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Understanding Deep Generative Models With Generalized Empirical Likelihoods

CVPR 2023 · Probabilistic and scientific modeling › Variational and generative sampling · approach: Score-based generative modeling analysis · 4 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Replace GEL on Pool3 features with KGEL (kernelized moment condition with 1024 witness points)mode dropping detection on CIFAR-10 · CIFAR-10 mode droppingHellinger distance to oracle probabilities: 0.2732 vs 0.6137 (Improved Recall) at 8 missing modesHelped
Use KGEL instead of improved recall/coverage for mode-imbalance estimationmode imbalance experiment on CIFAR-10 · CIFAR-10 mode imbalanceHellinger distance: 0.1178 vs 0.3016 (Improved Recall) at probability 0.1Helped
Add label information (product kernel with delta label kernel) to KGEL to detect improper label conditioningCIFAR-10 label corruption detection · CIFAR-10 with 10-60% label errorsPrecision-recall (AUC)Helped
Use exponential tilting vs empirical likelihood objective in KGEL2 on ImageNettwo-sample GEL on ImageNet models · ImageNet 256x2562^D scoreMixed
Stronger truncation (tau from 1.0 to 0.2) for BigGAN-deep (ablation)BigGAN-deep on ImageNet · ImageNet 256x256 KGEL EL2^D score: 1.735 at tau=1.0 to 3.965 at tau=0.2Hurt
Increase classifier guidance scale of ADM beyond 1.0 (ablation)ADM-G on ImageNet · ImageNet 256x256 KGEL EL2^D score: 1.786 at scale 1.0 to 3.219 at scale 10.0Hurt
Increase number of witness points from 64 to 1024 in KGEL mode dropping (ablation)KGEL on CIFAR-10 Pool3 mode dropping · CIFAR-10 mode droppingHellinger distance: 0.1466 with 1024 vs 0.1891 with 64 (GEL Pool3 2 missing modes)Helped

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