\begin{table}[th]
	\centering
	\caption{Datasets used in experiments}
	\label{tab:benchmark_datasets}
    \hfill
	\subfloat[FCPS datasets]{\begin{tabular}{lrrr}
		\toprule
		Name & $n$ & $d$ & $K$ (Clusters) \\
		\midrule
		Atom & 800 & 3 & 2\\
		Chainlink & 1000 & 3 & 2 \\
		EngyTime & 4096 & 2 & 2 \\
		Hepta & 212 & 3 & 7 \\
		LSun3D & 404 & 3 & 4 \\
		Target & 770 & 2 & 6 \\
		Tetra & 400 & 3 & 4 \\
		TwoDiamonds & 800 & 2 & 2 \\
		WingNut & 1016 & 2 & 2 \\
        \bottomrule
    \end{tabular}}\hfill
	\subfloat[UCI datasets]{\begin{tabular}{lrrr}
		\toprule    
		Name & $n$ & $d$ & $K$ (Classes) \\
        \midrule
        Dermatology&366&33&6\\
        Digits & 1797 & 64 & 10 \\
        Glass & 214 & 9 & 6 \\
        Ionosphere & 351 & 34 & 2 \\
        Iris & 150 & 4 & 3 \\
        Lung & 32 & 54 & 3 \\
        Segmentation & 2310 & 19 & 7 \\
        WDBC & 569 & 30 & 2 \\
        Wine & 178 & 13 & 3 \\
		\bottomrule
	\end{tabular}}
    \hfill
\end{table}