Mine

\begin{equation}\label{eq:BigEq}
PF=\tbinom{Objective Space}{\overbrace{\left[ \begin{array}{cccc}
	f_1\left(\vec{×_1}\right) &	f_1\left(\vec{×_2}\right) & \cdots & f_1\left(\vec{×_n}\right) \\
	f_2\left(\vec{×_1}\right) &	f_2\left(\vec{×_2}\right) & \cdots & f_2\left(\vec{×_n}\right) \\
	\vdots & \vdots & \ddots & \vdots \\
	f_k\left(\vec{×_1}\right) &	f_k\left(\vec{×_2}\right) & \cdots & f_k\left(\vec{×_n}\right) \\
	\end{array}\right]}}\rbrace{Solution Space}
\end{equation}