PHP-MLを使ってみた話

by Keisuke Iwabuchi

Slide 1

Slide 1 text

PHP-MLΛ࢖ͬͯΈͨ࿩ 2017/08/08 PHP BLT #8 Keisuke Iwabuchi

Slide 2

Slide 2 text

ࣗݾ঺հ ໊લ : ؠ෵ܙี ( Keisuke Iwabuchi ) Twitter : @bucchi49 झຯ : FXʢಛʹγεςϜτϨʔυ͕޷͖ʣ ձࣾ : גࣜձࣾΰΰδϟϯ ʢ࠷ۙσΟʔϓϥʔχϯά͸͡Ί·ͨ͠ʣ

Slide 3

Slide 3 text

PHP͸ػցֶशͰ͖ͳ͍ͷʁ

Slide 4

Slide 4 text

͋ͬͨʂ

Slide 5

Slide 5 text

PHP-ML Machine Learning library for PHP MIT License PHP >= 7.0 https://github.com/php-ai/php-ml ※ࠓ೔ͷࢿྉ͸v0.4.1Λ࢖ͬͯ·͢ɻ

Slide 6

Slide 6 text

PHP-MLΛ࢖ͬͯΈΔ ɾࠓճ͸χϡʔϥϧωοτϫʔΫΛࢼ͢ ɾେ͖͘෼͚ͯ3ͭͷεςοϓͰ࣮૷͢Δ 1. ωοτϫʔΫͷ࡞੒ 2. ܇࿅ 3. ༧ଌ

Slide 7

Slide 7 text

εςοϓ̍ɹωοτϫʔΫͷ࡞੒ MLPClassiﬁerΠϯελϯεΛ࡞Δ ೖྗ૚, ӅΕ૚, ग़ྗ૚ͷχϡʔϩϯ਺Λࢦఆ

Slide 8

Slide 8 text

εςοϓ̎ɹ܇࿅ trainϝιουʹඪຊͱ౴͑Λ౉͢ partialTrainϝιουͰόονॲཧ΋Մೳ

Slide 9

Slide 9 text

εςοϓ̏ɹ༧ଌ predictϝιουΛ࣮ߦͯ͠༧ଌ஋ΛಘΔ

Slide 10

Slide 10 text

جຊ͸͜Ε͚ͩ

Slide 11

Slide 11 text

ଞʹͰ͖Δ͜ͱ • σʔλͷલॲཧ • ਖ਼نԽʢL1 norm, L2 normʣ • ܽଛ஋ͷิ׬ • σʔλͷ෼ׂ • ແ࡞ҝ෼ׂ • ૚ผແ࡞ҝ෼ׂ

Slide 12

Slide 12 text

αϯϓϧίʔυɿΞϠϝΛ෼ྨ

Slide 13

Slide 13 text

αϯϓϧίʔυɹଓ͖ ෼ྨਫ਼౓ɹ97.78%

Slide 14

Slide 14 text

PHP-MLͰ͍᪴ͨͱ͜Ζ ϕετ̎

Slide 15

Slide 15 text

̎Ґ

Slide 16

Slide 16 text

ηʔϒػೳ͕ݟ͔ͭΒͳ͍ • ܇࿅݁Ռͷอଘํ๏͕υΩϡϝϯτʹࡌͬͯͳ͍ • ηʔϒػೳͳ͍ͱຖճܭࢉ͕ඞཁ • ࠷ॳ͸ແ͍΋ͷͩͱࢥͬͯࣗલͰ࣮૷ͨ͠ • ιʔεΛΑ͘ݟΔͱଘࡏ͢Δ

Slide 17

Slide 17 text

܇࿅݁ՌΛอଘ͢Δʹ͸ʁ • ModelManagerΫϥεΛ࢖͏ • saveToFileϝιουͰηʔϒ • restoreFromFileϝιουͰ෮ݩ

Slide 18

Slide 18 text

̍Ґ

Slide 19

Slide 19 text

composer͕མͱ݀͠ • composerͰΠϯετʔϧ͢Δํ๏͕঺հ͞Ε͍ͯΔ • ͔͠͠composerͰಋೖ͢ΔͱMLPClassiﬁer.php͸ଘࡏ͠ͳ͍ • ͭ·ΓχϡʔϥϧωοτϫʔΫ͸࣮ߦͰ͖ͳ͍ • Github͔Β௚઀མͱͯ͘͠Δͷ͕ਖ਼ղ

Slide 20

Slide 20 text

·ͱΊ • ؾܰʹ࣮૷Λମݧ͢Δʹ͸PHP-ML͕దͯ͠Δ • ػೳͷॆ࣮౓͸ଞͷϥΠϒϥϦʹྼΔ • PHPͰຊ֨తͳػցֶश͸࣮༻తͰ͸ͳ͍ • ૉ௚ʹPython֮͑·͠ΐ͏ • PHPͷͳΜͰ΋͋Δͱ͜Ζ͕޷͖

Slide 21

Slide 21 text

͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ɻ