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: |
0.2-9 |
| Depends: |
R (≥ 2.10) |
| Imports: |
Matrix, igraph, methods, partykit, psychotools, psychotree, RSpectra, qvcalc, sandwich, stats |
| Suggests: |
BiocStyle, BayesMallows, BradleyTerry2, BradleyTerryScalable, Matrix.utils, PLMIX, ROlogit, StatRank, covr, hyper2, kableExtra, knitr, lbfgs, gnm, pmr, rmarkdown, testthat |
| Published: |
2019-09-16 |
| 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/ |
| NeedsCompilation: |
no |
| Language: |
en-GB |
| Materials: |
README NEWS |
| CRAN checks: |
PlackettLuce results |