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ANNとナイーブベイズを使った雑な野球選手の成績予測 / Baseball player p...
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Shinichi Nakagawa
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July 22, 2020
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ANNとナイーブベイズを使った雑な野球選手の成績予測 / Baseball player performance prediction with Python
PyCon JP 2020で話す予定の話のダイジェストです.
kawasaki.rb #86 での練習試合.
#Python #DataScience #MLB #Baseball
Shinichi Nakagawa
PRO
July 22, 2020
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Transcript
ٿબखͷ༧ଌϞσϧΛ ͍͍ײ͡ʹ࡞ͬͯΈͨVer 1.0 Shinichi Nakagawa (@shinyorke) kawasaki.rb #86 7पͪΐͬͱLTେձ
Who am I ? • Shinichi Nakagawa(@shinyorke) • JX௨৴ࣾγχΞɾΤϯδχΞ •
࠷ۙͣͬͱσʔλج൫ɾσʔλੳ͍ͯ͠ΔϚϯ • ຊདྷٿσʔλαΠΤϯεʹڧ͍ਓ • ٕज़ސ͡Ί·ͨ͠
kwsk.pyҊ݅Ͱ͢ :bow: PyCon JPʹ2ͿΓ6ճͷ⽁Λ͢Δ͜ͱʹͳΓ·ͯ͠. ٱ͠ͿΓʹนଧͪʹͬͯ·͍Γ·͓͖ͨ͠߹͍͍ͩ͘͞⽁
ʲਤʳࠓճ͖ͬͯͨ͜ͱ ຊ֨తͳ։ൃ4݄͔Β, ࠷ޙͷλεΫ͕௨ͬͨͷ͕͍ͭ࠷ۙ اըɾߏؚΊΔͱ࣮͍ۙϓϩδΣΫτͩͬͨΓ
None
σʔληοτ࡞ɾಛྔநग़ • ϝδϟʔϦʔάͷσʔλʮSean Lahmanʯʮretrosheetʯ ͜ΕΒΛͯ͢BigQueryʹimport • CSV͔Βςʔϒϧ࡞ • ػցֶशλεΫʹඞཁͳಛྔΛ۪ʹࢉग़
ػցֶशλεΫͦͷᶃ ʮࣅ͍ͯΔબखΫϥελΛ࡞Δʯ
कඋҐஔɾͷงғؾͰΫϥελϦϯά • ࡶʹݴ͏ͱ, ʮ˓˓ͬΆ͍બखϥϯΩϯάʯΛ࡞Δ • ྫ͑ࡔຊ༐ਓʢڊਓʣͬΆ͍બखʁͱݴΘΕͨΒ, ʮकඋҐஔ͕γϣʔτʯʮৗʹ3ׂ20ຊྥଧଧͭʯ ͱ͔ͦΜͳײ͡. γϣʔτͰ͋Δ͜ͱϚετ, ͋ͱଧܸ࣍ୈ.
• ଧܸ͓ΑͼҰ෦ͷकඋࢦඪΛͬͯϢʔΫϦουڑΛ ٻΊͯ૯ΓͰ֤બखͷʮͦΕͬΆ͍ϥϯΩϯάʯΛ࡞Εͦ͏.
ۙࣅ࠷ۙ୳ࡧʢANNʣͰͬͯΈͨ • kNNͱ͔k-meansͱ͔Γํ৭ʑ͚͋ͬͨͲANNͰͬͨ݁Ռ ͕͍͖ͳΓ͍͍ײͩͬͨ͡ͷͰ͜Εʹͨ͠. • ANNͷλεΫAnnoy͍ͬͯ͏ϥΠϒϥϦͰര։ൃ. • ϝδϟʔϦʔΨʔ19,000ਓͷσʔλͰͬͨΒ͍͍ײ͡ʹ.
ίʔυʢҰ෦ൈਮʣ˞ಛྔൿີ ֶश͔ΒϞσϧอଘͨͬͨ͜Ε͚ͩ. σʔλେ͖͘ͳ͍ͷͰඵͰऴΘΓ·ͨ͠.
