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Record W2888337474 · doi:10.1109/tsipn.2018.2866322

Improved Bounds for Max Consensus in Wireless Networks

2018· article· en· W2888337474 on OpenAlexafffund
Aida Nowzari, Michael Rabbat

Bibliographic record

VenueIEEE Transactions on Signal and Information Processing over Networks · 2018
Typearticle
Languageen
FieldComputer Science
TopicCooperative Communication and Network Coding
Canadian institutionsMcGill University
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsConvergence (economics)Random geometric graphPairwise comparisonCombinatoricsBinary logarithmMathematicsWireless networkRandom graphGraphDiscrete mathematicsUpper and lower boundsAsynchronous communicationComputer scienceAlgorithmWirelessStatisticsLine graph

Abstract

fetched live from OpenAlex

In consensus problems, the goal is for the nodes of a network to converge to a certain quantity or a function of their values using local communications. In the maximum value consensus problem, the objective of these communications is for all the nodes to converge to the maximum of their initial values. There are two existing algorithms for the maximum value consensus problem in asynchronous networks: RANDOM-PAIRWISE-MAX and RANDOM-BROADCAST-MAX for which the bounds on the mean convergence time have been derived in the literature. In this paper, we derive tighter bounds on the expected convergence time of these two algorithms when run on grid networks and random geometric graphs, respectively-two models commonly used to capture salient properties of wireless networks. We show that RANDOM-PAIRWISE-MAX run on a 2-D grid graph with n nodes converges in expectation after O(n3/2) iterations, and RANDOM-BROADCAST-MAX run on a random geometric graph with n nodes converges in expectation after O((n/ log n)3/2) iterations. These bounds improve over the previous best-known upper bounds by factors of √n log n and log n + log2n, respectively. Experiments illustrate that the proposed bounds can be up to 95% tighter than the previous state-of-the-art bounds. Furthermore, we enhance the proposed bounds by introducing probabilistic network link failures, e.g., to model packet drops in wireless networks.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame machine prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.

metaresearch head score (Codex)0.010
metaresearch head score (Gemma)0.058
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.012
Threshold uncertainty score0.052

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0100.058
Meta-epidemiology (narrow)0.0040.001
Meta-epidemiology (broad)0.0030.002
Bibliometrics0.0040.004
Science and technology studies0.0020.004
Scholarly communication0.0040.013
Open science0.0050.007
Research integrity0.0030.010
Insufficient payload (model declined to judge)0.0120.004

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.017
GPT teacher head0.256
Teacher spread0.238 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.

The models applied no category: nothing in the taxonomy fit this work.
Study designSimulation or modeling
Domainnot available
GenreEmpirical

How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".

Quick stats

Citations9
Published2018
Admission routes2
Has abstractyes

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Same venueIEEE Transactions on Signal and Information Processing over NetworksSame topicCooperative Communication and Network CodingFrench-language works237,207