Category Hierarchy
Category HierarchyA 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.
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(last edited November 6, 2009)
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