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Effective semi-supervised learning for structured data using Emb e dding GANs
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DOI：10.1016/j.patrec.2021.07.019.png)
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Abstract
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The semi-supervised learning(SSL) was proposed to deal with the situation that only a few samples were labeled, so how to make the most use of the existing samples is crucial. In general, we apply data augmentation methods, like Generative Adversarial Networks(GAN), to increase the number of data when facing unstructured data. However, things get totally different with structured data, the continuity of neural networks limits their use in category variables. In this paper, we propose a semi-supervised Embedding GAN(EmGAN) to solve that problem. We add an embedding layer before the discriminator to better characterize category features and design a new loss function to further train our model. Moreover, the structures of the generator and discriminator are modified to match structured data. With the experiments of nonparametric statistical test, EmGAN shows its advantages in processing structured samples. (c) 2021 Elsevier B.V. All rights reserved.
Keywords:
GAN
Embedding
Semi-supervised learning
Structured data
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