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Exploratory勉強会 #18: 時系列予測(Prophet)を使った、コールセンターで...
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Kan Nishida
April 16, 2021
Technology
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Exploratory勉強会 #18: 時系列予測(Prophet)を使った、コールセンターでの受電数予測
Kan Nishida
April 16, 2021
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Transcript
࣌ܥྻ༧ଌ(Prophet)Λͬͨɺ ίʔϧηϯλʔͰͷडి༧ଌ גࣜձࣾΞαΠΞϯ Ӝɹప (Sr. Manager, Data Analytics)
ࣗݾհ: Ӝ ప • ݱ৬ɿגࣜձࣾΞαΠΞϯ • KDDI(au)ͷ͓٬༷͚อकαϙʔτ • յΕͨܞଳిͷަ •
͍ํαϙʔτ (ػछม࣌ͷσʔλҠߦɺ) • docomoɺUS 3େΩϟϦΞͰಉ༷ͷαʔϏε (άϧʔϓձࣾ) • ୲ྖҬ • ݱࡏɿίʔϧηϯλʔʹ͔͔Δίʔϧͷ༧ଌɾੳ • Ҏલɿձһɾࣄނ݅ͷ༧ଌɾੳ • લ৬ • ΥϧτɾσΟζχʔ • i-modeֹ݄ձһͷ༧ଌɾੳɺϚʔέςΟϯάROI • ͦΕҎ֎ɺੴ༉ձࣾ(ࡒɾϚʔέ)ɺίϯαϧ • ͜Μͳ͜ͱ͍ͬͯ·͢ɹ㱺㱺㱺
ͳͥडి༧ଌ͕େࣄ? • 3-4͔݄ઌ·Ͱͷडి༧ଌΛݩʹɺίʔϧηϯλʔͷΦϖϨʔλʔΛ֬ อ͠ɺγϑτஔ͢Δ • ༧ଌ΄Ͳి͕͔͔ͬͯ͜ͳ͍ 㱺 ɹਓ͕༨Δɻίετͷແବ • ༧ଌΑΓଟ͍ి͕͔͔ͬͯ͘Δ
㱺 ɹਓ͕Γͣɺܨ͕Βͳ͍ɻސ٬ຬͳͲͷԼ • ༧ଌਫ਼͕ɺίετɾ࣭ʹ݁
डిͷ࣍ਪҠ ࢝ ʹܹݮ Նʹ্ঢ ͨ·ʹ εύΠΫ
͜Μͳ༧ଌΛ࡞Γ͍ͨ
ݱࡏͷΓํͱ՝ • ख࡞ۀͷݻ·ΓͰɺ͕͔͔Δ • ݄୯Ґͷ༧ଌ (ձһ → ަ݅ → ίʔϧ)
• ୯Ґʹղ (༵ͷൺɺॕͷӨڹΛิਖ਼) • 30୯Ґʹղ • 3۠ɾ3͔݄Λɺຖ݄࡞ ɹ ɹɾɾɾ6000ηϧΛຒΊΔʂ • ༧ଌਫ਼Λ্͛Δ͜ͱͰɺ࣭Λམͱͣ͞ʹίετݮ͍ͨ͠ 㱺ExploratoryΛͬͯɺ࣌ܥྻ༧ଌ(ผ)ʹνϟϨϯδ͍ͨ͠
Prophet? https://exploratory.io/note/hideaki/Prophet-FAQ-3433248588798649 https://exploratory.io/note/hideaki/Prophet-4592228510059478 https://www.exploratory.io/note/kanaugust/25-Prophet-XNc0HtD6pH
͜ΕΛબͿ
Γ࢝Ίͯɺࠔͬͨ͜ͱ • िपظ͕ঃʑʹมΘΔ • िपظۙͷ࣮Λө͍ͤͨ͞ • ҰํͰɺτϨϯυपظͷͨΊ ʹɺظ࣮Λͬͨ༧ଌඞཁ 㱺ظͱظΛ߹͢Δ͔͠ͳ͍ 20
19 18
༧ଌ݁ՌͷΤΫεϙʔτͱ݁߹ िपظ1 पظ ॕޮՌ τϨϯυ 4/16 4/17 4/18
िपظ2 4/16 4/17 4/18 पظ ॕޮՌ τϨϯυ िपظ2 ༧ଌ 4/16 4/17 4/18 ظ࣮ΛͬͨɺProphet݁Ռ ظ࣮ΛͬͨɺProphet݁Ռ ࠨ֎෦݁߹
༧ଌͷܭࢉ िपظ͚ͩɺظ ࣮ͷ݁ՌΛར༻ ๏ͷ߹ (Ճ๏ҟͳΔ)
߹ͱͦͷଞ༧ଌɾ࣮ͱͷൺֱ ख࡞ۀ Prophet(ظͷΈ) ࣮
༧ଌਫ਼ɿMAE(ฏۉઈରޡࠩ) Ұ൪ਫ਼͕ߴ͍ ख࡞ۀ Prophet(ظͷΈ) Prophet(߹)
՝ΛࠀͰ͖͔ͨ? • ຖ݄ͷख࡞ۀΑΓָʹ࡞Ͱ͖Δ͔ɹˠͰ͖ͨ • ExploratoryͷதͰ࡞ۀ͕݁ • ༧ଌਫ਼Λ্͛ΒΕΔ͔ ɹˠͰ͖ͨ • MAE͕ɺ78.6
→ 51.3ͱݮগ • ࣍ͷ՝ • Πϕϯτϑϥά (࢝ɺ͓ຍɺ) • 30୯Ґͷ༧ଌ • ผϏδωεͷडి༧ଌɹɾɾɾ͋ͱ8000ηϧʂ
ExploratoryͷΑ͍ͱ͜Ζ ಋೖ ֶश ܧଓ Ռ ݚमඅͰ࢝ΊΒ ΕΔ (ϒʔτΩϟ ϯϓࢀՃͰϥΠ ηϯε1)
ݚमɿࣄલΦϦ Τϯςʔγϣϯɺ ϓϨθϯͷ࣭ සൟͳηϛ φʔɺνϟο τɺHow-toࢿ ྉɺόʔδϣϯ Ξοϓ ཁɿ ΩʔϘʔυγϣʔτΧοτ (άϥϑସɺUndo) ϊʔίʔυͰɺ ػցֶश୳ࡧ తੳΛ࣮ʹ ੜ͔ͤΔ