Few-Shot Continual Learning for Conditional Generative Adversarial Networks

05/19/2023
by   Cat P. Le, et al.
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In few-shot continual learning for generative models, a target mode must be learned with limited samples without adversely affecting the previously learned modes. In this paper, we propose a new continual learning approach for conditional generative adversarial networks (cGAN) based on a new mode-affinity measure for generative modeling. Our measure is entirely based on the cGAN's discriminator and can identify the existing modes that are most similar to the target. Subsequently, we expand the continual learning model by including the target mode using a weighted label derived from those of the closest modes. To prevent catastrophic forgetting, we first generate labeled data samples using the cGAN's generator, and then train the cGAN model for the target mode while memory replaying with the generated data. Our experimental results demonstrate the efficacy of our approach in improving the generation performance over the baselines and the state-of-the-art approaches for various standard datasets while utilizing fewer training samples.

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