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Table 2.
Description of the data refinement test.
| Data refinement tests | Description | Training set | Validation set |
|---|---|---|---|
| Baseline | Galaxies without measurements in any of the bands are excluded. | W1+W3: 22 378 | W1+W3: 5581 |
| G09+COSMOS: 9073 | G09+COSMOS: 2269 | ||
| Cross-validation (CV) | Comparison of i-band filters to confirm that the two CFHT filters provide consistent and comparable measurements. | W1+W3: 23 592 | W1+W3: 5581 |
| G09+COSMOS: 7606 | G09+COSMOS: 1902 | ||
| Impute (non-NaN) | Investigation into handling galaxies with NaN values in the NB fluxes and the use of interpolation through a quadratic fit. | W1+W3: 30 383 | W1+W3: 7561 |
| G09+COSMOS: 7606 | G09+COSMOS: 1902 | ||
| Low signal-to-noise ratio fluxes (Low S/N) | Investigation of the treatment of low signal-to-noise ratio fluxes including those sources with magnitudes equal to 99. | W1+W3: 22 118 | W1+W3: 5529 |
| G09+COSMOS: 7606 | G09+COSMOS: 1902 | ||
| Bright galaxies (i < 22.5) | We limit the magnitudes of the selected band to values less than 22.5. | W1+W3: 22 378 | W1+W3: 5581 |
| G09+COSMOS: 7606 | G09+COSMOS: 1902 | ||
| Galactic extinction correction (Ext. Correction) | Study on the Galactic extinction correction in the BB and NB fluxes. | W1+W3: 22 378 | W1+W3: 5581 |
| G09+COSMOS: 7606 | G09+COSMOS: 1902 | ||
| Only NBs (NBs) | Analysis of the importance of the more general features of the SED provided in the BBs. | W1+W3: 22 378 | W1+W3: 5581 |
| G09+COSMOS: 7606 | G09+COSMOS: 1902 | ||
| SED in the blue wavelength range (blue-lines) | Indicates the importance of the lines detected in the blue range. | W1+W3: 22 378 | W1+W3: 5581 |
| G09+COSMOS: 7606 | G09+COSMOS: 1902 |
Notes. Summary of studies on observational effects in photometric redshift estimation. Dimensions of the training and validation sets for the combination of data in W1 and W3, and for the combination of data in the fields G09 and COSMOS.
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