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Deep Learning with Theano

You're reading from   Deep Learning with Theano Perform large-scale numerical and scientific computations efficiently

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Product type Paperback
Published in Jul 2017
Publisher Packt
ISBN-13 9781786465825
Length 300 pages
Edition 1st Edition
Tools
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Author (1):
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Christopher Bourez Christopher Bourez
Author Profile Icon Christopher Bourez
Christopher Bourez
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Table of Contents (15) Chapters Close

Preface 1. Theano Basics 2. Classifying Handwritten Digits with a Feedforward Network FREE CHAPTER 3. Encoding Word into Vector 4. Generating Text with a Recurrent Neural Net 5. Analyzing Sentiment with a Bidirectional LSTM 6. Locating with Spatial Transformer Networks 7. Classifying Images with Residual Networks 8. Translating and Explaining with Encoding – decoding Networks 9. Selecting Relevant Inputs or Memories with the Mechanism of Attention 10. Predicting Times Sequences with Advanced RNN 11. Learning from the Environment with Reinforcement 12. Learning Features with Unsupervised Generative Networks 13. Extending Deep Learning with Theano Index

Natural image datasets


Image classification usually includes a wider range of objects and scenes than the MNIST handwritten digits. Most of them are natural images, meaning images that a human being would observe in the real world, such as landscapes, indoor scenes, roads, mountains, beaches, people, animals, and automobiles, as opposed to synthetic images or images generated by a computer.

To evaluate the performance of image classification networks for natural images, three main datasets are usually used by researchers to compare performance:

  • Cifar-10, a dataset of 60,000 small images (32x32) regrouped into 10 classes only, which you can easily download:

    wget https://www.cs.toronto.edu/~kriz/cifar-10-python.tar.gz -P /sharedfiles
    tar xvzf /sharedfiles/cifar-10-python.tar.gz -C /sharedfiles/

    Here are some example images for each class:

    Cifar 10 dataset classes with samples https://www.cs.toronto.edu/~kriz/cifar.html

  • Cifar-100, a dataset of 60,000 images, partitioned into 100 classes and 20 super...

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