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Record W100499361

Static symmetry breaking in circle packing

2010· article· en· W100499361 on OpenAlexaff
Alberto Costa, Pierre Hansen, Leo Liberti

Bibliographic record

VenueCologne Twente Workshop on Graphs and Combinatorial Optimization · 2010
Typearticle
Languageen
FieldEngineering
TopicOptimization and Packing Problems
Canadian institutionsHEC Montréal
Fundersnot available
KeywordsCircle packingSquare (algebra)RADIUSPacking problemsSymmetry breakingCombinatoricsUnit squareSymmetry (geometry)Unit (ring theory)MathematicsUnit circleWork (physics)PhysicsGeometryComputer scienceQuantum mechanics
DOInot available

Abstract

fetched live from OpenAlex

1 IntroductionWe present new Static Symmetry-Breaking Inequalities (SSBI) [11,6] for theproblem of packing equal circles in a square [9]. The new SSBIs provide amarked computational improvement with respect to past work [1], though notyet at the level where a purely Mathematical Programming (MP) based spatialBranch-and-Bound (sBB) can be competitive with a Branch-and-Bound (BB)“boosted” by combinatorial and geometrical devices such as [9]. We considerthe following formulation of Circle Packing in a Square (CPS) problem:given N ∈ N and L ∈ N, can N non-overlapping circles of unit radius be ar-ranged in a square of side 2L? This is equivalent to the more usual formulationwhere one maximizes the number of non-overlapping circles of unit radius in asquare of side 2L with L ∈ Q

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)0.002
metaresearch head score (Gemma)0.008
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Theoretical or conceptual · Consensus signal: Theoretical or conceptual
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.010
Threshold uncertainty score0.035

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0020.008
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0010.002
Science and technology studies0.0010.002
Scholarly communication0.0020.004
Open science0.0030.002
Research integrity0.0010.002
Insufficient payload (model declined to judge)0.0100.001

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 head0.007
GPT teacher head0.218
Teacher spread0.212 · 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 designTheoretical or conceptual
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

Citations7
Published2010
Admission routes1
Has abstractyes

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Same venueCologne Twente Workshop on Graphs and Combinatorial OptimizationSame topicOptimization and Packing ProblemsFrench-language works237,207