Fig. 5.
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Accuracy of the GPR emulator evaluated by a leave-one-out cross-validation, shown here for the case where the aperture mass maps are constructed from the concatenation of all four tomographic redshift bins (i.e. no tomography). The x axis depicts the data vector entry, and the y axis the relative difference between predicted and measured value. The 26 individual dotted lines correspond to one cosmology that is left out of the training set and then predicted, the solid black line is the mean of all dotted lines. The black dashed lines depict the standard deviation from the Covariance Training Set.
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