activity
20132020
most citedDesign choices for productive, secure, data-intensive research at scale in the cloud

7 citations · 19 across the 5 of their papers we have counts for

collaborators

5 papers

stat.ML2020★ 7 cited

Model updating after interventions paradoxically introduces bias

James Liley, Samuel R Emerson, Bilal A Mateen +3

Machine learning is increasingly being used to generate prediction models for use in a number of real-world settings, from credit risk assessment to clinical decision support. Rece…

cs.CR2019★ 7 cited

Design choices for productive, secure, data-intensive research at scale in the cloud

Diego Arenas, Jon Atkins, Claire Austin +22

We present a policy and process framework for secure environments for productive data science research projects at scale, by combining prevailing data security threat and risk prof…

stat.ME2018★ 2 cited

Shrinkage estimation of large covariance matrices using multiple shrinkage targets

Harry Gray, Gwenaël G. R. Leday, Catalina A. Vallejos +1

Linear shrinkage estimators of a covariance matrix --- defined by a weighted average of the sample covariance matrix and a pre-specified shrinkage target matrix --- are popular whe…

stat.AP2014

Bayesian Survival Modelling of University Outcomes

Catalina A. Vallejos, Mark F. J. Steel

The aim of this paper is to model the length of registration at university and its associated academic outcome for undergraduate students at the Pontificia Universidad Católica de…

stat.ME2013★ 3 cited

On posterior propriety for the Student- linear regression model under Jeffreys priors

Catalina A. Vallejos, Mark F. J. Steel

Regression models with fat-tailed error terms are an increasingly popular choice to obtain more robust inference to the presence of outlying observations. This article focuses on B…