On-device research index

arXiv research

A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.

168,657 papers · 148 categories

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3 results for “Overspecification”

Overspecified Mixture Discriminant Analysis: Exponential Convergence, Statistical Guarantees, and Remote Sensing Applicationsstat.ML

Study shows MDA's effectiveness even when more components are assumed than in actual data.

problem Classification error in overspecified Mixture Discriminant Analysis.

method Two-component Gaussian mixture model, EM algorithm, theoretical analysis of convergence and error rates.

result EM algorithm converges exponentially fast to Bayes risk with suitable initialization.

Mixture Discriminant Analysis Overspecification Expectation-Maximization Exponential Convergence Statistical Guarantees

2025-10-30abs ↗pdf ↗

Estimating the Number of Components in Finite Mixture Models via Variational Approximationstat.ME

New method selects FMM components via variational Bayes.

problem Selecting the correct number of components in finite mixture models.

method Variational Bayes with mean-field approximation.

result Consistency of model selection based on ELBO maximization.

finite mixture models variational Bayes ELBO model selection component selection

2024-04-25abs ↗pdf ↗

Learning Overspecified Gaussian Mixtures Exponentially Fast with the EM Algorithmstat.ML

EM algorithm converges exponentially fast for overspecified Gaussian mixtures.

problem Convergence of EM algorithm in overspecified Gaussian mixtures.

method Structured configuration of means and weights, strong convexity, Polyak-Łojasiewicz inequality, finite-sample analysis.

result Exponential convergence rate of EM algorithm in KL distance.

EM algorithm Gaussian mixtures overspecification exponential convergence Kullback-Leibler distance

2025-06-13abs ↗pdf ↗