Fig. 4
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(A) UMAP projection of FP18 training set partitioned into 50 clusters via K-means. (B) Label propagation from spectroscopically confirmed centroids to 95% of cluster members. (C) Ground-truth spectroscopic labels for FP18 training set. (D) Random forest predictions on FP18 testing set. (E) Ground-truth spectroscopic labels for FP18 testing set. Axes D1 and D2 represent the reduced dimensions and do not carry physical meaning. The qualitative similarity between panels (D) and (E) demonstrates the effectiveness of our SSL approach.
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