License: Creative Commons Attribution 4.0 International license (CC BY 4.0)
When quoting this document, please refer to the following
DOI: 10.4230/LIPIcs.CONCUR.2023.33
URN: urn:nbn:de:0030-drops-190277
Go to the corresponding LIPIcs Volume Portal

Bertrand, Clément ; Di Giusto, Cinzia ; Klaudel, Hanna ; Regnault, Damien

Complexity of Membership and Non-Emptiness Problems in Unbounded Memory Automata

LIPIcs-CONCUR-2023-33.pdf (0.8 MB)


We study the complexity relationship between three models of unbounded memory automata: nu-automata (ν-A), Layered Memory Automata (LaMA)and History-Register Automata (HRA). These are all extensions of finite state automata with unbounded memory over infinite alphabets. We prove that the membership problem is NP-complete for all of them, while they fall into different classes for what concerns non-emptiness. The problem of non-emptiness is known to be Ackermann-complete for HRA, we prove that it is PSPACE-complete for ν-A.

BibTeX - Entry

  author =	{Bertrand, Cl\'{e}ment and Di Giusto, Cinzia and Klaudel, Hanna and Regnault, Damien},
  title =	{{Complexity of Membership and Non-Emptiness Problems in Unbounded Memory Automata}},
  booktitle =	{34th International Conference on Concurrency Theory (CONCUR 2023)},
  pages =	{33:1--33:17},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-299-0},
  ISSN =	{1868-8969},
  year =	{2023},
  volume =	{279},
  editor =	{P\'{e}rez, Guillermo A. and Raskin, Jean-Fran\c{c}ois},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{},
  URN =		{urn:nbn:de:0030-drops-190277},
  doi =		{10.4230/LIPIcs.CONCUR.2023.33},
  annote =	{Keywords: memory automata, \nu-automata, LaMA, HRA, complexity, non-emptiness, membership}

Keywords: memory automata, ν-automata, LaMA, HRA, complexity, non-emptiness, membership
Collection: 34th International Conference on Concurrency Theory (CONCUR 2023)
Issue Date: 2023
Date of publication: 07.09.2023

DROPS-Home | Fulltext Search | Imprint | Privacy Published by LZI