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Rapport (Rapport De Recherche) Année : 2014

The Emptiness Problem for Tree Automata with at Least One Disequality Constraint is NP-hard

Résumé

The model of tree automata with equality and disequality constraints was introduced in 2007 by Filiot, Talbot and Tison. In this paper we show that if there is at least one disequality constraint, the emptiness problem is NP-hard.
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Dates et versions

hal-01089711 , version 1 (02-12-2014)

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Pierre-Cyrille Héam, Vincent Hugot, Olga Kouchnarenko. The Emptiness Problem for Tree Automata with at Least One Disequality Constraint is NP-hard. [Research Report] FEMTO-ST. 2014. ⟨hal-01089711⟩
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