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In-Person Poster presentation / poster accept
Mon May 01 02:30 AM -- 04:30 AM (PDT) @ MH1-2-3-4 #78
Structure by Architecture: Structured Representations without Regularization
Felix Leeb · Giulia Lanzillotta · Yashas Annadani · michel besserve · Stefan Bauer · Bernhard Schoelkopf
[ OpenReview

We study the problem of self-supervised structured representation learning using autoencoders for downstream tasks such as generative modeling. Unlike most methods which rely on matching an arbitrary, relatively unstructured, prior distribution for sampling, we propose a sampling technique that relies solely on the independence of latent variables, thereby avoiding the trade-off between reconstruction quality and generative performance typically observed in VAEs. We design a novel autoencoder architecture capable of learning a structured representation without the need for aggressive regularization. Our structural decoders learn a hierarchy of latent variables, thereby ordering the information without any additional regularization or supervision. We demonstrate how these models learn a representation that improves results in a variety of downstream tasks including generation, disentanglement, and extrapolation using several challenging and natural image datasets.