Definition: A directed acyclic graph with two specially marked nodes, the source s and the sink t.
See also flow network.
Note: After P. Bertolazzi, G. Di Battista, and W. Didimo, Quasi-upward planarity, Algorithmica, 32:474-506 (2002).
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Entry modified 17 December 2004.
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Cite this as:
Paul E. Black, "st-digraph", in Dictionary of Algorithms and Data Structures [online], Paul E. Black, ed., U.S. National Institute of Standards and Technology. 17 December 2004. (accessed TODAY) Available from: http://www.nist.gov/dads/HTML/stdigraph.html