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Record W2030433583 · doi:10.1017/s0017089502030136

Comparison results for solutions of reaction diffusion problems

2002· article· en· W2030433583 on OpenAlexaff
Grard A. Philippin, Stella Vernier Piro

Bibliographic record

VenueGlasgow Mathematical Journal · 2002
Typearticle
Languageen
FieldMathematics
TopicNonlinear Partial Differential Equations
Canadian institutionsUniversité Laval
FundersIstituto Nazionale di Alta Matematica "Francesco Severi"
KeywordsNabla symbolMathematicsBoundary value problemDiffusionClass (philosophy)Construct (python library)Mathematical analysisPure mathematicsCombinatoricsThermodynamicsPhysicsComputer science

Abstract

fetched live from OpenAlex

In this paper we construct upper bounds for the solutions u({\bf{x}},t) and its gradient |\nabla u| of a class of parabolic initial-boundary value problems in terms of the solution \psi ({\bf{x}}) of the {\text S}^t -Venant problem. These bounds are sharp in the sense that they coincide with the exact values of u and |\nabla u| for appropriate geometry and appropriate initial conditions.

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)0.027
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: none
GenreCandidate signal: Empirical · Consensus signal: none
Teacher disagreement score0.012
Threshold uncertainty score0.054

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0100.027
Meta-epidemiology (narrow)0.0020.001
Meta-epidemiology (broad)0.0020.002
Bibliometrics0.0050.002
Science and technology studies0.0020.003
Scholarly communication0.0040.009
Open science0.0030.006
Research integrity0.0030.006
Insufficient payload (model declined to judge)0.0120.001

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 head0.183
GPT teacher head0.369
Teacher spread0.187 · 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

Citations2
Published2002
Admission routes1
Has abstractyes

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Same venueGlasgow Mathematical JournalSame topicNonlinear Partial Differential EquationsFrench-language works237,207