qdm: Fitting a Quadrilateral Dissimilarity Model to Same-Different Judgments

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This package provides different specifications of a Quadrilateral Dissimilarity Model which can be used to fit same-different judgments in order to get a predicted matrix that satisfies regular minimality [Colonius & Dzhafarov, 2006, Measurement and representations of sensations, Erlbaum]. From such a matrix, Fechnerian distances can be computed.

Author
Nora Umbach [aut, cre], Florian Wickelmaier [aut]
Date of publication
2014-10-27 15:30:23
Maintainer
Nora Umbach <nora.umbach@web.de>
License
GPL (>= 2)
Version
0.1-0

View on CRAN

Man pages

FMrate
Discrimination Judgments of Frequency-Modulated Tones
lightness
Discrimination Judgments of Gray Patches
persp.qdm
Perspective Plot for Predictions of Quadrilateral...
predict.qdm
Predictions of Quadrilateral Dissimilarity Model
qdm
Fit a Quadrilateral Dissimilarity Model
samediff
Create Discrimination Probabilities (Psi) from Data Frame

Files in this package

qdm
qdm/NAMESPACE
qdm/data
qdm/data/FMrate.txt.gz
qdm/data/lightness.txt.gz
qdm/data/datalist
qdm/R
qdm/R/samediff.R
qdm/R/qdm.R
qdm/MD5
qdm/DESCRIPTION
qdm/man
qdm/man/qdm.Rd
qdm/man/persp.qdm.Rd
qdm/man/predict.qdm.Rd
qdm/man/samediff.Rd
qdm/man/FMrate.Rd
qdm/man/lightness.Rd