## Electronic Journal of Statistics

### Scalable Bayesian nonparametric measures for exploring pairwise dependence via Dirichlet Process Mixtures

#### Abstract

In this article we propose novel Bayesian nonparametric methods using Dirichlet Process Mixture (DPM) models for detecting pairwise dependence between random variables while accounting for uncertainty in the form of the underlying distributions. A key criteria is that the procedures should scale to large data sets. In this regard we find that the formal calculation of the Bayes factor for a dependent-vs.-independent DPM joint probability measure is not feasible computationally. To address this we present Bayesian diagnostic measures for characterising evidence against a “null model” of pairwise independence. In simulation studies, as well as for a real data analysis, we show that our approach provides a useful tool for the exploratory nonparametric Bayesian analysis of large multivariate data sets.

#### Article information

Source
Electron. J. Statist., Volume 10, Number 2 (2016), 3338-3354.

Dates
First available in Project Euclid: 16 November 2016

https://projecteuclid.org/euclid.ejs/1479287224

Digital Object Identifier
doi:10.1214/16-EJS1171

Mathematical Reviews number (MathSciNet)
MR3572852

Zentralblatt MATH identifier
1358.62058

#### Citation

Filippi, Sarah; Holmes, Chris C.; Nieto-Barajas, Luis E. Scalable Bayesian nonparametric measures for exploring pairwise dependence via Dirichlet Process Mixtures. Electron. J. Statist. 10 (2016), no. 2, 3338--3354. doi:10.1214/16-EJS1171. https://projecteuclid.org/euclid.ejs/1479287224

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