\begin{table}%t7
 \caption {\label{t5}Summary of the performance of the SVM regression 
models for predicting the input APs of the galaxy models.}
 %\centerline
{
 \small
 \begin{tabular}{l c c c}          
 \hline\hline                        
  Astrophysical parameter                & mean(real-predicted)/mean(real) & sd(real-predicted)/mean(real) & SVs   \\
 \hline
                                       & Early-type galaxies             &                               &       \\
$p_{1}$                                & --0.008                          & 0.250                         & 674   \\
$p_{2}$                                & --0.001                          & 0.076                         & 646   \\
\hline
                                       & Spiral galaxies                 &                               &       \\
$p_{1}$                                & 0.018                           & 0.384                         & 2440  \\
$p_{2}$                                & 0.010                           & 0.451                         & 1866  \\
infall timescale                       & 0.009                           & 0.234                         & 1786  \\
\hline
                                       & Irregular galaxies              &                               &       \\
$p_{1}$                                & 0.004                           & 0.174                         & 647   \\
$p_{2}$                                & 0.030                           & 0.519                         & 736   \\
infall timescale                       & 0.089                           & 0.393                         & 655   \\
\hline
                   & Quenched star-forming galaxies              &                               &       \\
$p_{1}$                                & 0.014                           & 0.195                         & 3116  \\
$p_{2}$                                & 0.044                           & 0.479                         & 3127  \\
$p_{3}$                                & 0.003                           & 0.335                         & 3077  \\
infall timescale                       & 0.038                           & 0.524                         & 3466  \\
\hline
\end{tabular}}
\par
\medskip
{\small \textsc{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.}
\end{table}