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complexity of computation

RAIRO - Theoretical Informatics and Applications (1)

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1 results

Efficient weighted expressions conversion
Faissal Ouardi, Djelloul Ziadi
Journal:

RAIRO - Theoretical Informatics and Applications / Volume 42 / Issue 2 / April 2008

Published online by Cambridge University Press:

06 September 2007, pp. 285-307

Print publication:

April 2008
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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.