Once a tabular model is predicting correctly, how do we interpret the factors the model the found?
Is there an api simliar to the collab learners’ weight.pca functionality?
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The pca functionality has been attached to all torch Tensors so for any torch Tensor you can use pca by simply calling pca() on it. For example if you have a tensor myTensor = torch.randn(40,40) you can use pca like myTensor.pca(). I can’t find it in the docs but the function is defined here.
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That’s good to know, thank you. I was disappointed when I searched the fastai docs for pca and found nothing!
I will take a look at the implementation of the collab leaner’s weight function to see if I can understand how to apply it to the tabular learner. I believe they have different embedding implementations, but under the hood they have to come down to a tensor of embedding weights which would have the pca function, correct?
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Sounds right! 