,
Jan Martens
,
Erik de Vink
Creative Commons Attribution 4.0 International license
An asymptotic lowerbound of Ω((m+n)log n) is established for partition refinement algorithms that decide bisimilarity on labeled transition systems. The lowerbound is obtained by subsequently analysing two families of deterministic transition systems - one with a growing action set and another with a fixed action set. For deterministic transition systems with a one-letter action set, bisimilarity can be decided with fundamentally different techniques than partition refinement. In particular, Paige, Tarjan, and Bonic give a linear algorithm for this specific situation. We show, exploiting the concept of an oracle, that the approach of Paige, Tarjan, and Bonic is not of help to develop a generic algorithm for deciding bisimilarity on labeled transition systems that is faster than the established lowerbound of Ω((m+n)log n).
@InProceedings{groote_et_al:LIPIcs.CONCUR.2021.31,
author = {Groote, Jan Friso and Martens, Jan and de Vink, Erik},
title = {{Bisimulation by Partitioning Is \Omega((m+n)log n)}},
booktitle = {32nd International Conference on Concurrency Theory (CONCUR 2021)},
pages = {31:1--31:16},
series = {Leibniz International Proceedings in Informatics (LIPIcs)},
ISBN = {978-3-95977-203-7},
ISSN = {1868-8969},
year = {2021},
volume = {203},
editor = {Haddad, Serge and Varacca, Daniele},
publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
address = {Dagstuhl, Germany},
URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.CONCUR.2021.31},
URN = {urn:nbn:de:0030-drops-144087},
doi = {10.4230/LIPIcs.CONCUR.2021.31},
annote = {Keywords: Bisimilarity, partition refinement, labeled transition system, lowerbound}
}