Bradley-Terry Models in R

David Firth

Journal of Statistical Software, 2005, vol. 012, issue i01

Abstract: This paper describes the R add-on package BradleyTerry, which facilitates the specification and fitting of Bradley-Terry logit models to pair-comparison data. Included are the standard "unstructured" Bradley-Terry model, structured versions in which the parameters are related through a linear predictor to explanatory variables, and the possibility of an order or "home advantage" effect. Model fitting is either by maximum likelihood or by bias-reduced maximum likelihood in which the first-order asymptotic bias of parameter estimates is eliminated. Also provided are a simple and efficient approach to handling missing covariate data, and suitably-defined residuals for diagnostic checking of the linear predictor; these are new methodological contributions which will be discussed in greater detail elsewhere.

Date: 2005-01-07
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Citations: View citations in EconPapers (9)

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Persistent link: https://EconPapers.repec.org/RePEc:jss:jstsof:v:012:i01

DOI: 10.18637/jss.v012.i01

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