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FSTTCS
2010
Springer
13 years 7 months ago
Average Analysis of Glushkov Automata under a BST-Like Model
We study the average number of transitions in Glushkov automata built from random regular expressions. This statistic highly depends on the probabilistic distribution set on the e...
Cyril Nicaud, Carine Pivoteau, Benoît Razet
CAI
2009
Springer
14 years 4 months ago
A Backward and a Forward Simulation for Weighted Tree Automata
Two types of simulations for weighted tree automata (wta) are considered. Wta process trees and assign a weight to each of them. The weights are taken from a semiring. The two type...
Andreas Maletti
FCT
2005
Springer
14 years 3 months ago
Deterministic Automata on Unranked Trees
Abstract. We investigate bottom-up and top-down deterministic automata on unranked trees. We show that for an appropriate definition of bottom-up deterministic automata it is poss...
Julien Cristau, Christof Löding, Wolfgang Tho...
FSTTCS
2009
Springer
14 years 4 months ago
On Nondeterministic Unranked Tree Automata with Sibling Constraints
ABSTRACT. We continue the study of bottom-up unranked tree automata with equality and disequality constraints between direct subtrees. In particular, we show that the emptiness pro...
Christof Löding, Karianto Wong
ILC
2007
Springer
14 years 3 months ago
A Playful Glance at Hierarchical Questions for Two-Way Alternating Automata
Two-way alternating automata were introduced by Vardi in order to study the satisfiability problem for the modal µ-calculus extended with backwards modalities. In this paper, we ...
Jacques Duparc, Alessandro Facchini