Semi-Supervised Training of Structured Output Neural Networks with an Adversarial Loss
Résumé
We propose a method for semi-supervised training of structured-output neural networks.Inspired by the framework of Generative Adversarial Networks (GAN), we train a discriminator network to capture the notion of `quality' of network output.To this end, we leverage the qualitative difference between outputs obtained on the labelled training data and unannotated data.We then use the discriminator as a source of error signal for unlabelled data.This effectively boosts the performance of a network on a held out test set.Initial experiments in image segmentation demonstrate that the proposed framework enables labelling two times less data than in a fully supervised scenario, while achieving the same network performance.
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