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In general, a latent space is a structure of reduced dimensionality than that of the input space where points on this space share resemblance the closer they are to each other.

This article also refers to the layers of a convolutional neural network as a latent space (see the diagram). Some CNNs essentially squash an input image into a compressed representation too with appropriate use of convolutional and pooling layers.

What I want to understand is: can we really look at the CNN's layers as the same kind of latent space representation as described in the former definition, i.e are the feature representations generated by these layers also like points on a latent space? I cannot seem to understand this.

If so, where can I find some good literature where a latent space representation is explained like this on a more general level for CNNs?

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    $\begingroup$ I think you'll need to sharpen the definitions you're using to get useful answers. If the only requirement for a "latent space" is that it's a "representation" created through convolution and max pooling operations, then every CNN has a latent space. If you require a "compressed" representation in the sense that the latent representation has fewer numbers than the original representation, then the CNNs that don't learn a latent space are the ones that have the same or more numbers in their representation. Can you edit to be more specific about the latent representations that interest you? $\endgroup$
    – Sycorax ♦
    May 23 at 22:20
  • $\begingroup$ @Sycorax changed the question as suggested. Hope this makes more sense. $\endgroup$
    – mesllo
    May 24 at 1:29

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