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RͰεύʔεϞσϦϯά? 201703݄18ɹ @αΠϘζ
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ࣗݾհ ໊લɿҏ౻ ప(@tetsuroito) ࣄɿϚωʔΛϑΥϫʔυͯ͠·͢ झຯɿञɺαοΧʔ؍ઓɺεΩʔ ۙگɿࡶࢽʹ໊લ͕ग़ΔͳͲͨ͠ Ұݴɿय़Ͱ͢Ͷ
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ݱͷػցֶशͷϒϨΠΫεϧʔ ਂֶश(DeepLearning) Χʔωϧ๏ εύʔεϞσϦϯά
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ݱͷػցֶशͷϒϨΠΫεϧʔ ਂֶश(DeepLearning) Χʔωϧ๏ εύʔεϞσϦϯά ͋ͷҪग़͞Μ͕ଠޑʂ
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εύʔεϞσϦϯάʁ ༩͑ΒΕͨσʔλʹԠͯ͡౷ܭϞσϧͷඞཁͳ ෦Λࣗಈతʹநग़͢Δٕज़ͷ͜ͱ Ϟσϧબ มબ ͜ΜͳΠϝʔδ ࠷దͳϞσϧΛͲ͏ͬͯ୳͔͢
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εύʔεϞσϦϯά֓؍ มબ (L0 ਖ਼ଇԽ) AICɺCVɺWAIC DICɺBIC/MDL εύʔεϞσϦϯά L1 ਖ਼ଇԽ lasso േଇ͖ͭਪఆ ֊ϕΠζ L2 ਖ਼ଇԽ Ϧοδճؼ/ॖখਪఆ elastic net
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ͦΜͳࠓΛͱ͖Ί͘ εύʔεϞσϦϯάͷ Λօ͞Μʹ͓ಧ͚
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ͦΜͳࠓΛͱ͖Ί͘ εύʔεϞσϦϯάͷ Λօ͞Μʹ͓ಧ͚ ͍ͨ͠ͱࢥ͕ͬͨ…
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ࠓͷࢲͷཧղͰ ղઆ·Ͱٴͼ·ͤΜͰͨ͠ αϯϓϧίʔυ͚ͩܝࡌ͠·͢ɻ͝ΊΜͶ
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glmnetͰlassoΛ࣮ࢪ
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݁ՌΛඳը
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ϏδϡΞϥΠζ
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ͱ͍͏Θ͚Ͱ
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AIR͔ΒࣄΛୣ͏ͷ͔? ͱ͍͏ࡶͳϙΤϜΛ͠·͢
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Έͳ͞Μ ͓ࣄͰRͬͯ·͔͢ʁ
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σʔλੳϓϩηεͱ RͷؔੑΛ ݟͯΈΑ͏
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CRISP-DMͷϓϩηε
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KDDͷϓϩηε બ લॲཧ ม ϚΠχϯά σʔλ ղऍ ධՁ తσʔλ લॲཧࡁ σʔλ มࡁ σʔλ ύλʔϯ
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σʔλੳͷܗࣜతͳ ϓϩηεʹ͓͍ͯɺ Rͷकඋൣғ ͔ͳΓ͍Α͏ʹݟ͑·͢
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ຊʹͦ͏ͳΜ͚ͩͬʁ ۀϑϩʔͰR͕Έࠐ·Ε͍ͯΔਓʁ
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ͬͺRͬͯγεςϜߏਤʹ͍ͳ͍ΑͶ
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ͪΌΜͱΘΕ͍ͯΔͳΒɺ͜Μͳײ͡ʹ͍͍͋ͬͯ
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RͷཱͪҐஔ ʮΞυϗοΫੳʯͷͨΊͷ ੳπʔϧͳͷͰɺ γεςϜߏ͍ͯ͠ͳ͍ͷͰ
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ΞυϗοΫੳͦ͜ਓؒྖҬ બ લॲཧ ม ϚΠχϯά σʔλ ղऍ ධՁ తσʔλ લॲཧࡁ σʔλ มࡁ σʔλ ύλʔϯ ֫ಘͨ͠φϨοδΛ࣮͠ɺӡ༻͢ΔࡍʹAIతͳৼΔ͍ Λͯ͘͠ΕΔͱͱͯྑͦ͞͏
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ڧԽֶश(≒AI) ͷΑ͏ͳΞϓϩʔν͕ղܾͦ͠͏ ͋ͷλΧϠφΪ=αϯݴͬͯͨ https://japan.zdnet.com/article/35096402/
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͜͏͡Όͳͯ͘
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͜͏͍ͬͨਤ͕͍͍ࣜͷͰ AIͱRڞଘͰ͖ΔͷͰʂ
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͝੩ௌ͋Γ͕ͱ͏ ͍͟͝·ͨ͠ʂ Enjoyʂ