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Crossing Theory and Hierarchy Mapping

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1 Author(s)

Techniques are introduced which are applicable to machine construction of digraph maps. These techniques are oriented toward reduction of the number of crossings in a map as a means of improving the readability of hierarchical structures. Permuting, psi-factoring, rotating, twirling, and absorbing are among the techniques considered. Examples are given to illustrate these techniques. When these and related procedures are fully developed for use with machine-interactive processes, they will facilitate group modeling efforts.

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Systems, Man and Cybernetics, IEEE Transactions on  (Volume:7 ,  Issue: 7 )