ϚοτɾνϟοϓϚϯʢMLBएखࡾྥखʣʹ͍ۙબख ٬؍తͳσʔλ͔Β, ϑΝϯͱͯͬͯ͠Δͱͯ͠. ͍ۙબख͕ͪΌΜͱू·Γ·ͨ͠, શһࡾྥखͰଧܸͰ݁Ռग़ͤΔϚϯͳͷͰจ۟ͳ͠ʂ
ࣅ͍ͯΔબखूΊʹޭ ʢଞͷϙδγϣϯ͍͍ײͩͬͨ͡ʣ ޙ͔ͬ͜ΒߋʹΧςΰϦʔྨͯ͠ ʮະདྷͷΛ࡞ΓࠐΉʯ ࣄ͕Ͱ͖ͨΒʂ
ػցֶशλεΫͦͷᶄ ʮಉ͡ΧςΰϦͷબखΛݟ͚ͭΔʯ
φΠʔϒϕΠζʹΑΔΧςΰϦʔ͚ • ࣗવݴޠॲཧͷྨλεΫΈ͍ͨͳղ͖ํͰͬͯΈͨ. • ީิʮφΠʔϒϕΠζʯʮϥϯμϜϑΥϨετʯ͋ͨΓ. ࠓճφΠʔϒϕΠζͰͬͨ. • ٿʹ͓͚Δ౷߹తͳೳྗࢦඪʮOPSʯΛ͝ͱͷΧςΰϦʔʹ͚, ͍͔ͭ͘ͷଧܸࢦඪΛϕΫτϧʹ࣮ͯ͠ࢪ. •
࣮ී௨ʹscikit-learnͱPandasͰΓ·ͨ͠.
ͬͨ͜ͱʢཁʣɹ˞ࡶʹॻ͍ͯ·͢ • ֶशσʔλ • ༧ଌ͍ͨ͠બखʹࣅͨબख50ਓͷΛϐοΫΞοϓ • ಛྔൿີͰ͕͢…ී௨ͷଧܸʹӅ͠ຯগʑ • ༧ଌσʔλ •
༧ଌ͍ͨ͠બखͷಛྔ • ݁Ռͷϥϕϧσʔλ • OPSΛ5ஈ֊ͷΧςΰϦʹͨ͠ͷ(1ʙ5) • ্هͰࢦఆͨ͠ΧςΰϦʹଐ͢Δબखͷྸผฏۉ͔ΒͦΕͬΆ͍Λग़͢
༧ଌͱҰॹʹݟͯΈ·͠ΐ͏͔.
ϚοτɾνϟοϓϚϯʢݱ࣮ͷʣ 24ʙ26ࡀʢڈ·Ͱʣͷ. ༧ଌ͍ͨ͠ͷ27ʙ29ࡀͷ.
ϚοτɾνϟοϓϚϯʢ༧ଌ͖ʣ 27ࡀҎ߱ͷΛ༧ଌͨ݁͠ՌΛؚΊͨάϥϑ.
None
ग़͖ͯͨ݁ՌΛ͡Δͱ… • ൺֱత, ݱ࣮ʹଈͯ͠ΔͬΆ͍݁ՌʹͳΓ·ͨ͠. • ʮ28ࡀͷ͕Maxʯʮ29ࡀ͔ΒԼ͕ͬͯΔʯͨΓ͕ϦΞϧ. ※ΞεϦʔτͷମత࠷ߴை26ʙ28ࡀͱݴΘΕ͍ͯ·͢ • ͱ͍͑28ࡀͷຊྥଧ্͕͕ͬͯΔͷ, ͳΜ͔ո͍͠.
͓ͦΒ͘୭͔ͷʹҾͬுΒΕ͍ͯΔ.
Γ͠ɾվળϙΠϯτ • ࠷ޙͷྨ, ϕΠζҎ֎ࢼ͍ͨ͠. • ʮ28ࡀΛʹਰ͑ΔʯϙδγϣϯʹΑͬͯҧ͏આ͋Δ. ͷͰʮ্ͷʯΛٻΊΔλεΫ͕͍͍͔͋ͬͯ. • 2020ͷϝδϟʔϦʔάྫͷͷࢼ߹ͳͷͰ, ༧ଌͦ͜ʹ߹Θ͍ͤͨʢ2ͰׂͬͯऴΘΔʁwʣ
• ͱ͍͏ͷ͕PyCon JP 2020·ͰʹͰ͖ͯΔͣʢVer. 25ʮTsurageʯͰʣ
ଓ͖PyCon JP 2020Ͱʂ #͓͠·͍ #͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ Shinichi Nakagawa(Twitter/Facebook/etc… @shinyorke)