\begin{figure}[h]\label{fig:iris}
 \begin{center}
   \epsfile{file=iris.eps,width=8cm,height=6cm}
\caption{A 2-D visualization of iris flower data by Sammon Mapping}
 \end{center}
\end{figure}


\begin{figure}[hb]
 \begin{center}
 \epsfile{file=rnd-500-5.eps,width=8cm,height=5.5cm}
 \caption{A fictitious sketch of fitness landscape of {\it a-needle-in-a-haystack}.
The haystack here is drawn as a two-dimensional flat plane of fitness zero.}
 \end{center}
\end{figure}