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PHP-MLを使ってみた話
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Keisuke Iwabuchi
August 08, 2017
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PHP-MLを使ってみた話
Keisuke Iwabuchi
August 08, 2017
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Transcript
PHP-MLΛͬͯΈͨ 2017/08/08 PHP BLT #8 Keisuke Iwabuchi
ࣗݾհ ໊લ : ؠܙี ( Keisuke Iwabuchi ) Twitter :
@bucchi49 झຯ : FXʢಛʹγεςϜτϨʔυ͕͖ʣ ձࣾ : גࣜձࣾΰΰδϟϯ ʢ࠷ۙσΟʔϓϥʔχϯά͡Ί·ͨ͠ʣ
PHPػցֶशͰ͖ͳ͍ͷʁ
͋ͬͨʂ
PHP-ML Machine Learning library for PHP MIT License PHP >=
7.0 https://github.com/php-ai/php-ml ※ࠓͷࢿྉv0.4.1Λͬͯ·͢ɻ
PHP-MLΛͬͯΈΔ ɾࠓճχϡʔϥϧωοτϫʔΫΛࢼ͢ ɾେ͖͚ͯ͘3ͭͷεςοϓͰ࣮͢Δ 1. ωοτϫʔΫͷ࡞ 2. ܇࿅ 3. ༧ଌ
εςοϓ̍ɹωοτϫʔΫͷ࡞ MLPClassifierΠϯελϯεΛ࡞Δ ೖྗ, ӅΕ, ग़ྗͷχϡʔϩϯΛࢦఆ
εςοϓ̎ɹ܇࿅ trainϝιουʹඪຊͱ͑Λ͢ partialTrainϝιουͰόονॲཧՄೳ
εςοϓ̏ɹ༧ଌ predictϝιουΛ࣮ߦͯ͠༧ଌΛಘΔ
جຊ͜Ε͚ͩ
ଞʹͰ͖Δ͜ͱ • σʔλͷલॲཧ • ਖ਼نԽʢL1 norm, L2 normʣ • ܽଛͷิ
• σʔλͷׂ • ແ࡞ҝׂ • ผແ࡞ҝׂ
αϯϓϧίʔυɿΞϠϝΛྨ
αϯϓϧίʔυɹଓ͖ ྨਫ਼ɹ97.78%
PHP-MLͰ͍᪴ͨͱ͜Ζ ϕετ̎
̎Ґ
ηʔϒػೳ͕ݟ͔ͭΒͳ͍ • ܇࿅݁Ռͷอଘํ๏͕υΩϡϝϯτʹࡌͬͯͳ͍ • ηʔϒػೳͳ͍ͱຖճܭࢉ͕ඞཁ • ࠷ॳແ͍ͷͩͱࢥͬͯࣗલͰ࣮ͨ͠ • ιʔεΛΑ͘ݟΔͱଘࡏ͢Δ
܇࿅݁ՌΛอଘ͢Δʹʁ • ModelManagerΫϥεΛ͏ • saveToFileϝιουͰηʔϒ • restoreFromFileϝιουͰ෮ݩ
̍Ґ
composer͕མͱ݀͠ • composerͰΠϯετʔϧ͢Δํ๏͕հ͞Ε͍ͯΔ • ͔͠͠composerͰಋೖ͢ΔͱMLPClassifier.phpଘࡏ͠ͳ͍ • ͭ·ΓχϡʔϥϧωοτϫʔΫ࣮ߦͰ͖ͳ͍ • Github͔Βམͱͯ͘͠Δͷ͕ਖ਼ղ
·ͱΊ • ؾܰʹ࣮Λମݧ͢ΔʹPHP-ML͕దͯ͠Δ • ػೳͷॆ࣮ଞͷϥΠϒϥϦʹྼΔ • PHPͰຊ֨తͳػցֶश࣮༻తͰͳ͍ • ૉʹPython֮͑·͠ΐ͏ •
PHPͷͳΜͰ͋Δͱ͜Ζ͕͖
͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ɻ