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Record W7000482081

Exploitation du contenu visuel pour améliorer la recherche textuelle d’images en lignes

2010· article· fr· W7000482081 on OpenAlexvenueno aff

Bibliographic record

VenueNPARC · 2010
Typearticle
Languagefr
FieldComputer Science
TopicImage Retrieval and Classification Techniques
Canadian institutionsnot available
Fundersnot available
KeywordsGeneral interestAgrégationResearch methodology
DOInot available

Abstract

fetched live from OpenAlex

Les moteurs de recherche d’images sur le web utilisent principalement l’information textuelle associée aux images afin de retrouver les images pertinentes, tandis que le contenu visuel, moins sémantique et plus coûteux en temps de calcul, est très peu utilisé dans la phase "en ligne". Nous proposons une chaîne de traitements complète proposant deux façons efficaces et peu coûteuses d’utiliser le contenu visuel des images dans la phase en ligne. La première façon propose d’améliorer la précision des résultats retrouvés en filtrant les résultats textuels en fonction des concepts visuels détectés dans la requête textuelle. Pour cela, nous apprenons les concepts visuels à l’aide de forêts d’arbres de décision flous. Ce travail montre une nette amélioration des résultats lorsque l’on utilise les concepts apparaissant explicitement dans la requête. La deuxième façon propose d’améliorer la diversité des résultats pertinents obtenus afin de mieux satisfaire le besoin d’information de l’utilisateur. Pour cela, nous utilisons un partitionnement de l’espace visuel. Nous montrons que cette approche est effectivement efficace.

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)0.009
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: Empirical · Consensus signal: none
Teacher disagreement score0.010
Threshold uncertainty score0.030

Distilled classifier scores by category (both heads)

CategoryCodexGemma
Metaresearch0.0020.009
Meta-epidemiology (narrow)0.0020.001
Meta-epidemiology (broad)0.0010.001
Bibliometrics0.0030.002
Science and technology studies0.0010.001
Scholarly communication0.0040.005
Open science0.0010.002
Research integrity0.0020.002
Insufficient payload (model declined to judge)0.0090.004

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 head0.112
GPT teacher head0.340
Teacher spread0.229 · 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
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".

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Citations0
Published2010
Admission routes1
Has abstractyes

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Same venueNPARCSame topicImage Retrieval and Classification TechniquesFrench-language works237,207