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Fast, Expressive SE$(n)$ Equivariant Networks through Weight-Sharing in Position-Orientation Space
March 18, 2024, 4:42 a.m. | Erik J Bekkers, Sharvaree Vadgama, Rob D Hesselink, Putri A van der Linden, David W Romero
cs.LG updates on arXiv.org arxiv.org
Abstract: Based on the theory of homogeneous spaces we derive geometrically optimal edge attributes to be used within the flexible message-passing framework. We formalize the notion of weight sharing in convolutional networks as the sharing of message functions over point-pairs that should be treated equally. We define equivalence classes of point-pairs that are identical up to a transformation in the group and derive attributes that uniquely identify these classes. Weight sharing is then obtained by conditioning …
abstract arxiv cs.lg edge framework functions math.gr networks notion space spaces theory through type
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