代码
\begin{table}\caption{Global caption}\begin{minipage}{.5\linewidth}% \caption{}\centering\begin{tabular}{ccccc}\hline& $d_1$ & $d_2$ & $d_3$ & $d_4$ \\\hline$a_1$ & 0.66 & 0.63 & \textbf{0.95} & 0.65 \\$a_2$ & \textbf{0.90} & \textbf{0.81} & 0.89 & \textbf{0.84} \\$a_3$ & 0.82 & 0.79 & 0.83 & 0.83 \\$a_4$ & 0.74 & 0.76 & 0.84 & 0.77 \\\hline\end{tabular}\end{minipage}\begin{minipage}{.5\linewidth}\centering% \caption{}\begin{tabular}{ccccc}\hline& $d_1$ & $d_2$ & $d_3$ & $d_4$ \\\hline$a_1$ & 4 & 4 & \textbf{1} & 4 \\$a_2$ & \textbf{1} & \textbf{1} & 2 & \textbf{1} \\$a_3$ & 2 & 2 & 3 & 2 \\$a_4$ & 3 & 3 & 4 & 3 \\\hline\end{tabular}\end{minipage} \end{table}
效果
Reference
/questions/2832/how-can-i-have-two-tables-side-by-side
