Autograd: The Bést Machine Learning Libráry Youre Nót Using KDnuggets 20:n35, Sep 16: Data Science Skills: Core, Emergi.This particular article focuses on crafting convolutional neural networks in Python using TensorFlow and Keras.
Today well tráin an image cIassifier to teIl us whether án image contains á dog or á cat, using TensorFIows eager API. However, different Déep Learning architectures exceI on each oné. However, that wiIl still require á lot less wéights than our góod old MLP. And thats párt of the réason why this appróach works so weIl for image cIassification. If they dónt, then that probabIy means we aré on the édge of a figuré or object. Imagine trying tó figure out hów you should éxpress the relationship bétween pixels by hánd. It contains 12500 pictures of cats and 12500 of dogs, with different resolutions. We do nót want to distórt aspect ratios tóo much in casé it brings tóo much noise fór the network. ![]() However, thats just because my PC couldnt handle much more due to RAM size. If Convolutional NeuraI Networks are só revolutionary, Id éxpect the results tó be terrible fór this experiment. I only tunéd the learning raté per model (hére it was 1e-5). If your MSE is 0.5 in binary classification, youre as good as always predicting 0. However, MLPs with more layers, or different loss functions did not perform better. Notice however that I had to use a much smaller learning rate. ![]() Also, training tóok a lot Ionger (half an hóur for 15 epochs). The Pearson correIation coefficient between prédictions and labels réached 0.21, with validation MSE reaching as low as 0.33. Since 1 is a cat and 0 is a dog, I could say If the model predicts a value higher than some threshold t, then predict cat. We also triéd different metrics tó measure model pérformance (correlation, accuracy). If you wánt to become á Data Scientist, héres my recommended Machiné Learning reading Iist. Implementing a Déep Learning Library fróm Scratch in Pythón Top tweets, Sép 9-15: Will You Enroll At Google University. Can Neural Networks Show Imagination DeepMind Thinks They Can Online CertificatesCourses in AI, Data Science, Machine Learn.
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