I have recently uploaded a new package to CRAN called eba, which stands for elimination-by-aspects models.
It allows for fitting and testing probabilistic choice models, especially the BTL model (Bradley & Terry, 1952; Luce, 1959), elimination-by-aspects (EBA) models (Tversky, 1972), and preference tree (Pretree) models (Tversky & Sattath, 1979). I believe that the functions in this package can be useful in many fields, like marketing, consumer research, psychological scaling, and food testing, to name only a few. Detailed information about probabilistic choice models and how to fit them can be found in a recent publication: Wickelmaier, F. & Schmid, C. (2004). A Matlab function to estimate choice model parameters from paired-comparison data. Behavior Research Methods, Instruments, and Computers, 36(1), 29-40. I would be glad to receive some feedback or comments. --------------------------------------------------------------- Florian Wickelmaier Dipl.-Psych., Research Assistant office: B5-209 Department of Acoustics phone: (+45) 9635 8720 Fredrik Bajers Vej 7 B5 fax: (+45) 9815 2144 DK-9220 Aalborg East e-mail: [EMAIL PROTECTED] _______________________________________________ R-packages mailing list [EMAIL PROTECTED] https://stat.ethz.ch/mailman/listinfo/r-packages ______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
