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prefmod  

Utilities to Fit Paired Comparison Models for Preferences
View on CRAN: Click here


Download and install prefmod package within the R console
Install from CRAN:
install.packages("prefmod")

Install from Github:
library("remotes")
install_github("cran/prefmod")

Install by package version:
library("remotes")
install_version("prefmod", "0.8-37")



Attach the package and use:
library("prefmod")
Maintained by
Marco Johannes Maier
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2008-12-12
Latest Update: 2025-09-03
Description:
Generates design matrix for analysing real paired comparisons and derived paired comparison data (Likert type items/ratings or rankings) using a loglinear approach. Fits loglinear Bradley-Terry model (LLBT) exploiting an eliminate feature. Computes pattern models for paired comparisons, rankings, and ratings. Some treatment of missing values (MCAR and MNAR). Fits latent class (mixture) models for paired comparison, rating and ranking patterns using a non-parametric ML approach.
How to cite:
Marco Johannes Maier (2008). prefmod: Utilities to Fit Paired Comparison Models for Preferences. R package version 0.8-37, https://cran.r-project.org/web/packages/prefmod. Accessed 18 Sep. 2026.
Previous versions and publish date:
(2026-07-09 06:43), 0.8-13 (2008-12-12 09:12), 0.8-14 (2009-04-16 12:30), 0.8-15 (2009-06-02 19:31), 0.8-16 (2009-06-14 21:35), 0.8-18 (2010-01-22 08:15), 0.8-19 (2010-02-23 08:58), 0.8-20 (2010-04-23 10:56), 0.8-21 (2010-06-28 16:41), 0.8-22 (2011-01-11 07:59), 0.8-24 (2011-03-29 16:33), 0.8-25 (2011-03-31 18:58), 0.8-27 (2011-09-25 09:57), 0.8-29 (2012-02-16 09:31), 0.8-31 (2012-05-14 18:22), 0.8-32 (2014-05-20 10:06), 0.8-33 (2015-11-12 19:12), 0.8-34 (2017-09-18 15:27), 0.8-35 (2022-06-14 10:07), 0.8-36 (2023-09-30 18:50)
Other packages that cited prefmod R package
View prefmod citation profile
Other R packages that prefmod depends, imports, suggests or enhances
Complete documentation for prefmod
Functions, R codes and Examples using the prefmod R package
Some associated functions: baseball . carconf . cemspc . checkMIS . dat4 . euro55.2.des . expand.mat . immig . issp2000 . llbt.design . llbt.fit . llbt.worth . llbtPC.fit . music . patt.design . patt.worth . pattL.fit . pattLrep.fit . pattPC.fit . pattR.fit . pattRrep.fit . pattnpml.fit . plot.wmat . prefmod-defunct . prefmod-package . print.pattMod . salad . simPC . summary.pattNPML . tennis . trdel . xmpl . 
Some associated R codes: Lpatternmat.R . NIblcontrib.R . NIgroupscontrib.R . Rpatternmat.R . aggreg.R . aggreg2.R . aggreg3.R . aggregR.R . all_patterns.R . alldistPC.R . bin2int.R . blcontrib.R . checkMIS.R . compnames.R . convert2strings.R . countpattern.R . countpattern2.R . countpattern3.R . covdesign.R . covpart.R . covpart2.R . covpart3.R . covpartR.R . dependencies.R . designkernel.R . differences.R . diffsred.R . expand.mat.R . gen.partsList.R . gen.partsList2.R . gen.partsList3.R . gen.partsListR.R . generateLpatterns.R . generatePCpatterns.R . generateRpatterns.R . genintdesign.R . gfac2.R . groupscontrib.R . init.R . int2tern.R . llbt.design.R . llbt.fit.R . llbt.worth.R . llbtPC.fit.R . log2int.R . loglik.R . loglikPC.R . normalize.R . npml.parts.R . objdesign.R . p2string.R . patt.design.R . patt.worth.R . pattL.fit.R . pattLrep.fit.R . pattPC.fit.R . pattR.fit.R . pattRrep.fit.R . patternmat2.R . patternmat3.R . pattnpml.fit.R . pcdesign.R . perm.R . permutations.R . plot.wmat.R . plotworth.R . print.pattMod.R . red.cat.R . red.cat.agg.R . simPC.R . simR.R . splitCovs.R . splitData.R . splitData2.R . splitData3.R . splitDataR.R . tern2int.R . writeGLIMcmds.R .  Full prefmod package functions and examples
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