Classifier Training from a Generative Model

Thanh Dat Pham 1 Anuvabh Dutt 2, 1 Denis Pellerin 2 Georges Quénot 1
1 MRIM - Modélisation et Recherche d’Information Multimédia [Grenoble]
LIG - Laboratoire d'Informatique de Grenoble, Inria - Institut National de Recherche en Informatique et en Automatique
2 GIPSA-AGPIG - AGPIG
GIPSA-DIS - Département Images et Signal
Abstract : We investigate the samples derived from generative adversarial networks (GAN) from a classification perspective. We train a classifier on generated samples and on real data and see how they compared on a held out validation set. We see that recent GAN models which produce visually convincing samples are not yet able to match the training on real data. To analyse this we compare training a classifier on generated samples and various sizes of the real training set. We propose architectural and algorithmic changes to reduce this gap. First, we show that a modification to the GAN architecture is needed, which leads to improve generation of samples. Second, we use multiple GAN models as a way to cover the real data distribution, again leading to improvement in classifier training. We also show that in the case of training on small number of samples, a GAN model provides better compression in terms of storage requirements as compared to the real data.
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Submitted on : Wednesday, October 16, 2019 - 9:54:02 PM
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Thanh Dat Pham, Anuvabh Dutt, Denis Pellerin, Georges Quénot. Classifier Training from a Generative Model. Content-Based Multimedia Indexing, Sep 2019, Dublin, Ireland. ⟨hal-02318327⟩

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