A hierarchy is the opposite of a network. *Opposite?*
In graph theory, a "network" would be just a graph (you may want it to be a connected graph.)
A "hierarchy" would be something like a "directed acyclic graph" (directed tree)
or just a graph with specific constraints.

See NetworkVsHierarchy for discussion.

CategoryCategory, CategoryNetwork, CategoryClassification

See NetworkVsHierarchy for discussion.

CategoryCategory, CategoryNetwork, CategoryClassification

View edit of November 6, 2009 or FindPage with title or text search