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Record W1737138984

GMACE Weighting Factors

2013· article· en· W1737138984 on OpenAlexaff
P G Sullivan

Bibliographic record

VenueBulletin - International Bull Evaluation Service/Interbull bulletin · 2013
Typearticle
Languageen
FieldBiochemistry, Genetics and Molecular Biology
TopicGenetic and phenotypic traits in livestock
Canadian institutionsCanadian Dairy Commission
Fundersnot available
KeywordsWeightingStatisticsReliability (semiconductor)Variance (accounting)EconometricsA-weightingVariance componentsMathematicsComputer scienceEconomicsAccounting
DOInot available

Abstract

fetched live from OpenAlex

Statistical indicators to quantify information in national GEBV are required for optimal weighting of these GEBV as input observations for GMACE.  The weighting factors are also used when approximating reliabilities of GMACE output, the international GEBV.  The present study considered a change in approach from providing a recipe to national centers for deriving the weighting factors, to instead having Interbull apply the recipe internally and in a guaranteed consistent way for all countries.  The main impacts of this change in approach were on selected estimates of genomic variance and GMACE reliabilities, most notably for specific estimates that had previously been questioned as erroneous.  Most estimates of variance and reliability were essentially unaffected by the change in approach, because most weighting factors were only slightly different than before.  An advantage of the new approach was that weighting factors and GMACE model specifics became perfectly aligned, and thus GMACE reliabilities were aligned without exception to the national values.  All GMACE reliabilities were equal or higher than national values.  All increases in reliability with GMACE were as expected, only for bulls that had input GEBV from more than one country, and with smaller increases if the multiple GEBV were from countries that share data for national genomic predictions.

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)0.011
metaresearch head score (Gemma)0.053
Version: metacan-v3-hybrid-931329e0061cValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: none
GenreCandidate signal: Methods · Consensus signal: Methods
Teacher disagreement score0.015
Threshold uncertainty score0.059

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0110.053
Meta-epidemiology (narrow)0.0020.001
Meta-epidemiology (broad)0.0010.002
Bibliometrics0.0030.003
Science and technology studies0.0010.001
Scholarly communication0.0030.003
Open science0.0020.003
Research integrity0.0010.003
Insufficient payload (model declined to judge)0.0150.005

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 head0.020
GPT teacher head0.267
Teacher spread0.246 · 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 designBench or experimental
Domainnot available
GenreMethods

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

Citations1
Published2013
Admission routes1
Has abstractyes

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