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Poster

Rejection Sampling IMLE: Designing Priors for Better Few-Shot Image Synthesis

Chirag Vashist · Shichong Peng · Ke Li

Strong blind review: This paper was not made available on public preprint services during the review process Strong Double Blind
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Thu 3 Oct 7:30 a.m. PDT — 9:30 a.m. PDT

Abstract:

An emerging area of research aims to learn deep generative models with limited training data. Implicit Maximum Likelihood Estimation (IMLE), a recent technique, successfully addresses the mode collapse issue of GANs and has been adapted to the few-shot setting, achieving state-of-the-art performance. However, current IMLE-based approaches encounter challenges due to inadequate correspondence between the latent codes selected for training and those drawn during inference. This results in suboptimal test-time performance. To address this issue, we propose RS-IMLE, a novel approach that changes the prior distribution used for training. This leads to substantially higher-quality image generation compared to existing IMLE-based methods, as validated by a theoretical analysis and comprehensive experiments conducted on nine few-shot image datasets.

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