Brief Announcement: Distributed Graph Problems Through an Automata-Theoretic Lens

Authors Yi-Jun Chang , Jan Studený , Jukka Suomela



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Author Details

Yi-Jun Chang
  • ETH Zürich, Switzerland
Jan Studený
  • Aalto University, Finland
Jukka Suomela
  • Aalto University, Finlad

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Yi-Jun Chang, Jan Studený, and Jukka Suomela. Brief Announcement: Distributed Graph Problems Through an Automata-Theoretic Lens. In 34th International Symposium on Distributed Computing (DISC 2020). Leibniz International Proceedings in Informatics (LIPIcs), Volume 179, pp. 41:1-41:3, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2020)
https://doi.org/10.4230/LIPIcs.DISC.2020.41

Abstract

We study the following algorithm synthesis question: given the description of a locally checkable graph problem Π for paths or cycles, determine in which instances Π is solvable, determine what is the locality of Π, and construct an asymptotically optimal distributed algorithm for solving Π (in the usual LOCAL model of distributed computing). To answer such questions, we represent Π as a nondeterministic finite automaton ℳ over a unary alphabet, and identify polynomial-time-computable properties of automaton ℳ that capture the locality and solvability of problem Π.

Subject Classification

ACM Subject Classification
  • Theory of computation → Formal languages and automata theory
  • Theory of computation → Models of computation
  • Theory of computation → Distributed algorithms
Keywords
  • Algorithm synthesis
  • locally checkable labeling problems
  • LOCAL model
  • locality
  • distributed computational complexity
  • nondeterministic finite automata

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References

  1. Alkida Balliu, Sebastian Brandt, Yi-Jun Chang, Dennis Olivetti, Mikaël Rabie, and Jukka Suomela. The Distributed Complexity of Locally Checkable Problems on Paths is Decidable. In Proc. PODC, 2019. URL: https://doi.org/10.1145/3293611.3331606.
  2. Alkida Balliu, Sebastian Brandt, Yuval Efron, Juho Hirvonen, Yannic Maus, Dennis Olivetti, and Jukka Suomela. Classification of distributed binary labeling problems. In Proc. DISC, 2020. Google Scholar
  3. Sebastian Brandt, Juho Hirvonen, Janne H Korhonen, Tuomo Lempiäinen, Patric R J Östergård, Christopher Purcell, Joel Rybicki, Jukka Suomela, and Przemysław Uznański. LCL problems on grids. In Proc. PODC, 2017. URL: https://doi.org/10.1145/3087801.3087833.
  4. Moni Naor and Larry Stockmeyer. What Can be Computed Locally? SIAM Journal on Computing, 24(6):1259-1277, 1995. URL: https://doi.org/10.1137/S0097539793254571.
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