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. 2024 Dec 28;14:31353. doi: 10.1038/s41598-024-82719-7

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© The Author(s) 2024

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Fig. 2 — t-SNE⁴⁵ visualized the feature space distribution of E(I) extracted from the feature extractor. (a) Shows the initial feature distribution, with a large domain gap between the source and target domains. (b) After epoch 10 of adversarial learning, the domain gap gradually decreases. (c) After epoch 40 of adversarial learning, the domain gap is small enough to confuse the domain discriminator.