\begin{table}[!htp]\centering
\begin{tabular}{r|r|r|r}\hline
Classifier &H-F1 &H-Prec. &H-Rec. \\
\hline
W/O int. nodes &0.5487 &\textbf{0.4783} &0.6435 \\
+ int. nodes &\textbf{0.5548} &0.4782 &\textbf{0.6607} \\
\hline
\end{tabular}
\caption{Validation results with some internal nodes }\label{tab:internal_nodes_validation_set}
\end{table}