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Ruby脳で実装するCNN
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hatappi
March 30, 2018
Technology
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1.6k
Ruby脳で実装するCNN
#speeekaigi
hatappi
March 30, 2018
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Transcript
RubyͰ࣮͢ΔCNN 4QFFF,BJHJ UZOUΤϯδχΞാத༔࡞
self.intoroduction { name: "Yusaku Hatanaka", twitter: "@hatappi", github: "hatappi", hatena:
"hatappi1225", company: "Speee, Inc." languages: ["Ruby", "Go", "Python"], icon: "ɹ " }
CNNͱ w ΈࠐΈχϡʔϥϧωοτϫʔΫ Convolutional Neural Network w શ݁߹Ͱ3(#ը૾ͷΑ͏ͳ࣍ݩͷը૾Ͱ͋ͬͯ̍࣍ݩͷ σʔλʹ͢ΔͨΊܗঢ়͕ແࢹ͞Εͯ͠·͏͕$//Ͱܗঢ়Λ
ҡ࣋͢Δ͜ͱ͕ग़དྷΔ IUUQZBOOMFDVODPNFYECQVCMJTQEGMFDVOQEG શ݁߹ ΈࠐΈ
*-473$ IUUQJNBHFOFUPSHDIBMMFOHFTUBMLT@*-473$@PWFSWJFXQEG AlexNet ZFNet GooLeNet ResNet SENet
࣮ྫ גࣜձࣾ7"4*-: 3FUUZגࣜձࣾ
ੈͷதͰͲͷΑ͏ʹ ࣮ݱ͞Ε͍ͯΔͷ͔
FUD
ͳͥRubyͰ࣮͢Δ ඞཁ͕͋ΔͷͰ͠ΐ͏͔ʁ
rmatz lRubyΛΩϝΔͱؾ͍͍࣋ͪz
3FE$IBJOFS
3FE$IBJOFSͱʁ w 1ZUIPOͷ$IBJOFSΛ3VCZͰϙʔςΟϯάͨ͠ਂ ֶशϑϨʔϜϫʔΫ w χϡʔϥϧωοτϫʔΫ$//ͳͲͷωοτϫʔ ΫߏஙΛ͢Δ্Ͱඞཁͳ"1*Λఏڙ͢Δ w ߦྻͷอ࣋ɾԋࢉʹ/VNP/"SSBZΛ༻
3FE$IBJOFSͷಛ w 3VCZͰ࣮ݱ͞Ε͍ͯΔ w 3VCZJTU͕3VCZΒ͘͠ਂֶशΛ͢Δ͜ͱ͕ग़དྷ ΔΑ͏ʹͳΔͣ w ./*45$*'"3Λࣝผ͢ΔͷͰͳͦ͘ΕΒΛ ࣮ݱ͢ΔͨΊͷ"1*܈Λఏڙ͍ͯ͠Δ w
044Ͱఏڙ͞Ε͓ͯΓ୭ͰιʔείʔυΛ ݟΔ͜ͱ͕ग़དྷͯҰॹʹ։ൃΛ͢Δ͜ͱ͕ग़དྷΔ SFEEBUBUPPMTSFEDIBJOFS
$*'"3ͷࣝผ
$*'"3 w ܇࿅σʔλສຕɺςετσʔ λສຕ͔ΒͳΔը૾σʔλ ηοτ w ը૾YQYͷ3(#͕ DIBOOFMͰߏ͞ΕΔ IUUQTXXXDTUPSPOUPFEVdLSJ[DJGBSIUNM
ͬͨϞσϧ w ͷILSVRCͰҐͱͳͬͨ7((ϞσϧΛϕʔ εʹ͍ͯ͠·͢ w 7((ΈࠐΈͱϓʔϦϯά͔Βߏ͞ΕΔ γϯϓϧͳߏͷ$// w ύϥϝʔλͷ࠷దԽʹMomentumSGD
ͬͨϞσϧ
ͬͨϞσϧ
࣮ͨ͠"1* • Convolution2D • Batch Normalization • MaxPooling • MomentumSGD
• Dropout • WeightDecay • etc
σϞ
ݱঢ়ͷ՝໘ 3FE$IBJOFS $IBJOFS TPOPUTDVNP
ݱঢ়ͷ՝3VCZΒ͠͞
·ͱΊ w CIFARͷࣝผΛ͢ΔϞσϧΛߏங͢ΔͨΊʹඞཁͳ "1*܈Λ࣮ͨ͠ w RubyͰCNNΛߏங͢Δ͜ͱͰΩϝͯؾ࣋ͪΑ͘ ͳΕͨ w Red Chainer͕࣮༻తͳͷͱҰาલʹਐΜͩ