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For questions related to variational auto-encoders (VAEs). The first VAE was proposed in "Auto-Encoding Variational Bayes" (2013) by Diederik P. Kingma and Max Welling. There are several other VAEs, for example, the conditional VAE.
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Why VQ-VAE instead of VAE?
From the paper on VQ-VAE, it said that the vector quantized variational autoencoder (VQ-VAE), differs from VAEs in two key ways:
the encoder network output discrete, rather than continuous, codecs
th …
3
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Why don't we also need to approximate $p(x \mid z)$ in the VAE?
In the VAE, we approximate the probability distribution $p(z \mid x)$, where $z$ is the latent vector and $x$ is our data. The reason is that $p(z \mid x)$ becomes impossible to calculate for continuo …