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Complexity of Printing an Acyclic Automaton

Franck Guingne, Andre Kempe, Florent Nicart

Presented at Eighth International Conference on Implementation and Application of Automata (CIAA 2003), July 16-18, 2003 Santa Barbara, CA, USA


Abstract

This article estimates the worst-case running time complexity for traversing and printing all successful paths of a normalized trim acyclic automaton. First, we show that the worst-case structure is a garland with distribution of arcs on states as uniform as possible. Then, we prove that the complexity is maximum when we have a distribution of e (Neper constant) outgoing arcs per state on average,and that it can be exponential in the number of arcs.