Table 1
Results for the “cleaned sample” of the PHAT-1 catalog with one-quarter of galaxies used for training and the remaining three-quarters used for evaluation, shown for SPIDERz as determined in this work along with other empirical codes and the two best performing template fitting codes as reported in Hildebrandt et al. (2010).
| 14-band | 18-band | |||
| Code | Outlier % | R-RMS | Outlier % | R-RMS |
|
|
||||
| SPIDERz (0.1) | 15.3 | 0.067 | 18.9 | 0.059 |
| SPIDERz (0.2) | 15.3 | 0.064 | 13.9 | 0.062 |
| ANNz | 36.5 | 0.078 | 29.0 | 0.074 |
| χ2 Emp. | 13.3 | 0.066 | 15.3 | 0.067 |
| Poly Fit | 9.4 | 0.051 | 14.5 | 0.052 |
| Regress. Trees | 21.6 | 0.067 | 19.0 | 0.066 |
|
|
||||
| BPz | 7.8 | 0.041 | 7.5 | 0.060 |
| LePhare | 4.7 | 0.038 | 4.9 | 0.040 |
Notes. Results for SPIDERz are shown for bin sizes of both 0.1 and 0.2 in redshift. Outliers are defined by Eq. (1) and the reduced RMS is given by Eq. (2) with outliers excluded. As discussed in Sect. 3.1 a much smaller training set was available for the SPIDERz determinations than was available for the others.
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