20170318_Tokyo.R_ver59 - Speaker Deck

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RͰεύʔεϞσϦϯά? 2017೥03݄18೔ɹ @αΠϘ΢ζ

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ࣗݾ঺հ ໊લɿҏ౻ ప࿠(@tetsuroito) ࢓ࣄɿϚωʔΛϑΥϫʔυͯ͠·͢ झຯɿञɺαοΧʔ؍ઓɺεΩʔ ۙگɿࡶࢽʹ໊લ͕ग़ΔͳͲͨ͠ Ұݴɿय़Ͱ͢Ͷ

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ݱ୅ͷػցֶशͷϒϨΠΫεϧʔ ਂ૚ֶश(DeepLearning) Χʔωϧ๏ εύʔεϞσϦϯά

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ݱ୅ͷػցֶशͷϒϨΠΫεϧʔ ਂ૚ֶश(DeepLearning) Χʔωϧ๏ εύʔεϞσϦϯά ͋ͷҪग़͞Μ͕ଠޑ൑ʂ

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εύʔεϞσϦϯά͸ʁ ༩͑ΒΕͨσʔλʹԠͯ͡౷ܭϞσϧͷඞཁͳ ෦෼Λࣗಈతʹநग़͢Δٕज़ͷ͜ͱ Ϟσϧબ୒ ม਺બ୒ ͜ΜͳΠϝʔδ ࠷దͳϞσϧΛͲ͏΍ͬͯ୳͔͢

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εύʔεϞσϦϯά֓؍ ม਺બ୒ (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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AI͸R͔Β࢓ࣄΛୣ͏ͷ͔? ͱ͍͏ࡶͳϙΤϜΛ࿩͠·͢

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Έͳ͞Μ ͓࢓ࣄͰR࢖ͬͯ·͔͢ʁ

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σʔλ෼ੳϓϩηεͱ Rͷؔ܎ੑΛ ݟͯΈΑ͏

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CRISP-DMͷϓϩηε

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KDDͷϓϩηε બ୒ લॲཧ ม׵ ϚΠχϯά σʔλ ղऍ ධՁ ໨తσʔλ લॲཧࡁ σʔλ ม׵ࡁ σʔλ ύλʔϯ

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σʔλ෼ੳͷܗࣜతͳ ϓϩηεʹ͓͍ͯɺ Rͷकඋൣғ͸ ͔ͳΓ޿͍Α͏ʹݟ͑·͢

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ຊ౰ʹͦ͏ͳΜ͚ͩͬʁ ۀ຿ϑϩʔͰR͕૊Έࠐ·Ε͍ͯΔਓʁ

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΍ͬͺRͬͯγεςϜߏ੒ਤʹ͍ͳ͍ΑͶ

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ͪΌΜͱ࢖ΘΕ͍ͯΔͳΒɺ͜Μͳײ͡ʹ͋ͬͯ΋͍͍

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RͷཱͪҐஔ͸ ʮΞυϗοΫ෼ੳʯͷͨΊͷ ෼ੳπʔϧͳͷͰɺ γεςϜߏ੒͍ͯ͠ͳ͍ͷͰ͸

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ΞυϗοΫ෼ੳͦ͜ਓؒྖҬ બ୒ લॲཧ ม׵ ϚΠχϯά σʔλ ղऍ ධՁ ໨తσʔλ લॲཧࡁ σʔλ ม׵ࡁ σʔλ ύλʔϯ ֫ಘͨ͠φϨοδΛ࣮૷͠ɺӡ༻͢ΔࡍʹAIతͳৼΔ෣͍ Λͯ͘͠ΕΔͱͱͯ΋ྑͦ͞͏

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ڧԽֶश(≒AI) ͷΑ͏ͳΞϓϩʔν͕ղܾͦ͠͏ ͋ͷλΧϠφΪ=αϯ΋ݴͬͯͨ https://japan.zdnet.com/article/35096402/

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