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24 June 2024
  » arxiv » 2302.00236

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Generative Adversarial Symmetry Discovery
Jianke Yang ; Robin Walters ; Nima Dehmamy ; Rose Yu ;
Date 1 Feb 2023
AbstractDespite the success of equivariant neural networks in scientific applications, they require knowing the symmetry group a priori. However, it may be difficult to know the right symmetry to use as an inductive bias in practice and enforcing the wrong symmetry could hurt the performance. In this paper, we propose a framework, LieGAN, to automatically discover equivariances from a dataset using a paradigm akin to generative adversarial training. Specifically, a generator learns a group of transformations applied to the data, which preserves the original distribution and fools the discriminator. LieGAN represents symmetry as interpretable Lie algebra basis and can discover various symmetries such as rotation group $mathrm{SO}(n)$ and restricted Lorentz group $mathrm{SO}(1,3)^+$ in trajectory prediction and top quark tagging tasks. The learned symmetry can also be readily used in several existing equivariant neural networks to improve accuracy and generalization in prediction.
Source arXiv, 2302.00236
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