Table 2
Results for the MIXED experiment (see text).
Ref.  bias  σ  NMAD  rms   bias_{norm}   σ_{norm}  NMAD_{norm}  RMS_{norm}  


Overall  0.000030  0.028  0.0196  0.028  0.000574  0.023  0.0172  0.023  
[0,z_{1}]  0.008259  0.022  0.0179  0.023  0.007895  0.020  0.0167  0.022  
]z_{1},z_{2}]  0.008975  0.023  0.0195  0.025  0.007828  0.020  0.0171  0.022  
]z_{2},z_{3}]  0.006664  0.035  0.0234  0.035  0.005640  0.028  0.0188  0.029  
>z_{3}  0.008568  0.037  0.0255  0.038  0.005705  0.024  0.0177  0.025  
[0.05,0.6]  0.002224  0.026  0.0188  0.026  0.001643  0.022  0.0163  0.022  
Laurino et al.  0.015  0.015  0.016  0.021  0.014  0.013  0.013  0.019  


 Δz    Δz    Δz    Δz_{norm}    Δz_{norm}    Δz_{norm}   Skewness  Kurtosis  
>0.15  >1σ  >2σ  >0.15  >1σ  >2σ  


Overall  0.12%  22.61%  5.16%  0.04%  23.57%  5.43%  1.37 × 10^{16}  1.8  
[0,z_{1}]  0.03%  27.30%  6.56%  0.02%  27.02%  6.62%  9.73 × 10^{17}  1.8  
]z_{1},z_{2}]  0.02%  28.13%  7.16%  0.01%  28.28%  7.20%  1.23 × 10^{15}  1.8  
]z_{2},z_{3}]  0.36%  22.51%  6.57%  0.08%  22.54%  6.67%  8.03 × 10^{16}  1.8  
> z _{3}  0.50%  20.56%  4.17%  0.16%  22.02%  4.34%  −1.13 × 10^{15}  1.8  
[0.05,0.6]  0.11%  22.84%  5.44%  0.03%  23.62%  5.51%  2.24 × 10^{15}  1.8 
Notes. The table is split in two parts. In the upper half we provide standard statistical indicators (see text for an explanation) used to evaluate the performances of photoz methods. We also include the same indicators for Laurino et al. (2011). In the lower half of the table, we report the fraction (in percentage) of outliers computed using a fixed threshold of 0.15, the more meaningful 1, and 2σ clipping thresholds and the values of skewness and kurtosis of the σ(Δz_{norm}) distributions. The redshift range starting from z = 0 up to the redshift z_{1} = 0.115 includes 50% of the objects in the test set; the second redshift bin, using the range from z_{1} = 0.115 to z_{2} = 0.177, corresponds to an additional 25% of the sample; the third bin, using the range z_{2} = 0.177 to z_{3} = 0.345, corresponds to an additional 15% and, finally, the fourth bin includes all remaining objects (redshift >z_{3} = 0.345). The last row reports the statistics in the redshift range [0.05,0.6] corresponding to the same range covered in Laurino et al. (2011).