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Distributed computation of exact average degree and network size in finite time under quantized communication
KTH, School of Electrical Engineering and Computer Science (EECS), Intelligent systems, Decision and Control Systems (Automatic Control).ORCID iD: 0000-0002-8737-1984
Univ Cyprus, Dept Elect & Comp Engn, CY-1678 Nicosia, Cyprus..
Univ Cyprus, Dept Elect & Comp Engn, CY-1678 Nicosia, Cyprus..
KTH, School of Electrical Engineering and Computer Science (EECS), Intelligent systems, Decision and Control Systems (Automatic Control).ORCID iD: 0000-0001-9940-5929
2023 (English)In: European Journal of Control, ISSN 0947-3580, E-ISSN 1435-5671, Vol. 74, article id 100848Article in journal (Refereed) Published
Abstract [en]

We consider the problems of computing the average degree and the size of a given network in a distributed fashion and under quantized communication. More specifically, we present two distributed algorithms, which rely on quantized operation (i.e., nodes process and transmit quantized messages) and are able to obtain the exact solutions in a finite number of steps. During the operation of our algorithms, each node can determine in a distributed manner whether convergence has been achieved and correspondingly terminate its operation. For terminating the operation of our algorithms, we assume a known bound for the network diameter. To the best of the authors' knowledge, these algorithms are the first to find exact solutions (i.e., with no error in the final result) under quantized communication. Note that our network size calculation algorithm is the first in the literature to calculate the exact size of a network in a finite number of steps without introducing a final error; in other algorithms, this error can be either due to quantization or asymptotic convergence. In our case, no error is introduced since the desired result is calculated in the form of a fraction involving an integer numerator and an integer denominator. We demonstrate the operation of our algorithms and their potential advantages through simulations.

Place, publisher, year, edition, pages
Elsevier BV , 2023. Vol. 74, article id 100848
Keywords [en]
Distributed networks, Quantized communication, Size estimation, Averge degree calculation, Leader election, Finite time, Markov chains
National Category
Control Engineering Communication Systems
Identifiers
URN: urn:nbn:se:kth:diva-340894DOI: 10.1016/j.ejcon.2023.100848ISI: 001111494100001Scopus ID: 2-s2.0-85164737981OAI: oai:DiVA.org:kth-340894DiVA, id: diva2:1819920
Note

QC 20231215

Available from: 2023-12-15 Created: 2023-12-15 Last updated: 2023-12-15Bibliographically approved

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Rikos, ApostolosJohansson, Karl H.

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