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Record W7017275748

Application de l'algorithme EM au modèle des risques concurrents avec causes de panne masquées

2005· other· fr· W7017275748 on OpenAlexvenueno aff

Bibliographic record

VenueLibrary and Archives Canada (Government of Canada) · 2005
Typeother
Languagefr
Field
Topic
Canadian institutionsnot available
Fundersnot available
KeywordsNucleofectionGestational periodTSG101DysgeusiaArticular cartilage damageHyporeflexia
DOInot available

Abstract

fetched live from OpenAlex

Dans un modèle de durées de vie avec des risques concurrents, les systèmes peuvent\ntomber en panne dans le temps. Ces pannes sont dues à une cause parmi plusieurs\npossibles et il arrive parfois que celle-ci soit inconnue. C'est alors qu'on peut faire appel\nà l'algorithme EM pour calculer les estimateurs du maximum de vraisemblance. Cette\ntechnique utilise la fonction de vraisemblance des données complètes pour trouver les\nestimateurs même si les données observées sont incomplètes.\nPour les systèmes ayant leur cause de panne inconnue, on peut en prendre un\néchantillon pour une inspection plus approfondie qui dévoilera les vraies causes de\npanne. Cette étape peut améliorer l'estimation des probabilités de masque et des fonc-\ntions de risque spécifiques aux causes de panne. Après avoir expliqué la théorie de\nl'algorithme EM, le modèle des risques concurrents, ainsi que les travaux réalisés sur le\nsujet, on étudie l'impact qu'a sur les estimateurs le fait de ne pas envoyer un échantillon\ndes systèmes masqués à un examen approfondi qui permettrait de trouver la vraie cause\nde panne.

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: Simulation or modeling · Consensus signal: Simulation or modeling
GenreCandidate signal: Methods · Consensus signal: Methods
Teacher disagreement score0.011
Threshold uncertainty score0.022

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0020.008
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.002
Bibliometrics0.0010.001
Science and technology studies0.0010.001
Scholarly communication0.0020.002
Open science0.0020.002
Research integrity0.0020.001
Insufficient payload (model declined to judge)0.0050.001

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 head0.004
GPT teacher head0.165
Teacher spread0.161 · 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
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

Citations0
Published2005
Admission routes1
Has abstractyes

Explore more

Same venueLibrary and Archives Canada (Government of Canada)→French-language works237,207→