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keras-examples's Issues

R-CNN

How you are performing finetuning in without load_weights in 17flowers

In finetuning.py of 17Flowers how you are performing fine tuning without loading a pretrained weights?

As I can see you commented out the following line (Line no. 51):

# top_model.load_weights(os.path.join(result_dir, 'bottleneck_fc_model.h5'))

Whereas in finetuning.py of dogs_vs_cats you are executing that line. Is it possible to fine tune without loading a pretrained model?

Style transfer

https://github.com/fchollet/keras/blob/master/examples/neural_style_transfer.py
https://elix-tech.github.io/ja/2016/08/22/art.html

  • 原論文: Image Style Transfer Using Convolutional Neural Networks
  • スタイル変換には、このVGGから全結合層を取り除いたものを使用します。
  • VGGは元々画像を分類する目的で訓練されています。深い層に行くにつれて、分類するにあたって重要なコンテンツが残り、それとはあまり関係のない詳細な見た目などの情報は落ちていっていると考えられます。これはコンテンツとスタイルをある程度分離することができているとも考えられそうです。CNNによるコンテンツとスタイルの分離がこの論文の重要な貢献となっています。
  • コンテンツの損失+スタイルの損失を損失関数として最小化すればよさそうです
  • 通常は入力が固定で重みが更新されていきますが、今回は逆で重みが固定で入力画像が更新されていくことに注意します。

ImageDataGeneratorの使い方

Feature Visualization

How convolutional neural networks see the world

ゼロから作るDeep Learningの追試

  • SGD, Momentum, AdaGrad, RMSProp, Adamの比較
  • Xavier, Heの初期値の比較
  • Batch Normalizationの効果検証
  • Weight decayの効果検証
  • Dropoutの効果検証

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