slovodefinícia
petri net
(foldoc)		Petri net

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 (http://daimi.aau.dk/PetriNets/faq/answers.htm).

(1996-09-10)
podobné slovodefinícia
decomposed petri net
(foldoc)		Decomposed Petri Net
DPN

(DPN) A Petri net that has been split into
multiple, interconnected nets. This makes it easier to
analyse or run the net.

DPNs are the basis of concurrency in ConC.

(2006-11-27)

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