EloRating-package: Animal Dominance Hierarchies by Elo Rating
In EloRating: Animal Dominance Hierarchies by Elo Rating

Description Author(s) References Examples

Provides functions to quantify animal dominance hierarchies. The major focus is on Elo rating and its ability to deal with temporal dynamics in dominance interaction sequences. For static data, David's score and de Vries' I&SI are also implemented. In addition, the package provides functions to assess transitivity, linearity and stability of dominance networks. See Neumann et al (2011) <doi:10.1016/j.anbehav.2011.07.016> for an introduction.

Christof Neumann [aut, cre] (<https://orcid.org/0000-0002-0236-1219>), Lars Kulik [aut]

Maintainer: Christof Neumann <christofneumann1@gmail.com>

Elo, A. E. 1978. The Rating of Chess Players, Past and Present. New York: Arco.

Albers, P. C. H. & de Vries, H. 2001. Elo-rating as a tool in the sequential estimation of dominance strengths. Animal Behaviour, 61, 489-495. (DOI: 10.1006/anbe.2000.1571)

Neumann, C., Duboscq, J., Dubuc, C., Ginting, A., Irwan, A. M., Agil, M., Widdig, A. & Engelhardt, A. 2011. Assessing dominance hierarchies: validation and advantages of progressive evaluation with Elo-rating. Animal Behaviour, 82, 911-921. (DOI: 10.1016/j.anbehav.2011.07.016)

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data(adv)
SEQ <- elo.seq(winner=adv$winner, loser=adv$loser, Date=adv$Date)
summary(SEQ)

Loading required package: zoo

Attaching package: 'zoo'

The following objects are masked from 'package:base':

    as.Date, as.Date.numeric

[1] "loop 1: Elo calculations"

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[1] "loop 2: Stability calculations"

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Elo ratings from 7 individuals
total (mean/median) number of interactions: 33 (9.4/9)
range of interactions: 7 - 11 
date range: 2010-01-01 - 2010-02-02 
startvalue: 1000 
uppon arrival treatment: average 
k: 100 
proportion of draws in the data set: 0