Towards a library of synthetic galaxy spectra and preliminary results of classification and parametrization of unresolved galaxies for Gaia. II

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Volume 504 / No 3 (September IV 2009)

A&A, 504 3 (2009) 1071-1084

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Table 7:

Summary of the performance of the SVM regression models for predicting the input APs of the galaxy models.
Astrophysical parameter	mean(real-predicted)/mean(real)	sd(real-predicted)/mean(real)	SVs
	Early-type galaxies
p₁	-0.008	0.250	674
p₂	-0.001	0.076	646
	Spiral galaxies
p₁	0.018	0.384	2440
p₂	0.010	0.451	1866
infall timescale	0.009	0.234	1786
	Irregular galaxies
p₁	0.004	0.174	647
p₂	0.030	0.519	736
infall timescale	0.089	0.393	655
	Quenched star-forming galaxies
p₁	0.014	0.195	3116
p₂	0.044	0.479	3127
p₃	0.003	0.335	3077
infall timescale	0.038	0.524	3466

NOTE. The sample is for zero redshift and interstellar extinction ( $A_{\rm v}$ ). The second and third columns list the mean and rms errors, respectively. The final column gives the number of support vectors in the SVM model.

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