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Learning Sparse Codes with Entropy-Based ELBOs
April 11, 2024, 4:43 a.m. | Dmytro Velychko, Simon Damm, Asja Fischer, J\"org L\"ucke
cs.LG updates on arXiv.org arxiv.org
Abstract: Standard probabilistic sparse coding assumes a Laplace prior, a linear mapping from latents to observables, and Gaussian observable distributions. We here derive a solely entropy-based learning objective for the parameters of standard sparse coding. The novel variational objective has the following features: (A) unlike MAP approximations, it uses non-trivial posterior approximations for probabilistic inference; (B) unlike for previous non-trivial approximations, the novel objective is fully analytical; and (C) the objective allows for a novel principled …
abstract arxiv coding cs.lg entropy features linear map mapping novel observable parameters prior standard stat.ml type
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