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A Finite Multi-Dimensional Generalized Gamma Mixture Model

2018· article· en· W2948668635 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
Languageen
FieldComputer Science
TopicBayesian Methods and Mixture Models
Canadian institutionsConcordia University
Fundersnot available
KeywordsMixture modelExpectation–maximization algorithmComputer scienceCluster analysisData modelingStatistical modelPattern recognition (psychology)Artificial intelligenceAlgorithmData setSet (abstract data type)Synthetic dataMathematicsMaximum likelihoodStatistics

Abstract

fetched live from OpenAlex

Over the last two decades, statistical mixture models have been widely exploited to tackle the issue of data modeling. Examples of statistical mixture models' applications in data modeling include object recognition, speech recognition, information retrieval, and intrusion detection. In this paper, an unsupervised learning algorithm, based on a finite multi-dimensional generalized Gamma mixture model (GGMM) is presented for the purpose of positive vectors clustering. Maximum likelihood (ML) is a well-known method conducted via expectation maximization algorithm (EM) and used for estimating the parameters of the proposed model. Newton Raphson's optimization algorithm was also utilized to solve the problem (obstacle) of the non-existence of closed form. Experiments are conducted using both synthetic data and a real data set of images representing shapes to test the performance of the proposed model. Moreover, we compared the performance of the generalized Gamma mixture model with Gamma and Gaussian mixture models.

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: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Methods · Consensus signal: Methods
Teacher disagreement score0.937
Threshold uncertainty score0.535

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.000
Science and technology studies0.0000.000
Scholarly communication0.0000.000
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 head0.038
GPT teacher head0.296
Teacher spread0.258 · 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

Citations4
Published2018
Admission routes1
Has abstractyes

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