͍ɻ • Ϗδωε՝Λੳ՝ʹམͱ͠ࠐΉ༁ऀͱ͔ݴΘΕΔͭʁϏδωεྗɻ • நతͳʢࡶͳʣ͍Λ͜͜·ͰϒϨΠΫμϯͯ͠ઃܭ͢Δඞཁ͕͋Δ͜ͱɻ ຊʹΓ͍ͨ͜ͱΛਪ͠ྔΔೳྗ͕ඞཁɻ • ex.ʮઌ݄ͷച্͍͘Βʁʯ-> ʮച্৳ͼ͍ͯΔͱݴ͑Δͷ͔ʁʯ • ͪΖΜɼͦͦσʔλΛूܭͯ͠ʮࣄ࣮ʹࣈʯΛग़͚ͩ͢Ͱ͍͍߹ɻ • ex. ϏδωενʔϜ͔ΒͷSQL࡞ґཔʢͷҰ෦ʣ
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©2020 Wantedly, Inc. 2. ࣄ࣮ = ࣈ • ଘࡏ͢Δ࣮σʔλʹجͮ͘٬؍తࣄ࣮ɻҰ൪ੳͬΆ͍(?)ɻ • ͍ΘΏΔखΛಈ͔͢ೳྗ͕ඞཁɻ • SQL Ͱσʔλͷूܭ͢ΔೳྗɼKaggle (modeling)ྗɼetc. • σʔλΤϯδχΞϦϯάྗͱ͔͜͜ʹೖͬͯ͘Δ͔ʁਖ਼͘͠ʮࣄ࣮ = ࣈʯΛ ಋग़Ͱ͖ΔڥΛదʹ࡞ΔͬͯҙຯͰɻ
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©2020 Wantedly, Inc. 3. அج४ • ීวతͳͷͰͳ͘ɼͦͷʹ͓͚Δ͍͔ͭ͘ͷલఏ݅ʹج͖ͮಋग़͞ΕΔɻ • ͚ͬ͜͏͜͜ΛΕ͕ͪɻ • υϝΠϯࣝॏཁ • ཧྗ • ΈΜͳͷೲಘײେɻ • ͜͜Λͳ͍͕͠Ζʹ͢ΔͱɼޡͬͨҙࢥܾఆΛͯ͠͠·͏ɻ͍ɻ
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©2020 Wantedly, Inc. 4. ղ • ʮʰA or Bʱͱ͍͏͍ʯͷճ • ʮஅج४ʯʹج͖ͮʮࣄ࣮ = ࣈʯ͔ΒʮʰA or Bʱͱ͍͏͍ʯʹରͯ͠ಋग़ ͢Δɻ • ՄࢹԽͳͲΛۦͯ͠આ໌Մೳͳܗʹ͢Δɻਓʹ͑Δೳྗ͕ඞཁɻ • ผͷԾઆɼ࣍ͷʮʰA or Bʱͱ͍͏͍ʯͷώϯτʢʹʮσʔλੳʯͷλωʣΛ ݟग़͢ೳྗ͕͋Δͱڧ͍ɻ
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©2020 Wantedly, Inc. ͜ΕΒ4ͭͷཁૉΛʮσʔλੳʯʹؔ͢ΔීஈͷۀνʔϜฤɼ ҭɼ࠾༻ͳͲͷࡍʹҙࣝͯ͠ɼͲͷཁૉʹ͖͢ͳͷ͔ߟ͑Ε ʮσʔλੳʯͷظͷζϨΛݮΒͤΔ͔ʁ ·ͱΊ:ʮσʔλੳʯͷཁૉ 1. ʰA or Bʱͱ͍͏͍ 2. ࣄ࣮ = ࣈ 3. அج४ 4. ղ
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©2020 Wantedly, Inc. ͜ΕΒ4ͭͷཁૉΛʮσʔλੳʯʹؔ͢ΔීஈͷۀνʔϜฤɼ ҭɼ࠾༻ͳͲͷࡍʹҙࣝͯ͠ɼͲͷཁૉʹ͖͢ͳͷ͔ߟ͑Ε ʮσʔλੳʯͷظͷζϨΛݮΒͤΔ͔ʁ ·ͱΊ:ʮσʔλੳʯͷཁૉ 1. ʰA or Bʱͱ͍͏͍ 2. ࣄ࣮ = ࣈ 3. அج४ 4. ղ ※ࢲʹͱͬͯ͜ͷղऍ͕ͬ͘͠Γ͖͚ͨͩͰɼਖ਼ղͳ͍ɻ
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©2020 Wantedly, Inc. ʮσʔλੳʯͱ͍͏நతͳϞϊͷղ૾Λ্͛ͯʢࣗ ͳΓͷղऍͰ͍͍ͷͰʣ໌֬ͳఆٛΛ࣋ͯΕɼ͏গ͠ ʮσʔλੳʯͱ͏·͖ͭ͋͑͘Δ͔͠Ε·ͤΜɻ ࠓ͔͑ͨͬͨ͜ͱ
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©2020 Wantedly, Inc. ͞Βʹɼࣾͳ͍͠νʔϜʹ͓͍ͯʮσʔλੳʯͱ͍͏Ϟϊʹ ରͯ͠ڞ௨ͷೝࣝΛ࣋ͯͬͱͤʹͳΕΔ͔͠Ε·ͤΜɻ ࠓ͔͑ͨͬͨ͜ͱ(+α)
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