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Denoising Adversarial Autoencoders: Classifying Skin Lesions Using Limited Labelled Training Data
We propose a novel deep learning model for classifying medical images in the
setting where there is a large amount of unlabelled medical data available, but
labelled data is in limited supply. We consider the specific case of
classifying skin lesions as either malignant or benign. In this setting, the
proposed approach -- the semi-supervised, denoising adversarial autoencoder --
is able to utilise vast amounts of unlabelled data to learn a representation
for skin lesions, and small amounts of labelled data to assign class labels
based on the learned representation. We analyse the contributions of both the
adversarial and denoising components of the model and find that the combination
yields superior classification performance in the setting of limited labelled
training data.Comment: Under consideration for the IET Computer Vision Journal special issue
on "Computer Vision in Cancer Data Analysis
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