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SUMO
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Sigma KEE  Tree
KB Term:
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tree
A Tree is a
DirectedGraph
that has no
GraphLoop
s.
Relationships
Parents
directed graph
The
Class
of directed graphs. A directed graph is a
Graph
in which all
GraphArc
s have direction, i.e. every
GraphArc
has an initial node (see
InitialNodeFn
) and a terminal node (see
TerminalNodeFn
).
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Sigma version 3.0 is
open source software
produced by
Articulate Software
and its partners