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Bradley-Terry models in R : the BradleyTerry2 package

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Firth, David and Turner, Heather L.. (2012) Bradley-Terry models in R : the BradleyTerry2 package. Journal of Statistical Software, Volume 48 (Number 9). ISSN 1548-7660

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Abstract

This is a short overview of the R add-on package BradleyTerry2, which facilitates the specification and fitting of Bradley-Terry logit, probit or cauchit 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 or other 'contest-specific' effects. Model fitting is either by maximum likelihood, by penalized quasi-likelihood (for models which involve a random effect), 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.

Item Type:

Journal Article

Subjects:

Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software

Divisions:

Faculty of Science > Statistics

Library of Congress Subject Headings (LCSH):

R (Computer program language), Paired comparisons (Statistics) -- Computer programs, Linear models (Statistics) -- Computer programs

Journal or Publication Title:

Journal of Statistical Software

Publisher:

American Statistical Association

ISSN:

1548-7660

Official Date:

May 2012

Dates:

Date	Event
May 2012	Published

Volume:

Volume 48

Number:

Number 9

Status:

Peer Reviewed

Publication Status:

Published

Access rights to Published version:

Restricted or Subscription Access

Funder:

Engineering and Physical Sciences Research Council (EPSRC)

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