RD Baker
An empirical Bayes model for time-varying paired comparisons ratings : who is the greatest women’s tennis player?
Baker, RD; McHale, IG
Authors
IG McHale
Abstract
We present a methodology for fitting a time-varying paired comparisons model using an empirical Bayes approach. The model simultaneously avoids two problems that typically arise with paired comparisons data: first, that extreme values of estimated strengths can occur for competitors appearing in and winning a small number of games, producing absurd rankings, and second, that the time-varying strengths ‘balloon’ over time. The empirical Bayes approach automatically shrinks the strength estimates towards the mean, thus avoiding both issues. We present our model and demonstrate its use in the setting of tennis in search of an answer to the question: who is the greatest women’s player of all time. Our results suggest that Steffi Graf is a strong candidate, but, using confidence intervals on the rankings themselves, others cannot be ruled out.
Citation
Baker, R., & McHale, I. (2017). An empirical Bayes model for time-varying paired comparisons ratings : who is the greatest women’s tennis player?. European Journal of Operational Research, 258(1), 328-333. https://doi.org/10.1016/j.ejor.2016.08.043
Journal Article Type | Article |
---|---|
Acceptance Date | Aug 17, 2016 |
Online Publication Date | Aug 24, 2016 |
Publication Date | Apr 1, 2017 |
Deposit Date | Nov 10, 2016 |
Publicly Available Date | Aug 24, 2018 |
Journal | European Journal of Operational Research |
Print ISSN | 0377-2217 |
Publisher | Elsevier |
Volume | 258 |
Issue | 1 |
Pages | 328-333 |
DOI | https://doi.org/10.1016/j.ejor.2016.08.043 |
Publisher URL | http://dx.doi.org/10.1016/j.ejor.2016.08.043 |
Related Public URLs | http://www.sciencedirect.com/science/article/pii/S0377221716306828 |
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Licence
http://creativecommons.org/licenses/by-nc-nd/4.0/
Publisher Licence URL
http://creativecommons.org/licenses/by-nc-nd/4.0/
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