Automata with Timers

Fuente: arXiv
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Autori principali: Bruyère, Véronique, Pérez, Guillermo A., Staquet, Gaëtan, Vaandrager, Frits W.
Natura: Preprint
Pubblicazione: 2023
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author Bruyère, Véronique
Pérez, Guillermo A.
Staquet, Gaëtan
Vaandrager, Frits W.
author_facet Bruyère, Véronique
Pérez, Guillermo A.
Staquet, Gaëtan
Vaandrager, Frits W.
contents In this work, we study properties of deterministic finite-state automata with timers, a subclass of timed automata proposed by Vaandrager et al. as a candidate for an efficiently learnable timed model. We first study the complexity of the configuration reachability problem for such automata and establish that it is PSPACE-complete. Then, as simultaneous timeouts (we call these, races) can occur in timed runs of such automata, we study the problem of determining whether it is possible to modify the delays between the actions in a run, in a way to avoid such races. The absence of races is important for modelling purposes and to streamline learning of automata with timers. We provide an effective characterization of when an automaton is race-avoiding and establish that the related decision problem is in 3EXP and PSPACE-hard.
format Preprint
id arxiv_https___arxiv_org_abs_2305_07451
institution arXiv
publishDate 2023
record_format arxiv
spellingShingle Automata with Timers
Bruyère, Véronique
Pérez, Guillermo A.
Staquet, Gaëtan
Vaandrager, Frits W.
Formal Languages and Automata Theory
F.4.3
In this work, we study properties of deterministic finite-state automata with timers, a subclass of timed automata proposed by Vaandrager et al. as a candidate for an efficiently learnable timed model. We first study the complexity of the configuration reachability problem for such automata and establish that it is PSPACE-complete. Then, as simultaneous timeouts (we call these, races) can occur in timed runs of such automata, we study the problem of determining whether it is possible to modify the delays between the actions in a run, in a way to avoid such races. The absence of races is important for modelling purposes and to streamline learning of automata with timers. We provide an effective characterization of when an automaton is race-avoiding and establish that the related decision problem is in 3EXP and PSPACE-hard.
title Automata with Timers
topic Formal Languages and Automata Theory
F.4.3
url https://arxiv.org/abs/2305.07451