Search Results for author: Keefe Murphy

Found 5 papers, 5 papers with code

GP-BART: a novel Bayesian additive regression trees approach using Gaussian processes

1 code implementation5 Apr 2022 Mateus Maia, Keefe Murphy, Andrew C. Parnell

The Bayesian additive regression trees (BART) model is an ensemble method extensively and successfully used in regression tasks due to its consistently strong predictive performance and its ability to quantify uncertainty.

Gaussian Processes regression

Clustering Longitudinal Life-Course Sequences Using Mixtures of Exponential-Distance Models

1 code implementation21 Aug 2019 Keefe Murphy, Thomas Brendan Murphy, Raffaella Piccarreta, Isobel Claire Gormley

Here, we analyse a survey data set containing information on the career trajectories of a cohort of Northern Irish youths tracked between the ages of 16 and 22.

Methodology Applications

Gaussian Parsimonious Clustering Models with Covariates and a Noise Component

2 code implementations15 Nov 2017 Keefe Murphy, Thomas Brendan Murphy

We consider model-based clustering methods for continuous, correlated data that account for external information available in the presence of mixed-type fixed covariates by proposing the MoEClust suite of models.

Methodology

Infinite Mixtures of Infinite Factor Analysers

1 code implementation24 Jan 2017 Keefe Murphy, Isobel Claire Gormley, Cinzia Viroli

Factor-analytic Gaussian mixture models are often employed as a model-based approach to clustering high-dimensional data.

Methodology

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