Circular Graph Layout Algorithm

1. Sort nodes with respect to Community Structure (groups)
2. Sort nodes inside of groups based on Graph Centrality
3. Size of node is given by the angle.
   1. Mapping from centrality to angle ($[0,s]\to [0,2\pi ]$)
4. Position Node
   1. $x=R\cos (\alpha )$
   2. $y=R\sin (\alpha )$
   3. Advance by $\frac{\alpha }{a}+\frac{\beta }{2}$
5. Node Radius
   1. $r=R\sin (\frac{\alpha }{2})$

Visually