Mixture models for photometric redshifts | Astronomy & Astrophysics (A&A)

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Volume 650 (June 2021)

A&A, 650 (2021) A90

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Table 6.

MDN performance evaluation exclusively for sources with MDN branch weight_max > 0.8.

IGMM implementation	Photometry	⟨Δz⟩ (z_s < 1)	rms(Δz) (z_s < 1)	⟨Δz⟩, range1 ^(a)
Fully unsup.	griz, W1, W2	0.0004 ± 0.0010	0.0249 ± 0.0038	0.0014 ± 0.0005
Spec. class	griz, W1, W2	0.0035 ± 0.0030	0.0273 ± 0.0045	0.0015 ± 0.0009
Redshift (z_s)	griz, W1, W2	0.0018 ± 0.0013	0.0236 ± 0.0045	−0.0004 ± 0.0004
Spec. class, z_s	griz, W1, W2	−0.0014 ± 0.0012	0.0264 ± 0.0054	0.0042 ± 0.0005
Spec. class	ugriz, W1, W2	0.0036 ± 0.0026	0.0227 ± 0.0058	0.0009 ± 0.0005

IGMM implementation	photometry	rms(Δz), range1 ^(a)	rms(Δz), range2 ^(b)	rms(Δz), range3 ^(c)

Fully unsup.	griz, W1, W2	0.0186 ± 0.0002	0.0201 ± 0.0003	0.0207 ± 0.0004
Spec. class	griz, W1, W2	0.0181 ± 0.0002	0.0207 ± 0.0009	0.0214 ± 0.0007
Redshift (z_s)	griz, W1, W2	0.0182 ± 0.0004	0.0195 ± 0.0005	0.0203 ± 0.0004
Spec. class, z_s	griz, W1, W2	0.0189 ± 0.0013	0.0205 ± 0.0014	0.0207 ± 0.0014
Spec. class	ugriz, W1, W2	0.0163 ± 0.0007	0.0167 ± 0.0008	0.0170 ± 0.0010

Notes. The bias and rms are computed using the definition of clipped bias and rms in PS1-STR (Beck et al. 2021).

^(a)

Restricted to galaxies with z_s < 0.3;

^(b)

restricted to galaxies with z_s < 0.4;

^(c)

restricted to galaxies with z_s < 0.5.

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