Bradley-Terry Models in R: The BradleyTerry2 Package. 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.
References in zbMATH (referenced in 3 articles )
Showing results 1 to 3 of 3.
- Jones, Ian; Inglis, Matthew: The problem of assessing problem solving: can comparative judgement help? (2015) MathEduc
- Kateri, Maria: Contingency table analysis. Methods and implementation using R (2014)
- Masarotto, Guido; Varin, Cristiano: The ranking lasso and its application to sport tournaments (2012)