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Radio Galaxy Classification with wGAN-Supported Augmentation

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arxiv 2206.15131 v2 pith:7PP4Q2JB submitted 2022-06-30 astro-ph.IM astro-ph.GA

classification astro-ph.IMastro-ph.GA
keywords classificationdataradioimagestraininggalaxiesmodelswgan
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Novel techniques are indispensable to process the flood of data from the new generation of radio telescopes. In particular, the classification of astronomical sources in images is challenging. Morphological classification of radio galaxies could be automated with deep learning models that require large sets of labelled training data. Here, we demonstrate the use of generative models, specifically Wasserstein GANs (wGAN), to generate artificial data for different classes of radio galaxies. Subsequently, we augment the training data with images from our wGAN. We find that a simple fully-connected neural network for classification can be improved significantly by including generated images into the training set.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Radio Halo Detection in MWA Data using Deep Neural Networks and Generative Data Augmentation

    astro-ph.GA 2024-11 conditional novelty 6.0 of 10

    A diffusion-based generative augmentation pipeline enables a small-data neural classifier to detect diffuse radio halos in MWA/GLEAM images, rediscovering known halos and proposing new candidates.

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