\begin{table}[htbp]
\centering\scriptsize
\caption{Task A — MAE (×100) by municipality size, horizon 4-6}\label{tab:het_a_mun_size}
\begin{threeparttable}
\begin{tabular}{lrrr}
\toprule
Model & large & medium & small \\
\midrule
Naive: municipal median & 33.47 & 33.56 & 44.33 \\
Hedonic OLS & 20.70 & 23.88 & 33.29 \\
Ridge & 20.70 & 23.88 & 33.29 \\
Elastic net & 20.62 & 23.80 & 33.26 \\
SVR (subsample) & 19.67 & 23.41 & 35.09 \\
Random forest & 19.31 & 22.88 & 32.18 \\
XGBoost & 18.79 & 22.65 & 32.32 \\
LightGBM & 18.71 & 22.35 & 31.77 \\
Quantile MLP & 22.05 & 26.30 & 37.51 \\
HSHN (no pooling) & 20.61 & 23.78 & 32.90 \\
HSHN (full pooling) & 20.96 & 24.22 & 32.91 \\
HSHN (partial pooling) & 20.63 & 23.79 & 32.92 \\
\bottomrule
\end{tabular}
\end{threeparttable}
\end{table}