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Decoupling Global and Local Representations via Invertible Generative Flows

ICLR 2021 · Image generation › Autoregressive and latent generation · approach: Hierarchical VQ-VAE generation · 1 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Condition every flow coupling layer on z rather than using z only in the prior Gaussian (ablation)VAE-flow model · CIFAR-10BPD: 3.31 -> 3.27Helped
Condition every flow coupling layer on z rather than using z only in the prior Gaussian (ablation)VAE-flow model · CIFAR-10FID: 43.34 -> 37.52Helped
Replace exponential scale parameterization with the bounded tanh scale parameterization (ablation)Affine coupling layers · Image benchmarksdensity estimationHelped
Replace original Glow organization with the refined flow architecture (ablation)Glow · CIFAR-10bits/dim: 3.35 -> 3.33Helped
Add the VAE encoder and condition the refined Glow decoder on global latent zGlow: refined · CIFAR-10BPD: 3.31 -> 3.27Helped
Add the VAE encoder and condition the refined Glow decoder on global latent zGlow: refined · CIFAR-10FID: 43.34 -> 37.52Helped

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