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Variational Inference of Finite Asymmetric Gaussian Mixture Models

2019· article· en· W3008588871 on OpenAlex
Ziyang Song, Ornela Bregu, Samr Ali, Nizar Bouguila

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
Languageen
FieldComputer Science
TopicBayesian Methods and Mixture Models
Canadian institutionsConcordia University
Fundersnot available
KeywordsMixture modelInferenceGaussianComputer scienceArtificial intelligenceBayes' theoremGaussian processMachine learningHomogeneousAlgorithmPattern recognition (psychology)MathematicsBayesian probability

Abstract

fetched live from OpenAlex

Mixture models are a popular unsupervised learning technique useful for discovering homogeneous clusters in unlabeled data. A key research problem lies in the accurate and efficient determination of their associated parameters. Variational inference has recently risen as a prominent parameter learning approach. Hence, in this research, we propose a variational Bayes learning framework for asymmetric Gaussian mixture model. Unlike Gaussian mixture models, these models incorporate the asymmetric shape of data and are adaptive to different conditions in real-word image processing domains. Experimental results show the merit of the proposed approach.

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)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Theoretical or conceptual · Consensus signal: none
GenreCandidate signal: Methods · Consensus signal: Methods
Teacher disagreement score0.621
Threshold uncertainty score0.386

Codex and Gemma teacher scores by category

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

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 head0.019
GPT teacher head0.264
Teacher spread0.244 · 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

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Citations1
Published2019
Admission routes1
Has abstractyes

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