6 problems
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Strong approximation of push-forward densities by RealNVP flows
Let , , and be as in the preceding convergence theorem, and let be a sequence of invertible RealNVP neural networks whose pu…
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The in-training flow group-properties convergence conjecture
A flow is a family of maps with group properties, and neural conjugate flows represent dynamics by composing an invertible map, a flow, and its inverse. Training may either impose…
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Tail-linearity explanation for NSF-layer generalization
Consider normalizing flows built from NSF layers, where the tails of each NSF layer are linear. Tail-linearity conjecture. The observed improved performance in low-sample tail regi…
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Bounded copula density under Lipschitz-continuous diffeomorphisms
Let a random variable have a bounded copula density, and let a Lipschitz-continuous diffeomorphism be applied to it. Bounded-copula-density conjecture. The transformed random varia…
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Conjecture that probabilistic circuits improve better Flow-based compression models
Probabilistic-circuit integration conjecture. Although not tested in the experiments, integrating PCs with better Flow models, such as IDF++, could further improve performance.
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The non-universality conjecture for coupling-based invertible neural networks
Non-universality conjecture. Since the step functions used to establish -universality bypass the uniformity of the transformation by affine coupling flows, the difficulty is i…