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Query about KL divergence calculation #5

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npitsillos opened this issue Jul 3, 2021 · 0 comments
Open

Query about KL divergence calculation #5

npitsillos opened this issue Jul 3, 2021 · 0 comments

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@npitsillos
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Hello and thank you for the implementation! I am trying to implement this in PyTorch and I am stuck on the KL loss. Can you explain to me the dimensionalities on the KL loss and especially this line.

I am having a bit of a hard time following this and it would be nice to get an explanation as I am not familiar with the tsne implementation. From my understanding and tests in my implementation P should be (batch_size, 2) and Q is (batch_size, batch_size) how can the division work there with different matrix sizes?
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@npitsillos