Fig. 1.
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t-SNE (left) and the UMAP (right) 2D embedding of the 370 GRBs from the rest-frame sample based on T90, z, Ep, z, and Eiso. There are two clusters: one cluster with dots in red (GRBs-I) and the other cluster with dots in blue (GRBs-II). The axes resulting from t-SNE and UMAP have no clear physical interpretation or units, only the structure is meaningful.
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