Overlay maps are, in my opinion, extremely powerful visualizations of how siloed/stovepiped' many (most?) scientific disciplines are. The Lens remains one of the very few bibliographical/bibliometric databases that allows users to easily download the metadata of large amounts of scholarly publications. That should allow us to make these types of maps. We're currently doing a research project on 'stability' - a concept that is used in many disciplines. What we'd like to do is to show three overlay maps: * one that maps ALL pubs from all scientific disciplined (and ONLY all pubs) that have stability in their titles, abstracts or keywords (from citing to cited) * one map in which we can show ONLY one of these high-level JCR disciplines on the left and we then see which disciplines are cited on the right, with the usual edges * one map in which we do the opposite: here we would JUST see the cited articles in one scientific category and the lines would show which categories on the left side that are BEING cited.

The icing on the cake on all of this would be if some metrics could also be displayed in the top left corner, especially for the second bullet here - some metric conveying the 'insularity' of a scientific discipline.