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(Emerald, 2010-01)Ranked preference data arise when a set of judges rank, in order of their preference, a set of objects. Such data arise in preferential voting systems and market research surveys. Covariate data associated with the judges ...
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(University College Dublin. Institute for the Study of Social Change (Geary Institute), 2003-05)Non-random item nonresponse makes identification of parameters problematic. Such nonresponse can occur with respect to both dependent and conditioning variables. A method often used to reduce nonresponse is that of adding ...
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(University College Dublin. School of Business. Centre for Financial MarketsUniversity College Dublin. Geary Institute, 2009-08)This paper examines the volatility and covariance dynamics of cash and futures contracts that underlie the Optimal Hedge Ratio (OHR) across different hedging time horizons. We examine whether hedge ratios calculated over ...
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(BioMed Central, 2010-11-23)Background: Data from metabolomic studies are typically complex and high-dimensional. Principal component analysis (PCA) is currently the most widely used statistical technique for analyzing metabolomic data. However, ...
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(University College Dublin. Geary Institute, 2010-09-17)This paper examines how attitudes to risk relate to other psychological constructs of personality and consideration of future consequences (a proxy for time preferences) and how risk attitudes relate to credit behaviour ...
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(Oxford University Press, 2010-11-01)In recent years, work has been carried out on clustering gene expression microarray data. Some approaches are developed from an algorithmic viewpoint whereas others are developed via the application of mixture models. In ...
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(University College Dublin. Geary Institute, 2007-01-31)This paper examines the results of single-equation regression models of the determinants of alcohol consumption patterns among college students modelling a rich variety of covariates including gender, family and peer ...
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(University College Dublin. School of Business. Centre for Financial MarketsUniversity College Dublin. Geary Institute, 2009-10-28)Real Estate Investment Trusts (REITs) are the only truly liquid assets related to real estate investments. We study the behavior of U.S. REITs over the past three decades and document their return characteristics. REITs ...
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(Wiley, 2010-03)A new family of mixture models for the model-based clustering of longitudinal data is introduced. The covariance structures of eight members of this new family of models are given and the associated maximum likelihood ...
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(Blackwell, 2008-01)This article examines the results of single-equation regression models of the determinants of alcohol consumption patterns among college students modeling a rich variety of covariates including gender, family and peer ...