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Beta-CoRM: A Bayesian approach for n-gram profiles analysis

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  • Perusquía, José A.
  • Griffin, Jim E.
  • Villa, Cristiano

Abstract

n-gram profiles have been successfully and widely used to analyse long sequences of potentially differing lengths for clustering or classification. Mainly, machine learning algorithms have been used for this purpose but, despite their predictive performance, these methods cannot discover hidden structures or provide a full probabilistic representation of the data. A novel class of Bayesian generative models designed for n-gram profiles used as binary attributes have been designed to address this. The flexibility of the proposed modelling allows to consider a straightforward approach to feature selection in the generative model. Furthermore, a slice sampling algorithm is derived for a fast inferential procedure, which is applied to synthetic and real data scenarios and shows that feature selection can improve classification accuracy.

Suggested Citation

  • Perusquía, José A. & Griffin, Jim E. & Villa, Cristiano, 2025. "Beta-CoRM: A Bayesian approach for n-gram profiles analysis," Computational Statistics & Data Analysis, Elsevier, vol. 202(C).
    • Handle: RePEc:eee:csdana:v:202:y:2025:i:c:s0167947324001403
    DOI: 10.1016/j.csda.2024.108056
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    References listed on IDEAS

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