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Optimal Neural Network Approximation of Wasserstein Gradient Direction via Convex Optimization. (arXiv:2205.13098v1 [cs.LG])
May 27, 2022, 1:11 a.m. | Yifei Wang, Peng Chen, Mert Pilanci, Wuchen Li
stat.ML updates on arXiv.org arxiv.org
The computation of Wasserstein gradient direction is essential for posterior
sampling problems and scientific computing. The approximation of the
Wasserstein gradient with finite samples requires solving a variational
problem. We study the variational problem in the family of two-layer networks
with squared-ReLU activations, towards which we derive a semi-definite
programming (SDP) relaxation. This SDP can be viewed as an approximation of the
Wasserstein gradient in a broader function family including two-layer networks.
By solving the convex SDP, we obtain the …
approximation arxiv gradient network neural network optimization
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