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    • ImPrEd: An Improved Force-Directed Algorithm that Prevents Nodes from Crossing Edges 

      Simonetto, Paolo; Archambault, Daniel; Auber, David; Bourqui, Romain (The Eurographics Association and Blackwell Publishing Ltd., 2011)
      PrEd [Ber00] is a force-directed algorithm that improves the existing layout of a graph while preserving its edge crossing properties. The algorithm has a number of applications including: improving the layouts of planar ...