Fig. 4.

t-SNE plots. Feature map of the last layer of deep learning network. (a) shows the t-SNE plot, which represents the model’s classification efficacy in separating the positive (green) and negative (blue) classes on the balanced test data and (b) the t-SNE plot, which represents the last feature map of the deep learning network on the imbalanced test data. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)