## 3 Computational Experiments
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \(n\) & \multicolumn{2}{c}{\(\ell_{1}\) MCDA} & \multicolumn{2}{c}{**[PERSON] + [PERSON]**} & \multicolumn{2}{c}{**[PERSON] _et al._**} \\ \hline  & **av. abs\_err** & **av. rel\_err** & **av. abs\_err** & **av. rel\_err** & **av. abs\_err** & **av. rel\_err** \\  & **of angle** & **ra. of length** & **of angle** & **ra. of length** & **of angle** & **ra. of length** \\ \hline
3 & 0.0119 & 0.0373 & 0.0318 & 0.0759 & 0.0560 & 0.0654 \\
8 & 0.0236 & 0.2512 & 0.0499 & 0.2292 & 0.0211 & 0.1588 \\
10 & 0.0279 & 0.3134 & 0.0549 & 0.2781 & 0.0170 & 0.2289 \\
30 & 0.0322 & 0.5785 & 0.0990 & 0.5376 & 0.0072 & 0.5077 \\
50 & 0.0375 & 0.6601 & 0.1393 & 0.6308 & – & – \\ \hline \hline \end{tabular}
\end{table} 
Table 3: The results of \(\ell_{1}\) MCDA and Robust PCAs for one Gaussian distribution with 10% artificial outliers. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline \(n\) & \multicolumn{2}{c}{**knn = 640 (2\%)**} & \multicolumn{2}{c}{**knn = 320 (1\%)**} & \multicolumn{2}{c}{**knn = 160 (0.5\%)**} \\ \hline  & **av. abs\_err** & **av. rel\_err** & **av. abs\_err** & **av. rel\_err** & **av. abs\_err** & **av. rel\_err** \\  & **of angle** & **ra. of length** & **of angle** & **ra. of length** & **of angle** & **ra. of length** \\ \hline
3 & 0.0124 & 0.0499 & 0.0089 & 0.0374 & 0.0121 & 0.0428 \\
10 & 0.0226 & 0.0904 & 0.0294 & 0.0666 & 0.0364 & 0.0805 \\
50 & 0.0269 & 0.5323 & 0.0352 & 0.4931 & 0.0448 & 0.4518 \\ \hline \hline \end{tabular}
\end{table} 
Table 6: The results of \(\ell_{1}\) MCDA on four superimposed Gaussian distributions. \begin{table}
\begin{tabular}{c c c c} \hline \hline \(n\) & \multicolumn{2}{c}{**knn = 640 (2\%)**} & \multicolumn{2}{c}{**knn = 320 (1\%)**} & \multicolumn{2}{c}{**knn = 160 (0.5\%)**} \\ \hline  & **av. abs\_err** & **av. rel\_err** & **av. abs\_err** & **av. rel\_err** & **av. abs\_err** & **av. rel\_err** \\  & **of angle** & **ra. of length** & **of angle** & **ra. of length** & **of angle** & **ra. of length** \\ \hline
3 & 0.0120 & 0.0552 & 0.0155 & 0.0794 & 0.0211 & 0.1420 \\
10 & 0.0225 & 0.3225 & 0.0318 & 0.2458 & 0.0437 & 0.1777 \\
50 & 0.0250 & 0.6220 & 0.0335 & 0.5814 & 0.0430 & 0.5355 \\ \hline \hline \end{tabular}
\end{table} 
Table 7: The results of \(\ell_{1}\) MCDA on four superimposed Student \(t\) distributions. \begin{table}
\begin{tabular}{c c c c} \hline \hline \(n\) & \multicolumn{2}{c}{**knn = 640 (2\%)**} & \multicolumn{2}{c}{**knn = 320 (1\%)**} & \multicolumn{2}{c}{**knn = 160 (0.5\%)**} \\ \hline  & **av. abs\_err** & **av. rel\_err** & **av. abs\_err** & **av. rel\_err** & **av. abs\_err** & **av. rel\_err** \\  & **of angle** & **ra. of length** & **of angle** & **ra. of length** & **of angle** & **ra. of length** \\ \hline
3 & 0.0152 & 0.0396 & 0.0099 & 0.0406 & 0.0171 & 0.0493 \\
10 & 0.0271 & 0.2614 & 0.0208 & 0.3044 & 0.0173 & 0.3615 \\
50 & 0.0379 & 0.6275 & 0.0308 & 0.6566 & 0.0261 & 0.6920 \\ \hline \hline \end{tabular}
\end{table} 
Table 8: The results of \(\ell_{1}\) MCDA on four superimposed Gaussian distributions with 10% artificial outliers. \begin{table}
\begin{tabular}{c c c c c} \hline \hline \(n\) & \multicolumn{2}{c}{**knn = 640 (2\%)**} & \multicolumn{2}{c}{**knn = 320 (1\%)**} & \multicolumn{2}{c}{**knn = 160 (0.5\%)**} \\ \hline  & **av. abs\_err** & **av. rel\_err** & **av. abs\_err** & **av. rel\_err** & **av. abs\_err** & **av. rel\_err** \\  & **of angle** & **ra. of length** & **of angle** & **ra. of length** & **of angle** & **ra. of length** \\ \hline
3 & 0.0120 & 0.0552 & 0.0155 & 0.0794 & 0.0211 & 0.1420 \\
10 & 0.0225 & 0.3225 & 0.0318 & 0.2458 & 0.0437 & 0.1777 \\
50 & 0.0250 & 0.6220 & 0.0335 & 0.5814 & 0.0430 & 0.5355 \\ \hline \hline \end{tabular}
\end{table} 
Table 8: The results of \(\ell_{1}\) MCDA on four superimposed Gaussian distributions with 10% artificial outliers. **Remark 3**.