Google ColabでDL入門#2

Google Colab上でKeras Tutorialsの日本語版を試すハンズオンの2回め。
Python機械学習勉強会in新潟 2018-10-13での発表スライド。

Transcript

1. Pythonػցֶशษڧձ in ৽ׁ ͰDLೖ໳#2 Google Colab 1 ൘֞ ਖ਼හ 2018-10-13
2. PyML in Niigata • ൘֞ ਖ਼හ • גࣜձࣾBSNΞΠωοτ ٕज़ސ໰ • தখاۀ਍அ࢜ • ೔ຊRubyͷձ • ৽ׁΦʔϓϯιʔεڠձ • Pythonॳ৺ऀ WHO AM I ? 2
3. PyML in Niigata • ʮColaboratory ͸ɺػց ֶशͷڭҭ΍ݚڀͷଅਐ Λ໨తͱͨ͠ Google ݚ ڀϓϩδΣΫτͰ͢ʯby Google • Google Driveͱ࿈ಈ • ίϯςφٕज़Λ׆༻ͨ͠ JupyterͷΧελϜ؀ڥ • νʔϜϝϯόʔͰͷڞಉ ฤू͕Մೳ • GPU/TPU΋ແྉͰ࢖͑ Δʂ • ੍ݶ࣌ؒ͸12࣌ؒʁ WHAT IS GOOGLE COLABORATORY? 3
4. ʮDriveʹίϐʔʯΛΫϦοΫ ͯ͠Driveͱͷ࿈ܞΛ։࢝ PyML in Niigata HOW TO BEGIN https://colab.research.google.com/ 4
5. PyML in Niigata • TensorFlow͸Googleͷ OSSʢOpen Source Softwareʣ • Deep LearningͷCoreͰ͋ ΔTensorԋࢉΛCPU/GPU Ͱߴ଎࣮ߦ͢ΔͨΊͷϥΠ ϒϥϦ • cf Caffe, MXNet, CNTK etc. • Keras͸François Chollé @Google͕։ൃͨ͠OSS • TensorFlowɺ Theanoɺ CNTKͳͲͷόοΫΤϯυ Λ࢖͍ɺModelΛॻ͖΍͢ ͘͢ΔϥΠϒϥϦ • TensorFlowʹ૊ࠐࡁ • cf Chainer, PyTorch etc. WHAT IS TENSORFLOW/KERAS? 5
6. ΦϦδφϧͷTutorials ͸ɺࠨهͷURLͰެ։ ͞Ε͍ͯ·͢ɻ ͜ͷTutorials͸ TensorFlowͷυΩϡϝ ϯτதͷhttps:// github.com/tensorflow/ docs/tree/master/site/ en/tutorials/keras ʹؚ ·Ε͍ͯ·͢ɻ PyML in Niigata LET’S START KERAS TUTORIALS https://www.tensorflow.org/tutorials/ 6
7. github.comͰ্هͷ ιʔείʔυʢJupyter NotebookʣΛදࣔ͠· ͢ɻ ࠨਤͷͱ͓Γɺ”Run in Google Colab (Japanese translation)” ͷϦϯΫΛΫϦοΫ͢ ΔͱɺGoogle ColabͰ ։͘͜ͱ͕ग़དྷ·͢ɻ PyML in Niigata LET’S START KERAS WITH JAPANESE https://github.com/masa-ita/keras-tutorials/ 7
8. GITHUBλϒΛબ୒ ͠ɺϢʔβʔ໊”masa- ita”Λೖྗͯ͠ݕࡧϘλ ϯΛΫϦοΫ͠·͢ɻ ϦϙδτϦ͔Β”masa- ita/keras-tutorials”ɺϒ ϥϯν”master”Λબ୒ ͠·͢ɻ දࣔ͞Εͨύεͷத͔ Β”basic_text_classific ation.ipynb”ͷӈ୺ͷϘ λϯΛΫϦοΫ͠·͢ɻ PyML in Niigata LET’S START KERAS WITH JAPANESE https://colab.research.google.com/ Λ։͖·͢ɻ 8
9. ͜ͷঢ়ଶͰ͸ɺ Notebookͷ࣮ߦ͸ग़དྷ ·͕͢ɺग़ྗΛอଘ͢ Δ͜ͱ͕ग़དྷ·ͤΜɻ ग़ྗΛอଘ͢Δʹ͸ ʮϑΝΠϧʯϝχϡʔ ͔ΒʮυϥΠϒʹίϐʔ ΛอଘʯΛબ୒ͯ͠ɺ Google Driveʹίϐʔ Λอଘ͠·͢ɻ PyML in Niigata SAVE THE NOTEBOOK ON GOOGLE DRIVE 9
10. GPUΛ࢖༻͢Δʹ͸ɺʮϥϯλΠ Ϝʯϝχϡʔ͔ΒʮϥϯλΠϜͷλ ΠϓΛมߋʯΛબ୒͠ɺʮϋʔυ΢Σ ΞΞΫηϥϨʔλʯΛʮNoneʯ͔ ΒʮGPUʯʹมߋ͠·͢ɻ PyML in Niigata HOW TO USE GPU 10
11. Google͕࡞੒ͨ͠ϊʔτ ϒοΫҎ֎Λ࣮ߦ͢Δࡍ ʹ͸ɺࠨਤͷΑ͏ͳηΩϡ ϦςΟܯࠂ͕දࣔ͞ΕΔ ͜ͱ͕͋Γ·͢ɻ ϦηοτΛ࣮ߦ͢Δࡍʹ ͸Լਤͷ֬ೝ͕ඞཁͰ͢ ɻ PyML in Niigata SECURITY WARNING 11
12. PyML in Niigata TEXT CLASSIFICATION 12
13. PyML in Niigata WORD EMBEDDING 13 <START> this film was just brilliant casting … with us all [1, 14, 22, 16, 43, 530, 973, …, 19, 178, 32] a1 b1 ⋮ p1 a2 b2 ⋮ p2 a3 b3 ⋮ p3 am bm ⋮ pm am bm ⋮ cm Embedding GlobalAveragePooling1D
14. PyML in Niigata TIPS HOW TO BRING YOUR OWN DATA https://colab.research.google.com/notebooks/io.ipynb 14 ԼهͷίʔυΛ࣮ߦ͢ΔͱೝূϦϯΫͱೖྗϑΟʔϧυ͕දࣔ͞Ε·͢ɻ ೝূϦϯΫΛΫϦοΫͯ͠ɺGoogle Colab͔ΒͷGoogle DriveͷΞΫη εΛڐՄ͠ɺൃߦ͞ΕͨτʔΫϯΛೖྗϑΟʔϧυʹϖʔετ͠Enter ΩʔΛԡ͢ͱɺGoogle Drive ͕Ϛ΢ϯτ͞Ε·͢ɻ
15. PyML in Niigata NEXT STEP ଞͷϊʔτϒοΫ΋΍ͬͯΈΔ ϊʔτϒοΫΛίϐʔͯ͠ϞσϧΛ͍ͬͯ͡ΈΔ ॻ੶΍WEB্ͷίʔυΛ࣮ߦͯ͠ΈΔ 15