Table 4.
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 two example galaxies TNG 539333 and TNG 294869.
| Galaxy | Pixel count | Target | R2 | percentile | RMSE | NMAD | ⟨ΔY⟩ | ρ |
|---|---|---|---|---|---|---|---|---|
| Σ⋆/(M⊙ pc−2) | 0.973 | 87 | 0.078 | 0.0518 | −0.0016 | 0.995 | ||
| TNG 539333 | 54 030 | Z⋆ | 0.682 | 90 | 0.053 | 0.0502 | −0.0259 | 0.878 |
| t⋆/Gyr | −2.653 | 26 | 0.059 | 0.0628 | 0.0349 | 0.013 | ||
| Σ⋆/(M⊙ pc−2) | 0.890 | 12 | 0.115 | 0.1140 | 0.0702 | 0.968 | ||
| TNG 294869 | 76 151 | Z⋆ | 0.192 | 41 | 0.062 | 0.0629 | −0.0337 | 0.693 |
| t⋆/Gyr | −2.520 | 28 | 0.117 | 0.1185 | 0.0717 | 0.082 | ||
Notes. Left to right: Galaxy; number of pixels; target; coefficient of determination (R2); the percentile of the coefficient of determination for that galaxy; 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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