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Record W1724273493

Analyse automatique de donnees par support vector machines non supervises

2012· article· fr· W1724273493 on OpenAlex

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

Venuenot available
Typearticle
Languagefr
FieldComputer Science
TopicAdvanced Clustering Algorithms Research
Canadian institutionsUniversité de Sherbrooke
Fundersnot available
KeywordsHumanitiesSupport vector machineComputer scienceArtificial intelligencePhilosophy
DOInot available

Abstract

fetched live from OpenAlex

Cette dissertation presente un ensemble d'algorithmes visant a en permettre un usage rapide, robuste et automatique des « Support Vector Machines » (SVM) non supervises dans un contexte d'analyse de donnees. Les SVM non supervises se declinent sous deux types algorithmes prometteurs, le « Support Vector Clustering » (SVC) et le « Support Vector Domain Description » (SVDD), offrant respectivement une solution a deux problemes importants en analyse de donnees, soit la recherche de groupements homogenes (« clustering »), ainsi que la reconnaissance d'elements atypiques (« novelty/abnomaly detection ») a partir d'un ensemble de donnees. Cette recherche propose des solutions concretes a trois limitations fondamentales inherentes a ces deux algorithmes, notamment 1) l'absence d'algorithme d'optimisation efficace permettant d'executer la phase d'entrainement des SVDD et SVC sur des ensembles de donnees volumineux dans un delai acceptable, 2) le manque d'efficacite et de robustesse des algorithmes existants de partitionnement des donnees pour SVC, ainsi que 3) l'absence de strategies de selection automatique des hyperparametres pour SVDD et SVC controlant la complexite et la tolerance au bruit des modeles generes. La resolution individuelle des trois limitations mentionnees precedemment constitue les trois axes principaux de cette these doctorale, chacun faisant l'objet d'un article scientifique proposant des strategies et algorithmes permettant un usage rapide, robuste et exempt de parametres d'entree des SVDD et SVC sur des ensembles de donnees arbitraires.

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)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow), Insufficient payload (model declined to judge)
Consensus categoriesInsufficient payload (model declined to judge)
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Methods · Consensus signal: none
Teacher disagreement score0.819
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0000.003
Open science0.0010.001
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0020.001

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 head0.036
GPT teacher head0.334
Teacher spread0.299 · 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

Quick stats

Citations0
Published2012
Admission routes1
Has abstractyes

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