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Table 5.

Accuracy scores (as defined in Sect. 3.3) for the three galaxy properties (Σ, Z, and t) using four Euclid bands and a DNN for the galaxy TNG 539333 O2 projection and TNG 294869 O1 projection as an example of edge-on cases.

Galaxy Pixel count Target R2 RMSE NMAD ⟨ΔY ρ
Σ/(M pc−2) 0.971 0.098 0.0852 −0.0489 0.994
TNG 539333 30 171 Z 0.665 0.081 0.0673 0.0394 0.893
t/Gyr −1.522 0.097 0.0878 −0.0155 −0.345

Σ/(M pc−2) 0.963 0.093 0.0991 0.0298 0.983
TNG 294869 38 116 Z 0.175 0.089 0.1041 0.0664 0.769
t/Gyr −0.918 0.130 0.1479 0.0778 0.015

Notes. Left to right: Galaxy; number of pixels; target; coefficient of determination (R2); root-mean-square error (RMSE); normalised median absolute deviation (NMAD); and bias (⟨ΔY⟩, where Y represents the target galaxy property); Pearson ρ coefficient.

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