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.DISC.2022.51
URN: urn:nbn:de:0030-drops-172423
URL: http://dagstuhl.sunsite.rwth-aachen.de/volltexte/2022/17242/
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Oh, Shunhao ; Randall, Dana ; Richa, Andréa W.

Brief Announcement: Foraging in Particle Systems via Self-Induced Phase Changes

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LIPIcs-DISC-2022-51.pdf (0.4 MB)

Abstract

The foraging problem asks how a collective of particles with limited computational, communication and movement capabilities can autonomously compress around a food source and disperse when the food is depleted or shifted, which may occur at arbitrary times. We would like the particles to iteratively self-organize, using only local interactions, to correctly gather whenever a food particle remains in a position long enough and search if no food particle has existed recently. Unlike previous approaches, these search and gather phases should be self-induced so as to be indefinitely repeatable as the food evolves, with microscopic changes to the food triggering macroscopic, system-wide phase transitions. We present a stochastic foraging algorithm based on a phase change in the fixed magnetization Ising model from statistical physics: Our algorithm is the first to leverage self-induced phase changes as an algorithmic tool. A key component of our algorithm is a careful token passing mechanism ensuring a dispersion broadcast wave will always outpace a compression wave.

BibTeX - Entry

@InProceedings{oh_et_al:LIPIcs.DISC.2022.51,
  author =	{Oh, Shunhao and Randall, Dana and Richa, Andr\'{e}a W.},
  title =	{{Brief Announcement: Foraging in Particle Systems via Self-Induced Phase Changes}},
  booktitle =	{36th International Symposium on Distributed Computing (DISC 2022)},
  pages =	{51:1--51:3},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-255-6},
  ISSN =	{1868-8969},
  year =	{2022},
  volume =	{246},
  editor =	{Scheideler, Christian},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/opus/volltexte/2022/17242},
  URN =		{urn:nbn:de:0030-drops-172423},
  doi =		{10.4230/LIPIcs.DISC.2022.51},
  annote =	{Keywords: Foraging, self-organized particle systems, compression, phase changes}
}

Keywords: Foraging, self-organized particle systems, compression, phase changes
Collection: 36th International Symposium on Distributed Computing (DISC 2022)
Issue Date: 2022
Date of publication: 17.10.2022

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