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qdm (version 0.1-0)

Fitting a Quadrilateral Dissimilarity Model to Same-Different Judgments

Description

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.

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Version

Install

install.packages('qdm')

Monthly Downloads

104

Version

0.1-0

License

GPL (>= 2)

Maintainer

Last Published

October 27th, 2014

Functions in qdm (0.1-0)

lightness

Discrimination Judgments of Gray Patches
FMrate

Discrimination Judgments of Frequency-Modulated Tones
qdm

Fit a Quadrilateral Dissimilarity Model
predict.qdm

Predictions of Quadrilateral Dissimilarity Model
psi

Create Discrimination Probabilities (Psi) from Data Frame
persp.qdm

Perspective Plot for Predictions of Quadrilateral Dissimilarity Model