Parsimonious skew mixture models for model-based clustering and classification

Robust mixture modeling approaches using skewed distributions have recently been explored to accommodate asymmetric data. Parsimonious skew- t and skew-normal analogues of the GPCM family that employ an eigenvalue decomposition of a scale matrix are introduced. The methods are compared to existing models in both unsupervised and semi-supervised classification frameworks. Parameter estimation is carried out using the expectation-maximization algorithm and models are selected using the Bayesian information criterion. The efficacy of these extensions is illustrated on simulated and real data sets.

• Publication year

  2013

• Venue

  Computational Statistics & Data Analysis

• Publication date

  2013-02-10

• Fields of study

  Mathematics, Computer Science

• Identifiers
  DOI 10.1016/j.csda.2013.07.008arXiv 1302.2373
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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