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This map is beautiful! But what does (x,y) position mean? If two papers are close on the map are they also close in some other aspect? I mean, what gave this
by udev 11y ago
This map is beautiful!
But what does (x,y) position mean? If two papers are close on the map are they also close in some other aspect?
I mean, what gave this map this particular shape?
- Buetol 11y agoThis has been most probably applied a force-directed layout: https://en.wikipedia.org/wiki/Force-directed_graph_drawing https://en.wikipedia.org/wiki/Force-directed_graph_drawing Basically, it's like having a spring between each node (paper) and letting the equilibrium do the rest.
- carlob 11y agoYes. From their facebook about page: > In laying out the map, an N-body algorithm is run to determine positions based on references between the papers. There are two “forces” involved in the N-body calculation: each paper is repelled from all other papers using an anti-gravity inverse-distance force, and each paper is attracted to all of its references using a spring modelled by Hooke’s law. However it must have taken them a while to converge for 10^6 particles.
- Buetol 11y agoIt's actually pretty fast now, could take max one day to get something like that with https://github.com/anvaka/ngraph.offline.layout https://github.com/anvaka/ngraph.offline.layout
- t4ku 11y agoIt's based on citations. If you go to 'about' on their site, there's more information about what x, y, size, color, brightness encode in the visualization.
- udev 11y agoIf this is the case, I would love to see a similar map for IEEE papers. The citations are free to view on IEEE website.