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arXiv · 2310.05288

Clustering Three-Way Data with Outliers

Katharine M. Clark·Paul D. McNicholas
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Abstract

Matrix-variate distributions are a relatively recent addition to the model-based clustering literature, thereby making it possible to analyze data in matrix form with complex structure such as images and time series. Due to its recent appearance, there is limited literature on matrix-variate data, with even less on dealing with outliers in these models. An approach for clustering matrix-variate normal data with outliers is discussed. The approach, which uses the distribution of subset log-likelihoods, extends the OCLUST algorithm to matrix-variate normal data and uses an iterative approach to detect and trim outliers.

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Katharine M. Clark, Paul D. McNicholas. 2026-09-01. Clustering Three-Way Data with Outliers. https://arxiv.org/abs/2310.05288

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