\begin{table}[htbp]
\centering
\caption{HVBLL Advantage Summary (small datasets)}
\label{tab:hvbll_advantage}
\begin{tabular}{lccccccc}
\toprule    
\multirow{2}{*}{Model} &  & \multicolumn{2}{c}{NLL} & \multicolumn{2}{c}{MAE} & \multicolumn{2}{c}{CRPS} & \\
&  & AI & WR & AI & WR & AI & WR & \\
\cmidrule(lr){2-3} \cmidrule(lr){4-5} \cmidrule(lr){6-7}
\midrule
VBLL & 0.553 & 81.0 \% & 0.073 & 66.7 \% & 0.113 & 66.7 \% & 21 \\
BLL & 9.367 & 100.0 \% & 0.365 & 100.0 \% & 0.548 & 100.0 \% & 21 \\
MC-Dropout & 1.777 & 90.5 \% & 0.020 & 61.9 \% & 0.152 & 81.0 \% & 21 \\
PNN & 11.261 & 100.0 \% & 0.041 & 71.4 \% & 0.080 & 85.7 \% & 21 \\
SWAG & 2.133 & 100.0 \% & 0.380 & 76.2 \% & 0.424 & 100.0 \% & 21 \\
DVI & 1.311 & 100.0 \% & 0.153 & 95.2 \% & 0.154 & 95.2 \% & 21 \\
MDN & 3.063 & 100.0 \% & 0.332 & 90.5 \% & 0.533 & 100.0 \% & 21 \\
\midrule
\textbf{Overall} & \textbf{4.209} & \textbf{95.9 \%} & \textbf{0.195} & \textbf{80.3 \%} & \textbf{0.286} & \textbf{89.8 \%} & \textbf{21} \\
\bottomrule
\end{tabular}
\begin{tablenotes}
\small
\item Note: Average Improvement represents the relative improvement of HVBLL over each baseline model (positive values indicate HVBLL performs better). Win Rate shows the percentage of cases where HVBLL outperforms the baseline model. All metrics are calculated on test data across 21 dataset cases. Win Rate is calculated as the percentage of cases where the target model outperforms the baseline model. 
\end{tablenotes}
\end{table}