Functions to prepare rankings data and fit the Plackett-Luce model jointly attributed to Plackett (1975) <doi:10.2307/2346567> and Luce (1959, ISBN:0486441369). The standard Plackett-Luce model is generalized to accommodate ties of any order in the ranking. Partial rankings, in which only a subset of items are ranked in each ranking, are also accommodated in the implementation. Disconnected/weakly connected networks implied by the rankings may be handled by adding pseudo-rankings with a hypothetical item. Optionally, a multivariate normal prior may be set on the log-worth parameters and ranker reliabilities may be incorporated as proposed by Raman and Joachims (2014) <doi:10.1145/2623330.2623654>. Maximum a posteriori estimation is used when priors are set. Methods are provided to estimate standard errors or quasi-standard errors for inference as well as to fit Plackett-Luce trees. See the package website or vignette for further details.
| Version: | 0.4.4 |
| Depends: | R (≥ 2.10) |
| Imports: | CVXR,igraph,Matrix,matrixStats, methods,partykit,psychotools,psychotree,R6,RSpectra,qvcalc,sandwich, stats |
| Suggests: | BiocStyle,BayesMallows,BradleyTerry2,PLMIX,ROlogit,StatRank,bookdown,covr,hyper2,kableExtra,knitr,lbfgs,gnm,pmr,prefmod,rmarkdown,survival,testthat |
| Published: | 2025-09-03 |
| DOI: | 10.32614/CRAN.package.PlackettLuce |
| Author: | Heather Turner [aut, cre], Ioannis Kosmidis [aut], David Firth [aut], Jacob van Etten [ctb] |
| Maintainer: | Heather Turner <ht at heatherturner.net> |
| BugReports: | https://github.com/hturner/PlackettLuce/issues |
| License: | GPL-3 |
| URL: | https://hturner.github.io/PlackettLuce/,https://github.com/hturner/PlackettLuce |
| NeedsCompilation: | no |
| Language: | en-GB |
| Citation: | PlackettLuce citation info |
| Materials: | README,NEWS |
| CRAN checks: | PlackettLuce results |