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P. McNicholas

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#machine learning Preprint Oct 2024

FastManly: An EM-Gradient Algorithm for Manly Mixture Models

A faster implementation of mixtures of Manly transformations is proposed, which uses Newton's method for optimization in an EM gradient algorithm instead of Nelder-Mead in a traditional EM.

Katharine M. Clark, P. McNicholas · 0 citations
#machine learning Preprint Sep 2026

Automatic depth-based local center clustering via $\beta$-integrated local depth and adaptive grouping

Clustering is an unsupervised learning technique that partitions unlabeled data into groups. Most existing methods require user-specified parameters, such as the number of clusters or neighborhood size. Conversely, we propose automatic depth-based local center clustering (A-DLCC), a fully data-driven method that elimin...

Si-Yi Wang, Alexandre Leblanc, P. McNicholas · 0 citations

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