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Record W121933743

Area-Proportional Drawings of Intersecting Families of Simple Closed Curves.

2005· article· en· W121933743 on OpenAlex
Stirling Chow, Frank Ruskey

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueCanadian Conference on Computational Geometry · 2005
Typearticle
Languageen
FieldComputer Science
TopicComputational Geometry and Mesh Generation
Canadian institutionsUniversity of Victoria
Fundersnot available
KeywordsJordan curve theoremMathematicsCombinatoricsPlane curveSimple (philosophy)GraphPlane (geometry)Geometry
DOInot available

Abstract

fetched live from OpenAlex

A FISC, or family of intersecting simple closed curves, is a collection of simple closed curves in the plane with the properties that there is some open region common to the interiors of all the curves, and that every two curves intersect in finitely many points or arcs. Let F be a FISC with a set of open regions R. F is said to be area-proportional with respect to weight function ω : R → R if there is a positive constant α such that for any two finite regions, r1 and r2, area(r1)/area(r2) = αω(r1)/ω(r2). We consider F as a directed plane graph, ~ G(F), where the curve intersections are vertices and the curve arcs between vertices are edges. Edges are directed so that each of F ’s curves is traversed in a clockwise fashion. The directed plane dual of ~ G(F), denoted ~ D(F), has edges oriented to indicate inclusion in fewer interiors of the curves. The graph ~ G(F) has an area-proportional drawing with respect to ω if there is some FISC C that is area-proportional to ω and where F can be transformed into C by a continuous transformation of the plane. We describe an O(n|V |) algorithm for creating an area-proportional drawing of ~ G(F) = (V,E) where F is a FISC with n curves and ~ D(F) has only one source and only one sink. For the case of n-Venn diagrams, since |V | ≤ 2 − 2, this yields an O(|V |lg|V |) drawing algorithm.

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.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.546
Threshold uncertainty score0.837

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0010.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

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 head0.029
GPT teacher head0.256
Teacher spread0.228 · 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