Each node (dot/point) in the cluster graph below represents a single white paper. They are clustered (grouped) and coloured according to their primary topic, which in this context, represents a theme. Each topic has certain keywords associated with it. The lines joining the different coloured nodes or different clusters represent shared secondary topics. Thus, all connected nodes share some kind of a theme. Hovering your cursor over a node will show you the name of that particular white paper as well as the keywords most strongly associated with its primary topic. Clicking on a node will download that particular white paper. You may also drag nodes around to further investigate the connectivity of the nodes within the graph.