Petri net
<parallel, simulation> A directed, bipartite graph in which nodes are
either "places" (represented by circles) or "transitions" (represented by
rectangles), invented by Carl Adam Petri. A Petri net is marked by placing
"tokens" on places. When all the places with arcs to a transition (its input
places) have a token, the transition "fires", removing a token from each input
place and adding a token to each place pointed to by the transition (its output
places).
Petri nets are used to model concurrent systems, particularly network protocols.
Variants on the basic idea include the coloured Petri Net, Time Petri Net, Timed
Petri Net, Stochastic Petri Net, and Predicate Transition Net.
FAQ.
(1996-09-10)
Nearby terms:
petaflops « petdingo « Peter Chen « Petri net
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