# A Novel Hybrid Recommender System for the Tourism Domain
## 5 Experimental Evaluation and Results
### Evaluation of the Complete Hybrid Recommender System
Hence, since it is better than all other combinations for average precision, as listed in Table 13, combined with the fact that being presented with fewer slates (\(m=4\) instead of 5 or 6) results in a \"lighter\", less tiresome elicitation process for the user, we consider the variant of our _Hybrid RS_ that uses the \(\langle m=4\)_elicitation slates_, \(n=6\)_images shown per slate_\(\rangle\) pair as the one to incorporate into our final system. \begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Age Group** & **Precision** & **Recall** & **Recall UB** & **Relevant Items** & \(Rec_{r}\) \\ \hline
**17–25** & 0.853 & 0.062 & 0.073 & 272.7 & 17.0 \\
**26–35** & 0.886 & 0.063 & 0.072 & 274.3 & 17.3 \\
**46–55** & 0.861 & 0.063 & 0.074 & 269.6 & 17.2 \\
**56–67** & 0.854 & 0.062 & 0.073 & 272.8 & 17.0 \\
**67+** & 0.714 & 0.056 & 0.080 & 249.7 & 14.2 \\ \hline \hline \end{tabular}
\end{table} 
Table 6: Hybrid RS performance; \((m=6,n=4)\). \begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Age Group** & **Precision** & **Recall** & **Recall UB** & **Relevant Items** & \(Rec_{r}\) \\ \hline
**17–25** & 0.858 & 0.062 & 0.073 & 272.7 & 17.1 \\
**26–35** & 0.893 & 0.064 & 0.072 & 275.5 & 17.8 \\
**36–45** & 0.864 & 0.063 & 0.073 & 273.9 & 17.2 \\
**46–55** & 0.868 & 0.063 & 0.073 & 270.5 & 17.3 \\
**56–67** & 0.866 & 0.063 & 0.073 & 272.8 & 17.3 \\
**67+** & 0.725 & 0.058 & 0.080 & 249.5 & 14.5 \\ \hline \hline \end{tabular}
\end{table} 
Table 7: Hybrid RS performance; \((m=4,n=6)\). \begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Age Group** & **Precision** & **Recall** & **Recall UB** & **Relevant Items** & \(Rec_{r}\) \\ \hline
**17–25** & 0.858 & 0.062 & 0.073 & 272.7 & 17.1 \\
**26–35** & 0.893 & 0.064 & 0.072 & 275.5 & 17.8 \\
**36–45** & 0.864 & 0.063 & 0.073 & 273.9 & 17.2 \\
**46–55** & 0.868 & 0.063 & 0.073 & 270.5 & 17.3 \\
**56–67** & 0.866 & 0.063 & 0.073 & 272.8 & 17.3 \\
**67+** & 0.725 & 0.058 & 0.080 & 249.5 & 14.5 \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Hybrid RS performance; \((m=4,n=4)\). \begin{table}
\begin{tabular}{c c c c c c} \hline \hline
**Age Group** & **Precision** & **Recall** & **Recall UB** & **Relevant Items** & \(Rec_{r}\) \\ \hline
**17-25** & 0.851 & 0.062 & 0.073 & 272.2 & 17.0 \\
26–35 & 0.872 & 0.063 & 0.072 & 275.2 & 17.4 \\
36–45 & 0.849 & 0.061 & 0.072 & 274.1 & 16.9 \\
46–55 & 0.841 & 0.061 & 0.074 & 270.0 & 16.8 \\
56–67 & 0.852 & 0.062 & 0.073 & 272.7 & 17.0 \\
67+ & 0.717 & 0.058 & 0.080 & 248.9 & 14.3 \\ \hline \hline \end{tabular}
\end{table} 
Table 10: Hybrid RS performance; (\(m=6,n=5\)). \begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Age Group** & **Precision** & **Recall** & **Recall UB** & **Relevant Items** & \(Rec_{r}\) \\ \hline
**17–25** & 0.851 & 0.062 & 0.073 & 272.9 & 17.2 \\
26–35 & 0.886 & 0.064 & 0.072 & 275.7 & 17.7 \\
36–45 & 0.868 & 0.062 & 0.072 & 274.4 & 17.3 \\
46–55 & 0.845 & 0.061 & 0.074 & 270.1 & 16.9 \\
56–67 & 0.855 & 0.062 & 0.073 & 273.0 & 17.1 \\
67+ & 0.708 & 0.059 & 0.080 & 249.0 & 14.6 \\ \hline \hline \end{tabular}
\end{table} 
Table 11: Hybrid RS performance; (\(m=5,n=6\)). \begin{table}
\begin{tabular}{c c c c c} \hline \hline
**Age Group** & **Precision** & **Recall** & **Recall UB** & **Relevant Items** & \(Rec_{r}\) \\ \hline
**17–25** & 0.855 & 0.062 & 0.073 & 272.3 & 17.1 \\
26–35 & 0.876 & 0.063 & 0.072 & 275.2 & 17.5 \\
36–45 & 0.853 & 0.062 & 0.073 & 273.7 & 17.0 \\
46–55 & 0.840 & 0.061 & 0.073 & 270.3 & 16.8 \\
56–67 & 0.841 & 0.061 & 0.073 & 272.8 & 16.8 \\
67+ & 0.710 & 0.057 & 0.080 & 249.2 & 14.2 \\ \hline \hline \end{tabular}
\end{table} 
Table 12: Hybrid RS performance; (\(m=6,n=6\)).