GoogleCloudPlatform / tensorflow-without-a-phd

A crash course in six episodes for software developers who want to become machine learning practitioners.
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Crossentropy calculation in mnist-1.0-softmax outputs NaNs #39

Open josephhaaga opened 5 years ago

josephhaaga commented 5 years ago

I'm running the code in Colab, using the provided ./sample_data/mnist_train_small.csv (can't seem to import mnistdata). I'm not sure whether the mnistdata copy of the data set is normalized differently that the one provided in Colab, but I assume they're similar.

When training the model, the example's cross_entropy calculation outputs NaNs, as is documented in (this StackOverflow solution)[https://stackoverflow.com/a/33644778]. A followup (answer by colah)[https://stackoverflow.com/a/33645235] suggests that this is a deliberate choice aimed at getting users to interact with the code, but it's dated 2015, and the implementation mentioned is different than that of the latest version of mnist-1.0-softmax.py.