Abstract:The central objective function of a variational autoencoder (VAE) is its variational lower bound. Here we show that for standard VAEs the variational bound is at convergence equal to the sum of three entropies: the (negative) entropy of the latent distribution, the expected (negative) entropy of the observable distribution, and the average entropy of the variational distributions. Our derived analytical results are exact and apply for small as well as complex neural networks for decoder and encoder. Furthermor… Show more
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