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Efficient weighted expressions conversion

Published online by Cambridge University Press:  06 September 2007

Faissal Ouardi
Affiliation:
L.I.T.I.S., University of Rouen, France; [email protected]; [email protected]
Djelloul Ziadi
Affiliation:
L.I.T.I.S., University of Rouen, France; [email protected]; [email protected]
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Abstract

J. Hromkovic et al. have given an elegant method to convert a regular expression of size n into an ε-free nondeterministic finite automaton having O(n) states and O(nlog2(n)) transitions. This method has been implemented efficiently in O(nlog2(n)) time by C. Hagenah and A. Muscholl. In this paper we extend this method to weighted regular expressions and we show that it can be achieved in O(nlog2(n)) time.

Type
Research Article
Copyright
© EDP Sciences, 2007

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