Optimization of a nonlinear 1D feature, shown as contour lines, for a 2D non-Gaussian distribution. Inset: Principal component analysis allows extraction of only a linear feature.
From the article:
Renormalized Mutual Information for Artificial Scientific DiscoveryLeopoldo Sarra, Andrea Aiello, and Florian Marquardt
Phys. Rev. Lett. 126, 200601 (2021)
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