MLCM (version 0.4.3)

MLCM-package: Maximum Likelihood Conjoint Measurement

Description

Estimate perceptual scales from data collected in a conjoint measurement experiment by maximum likelihood. Data for conjoint measurement are typically collected using a psychophysical procedure. The stimuli vary along \(n \ge 2\) dimensions. The observer views pairs of stimuli and judges which stimulus of each pair is higher on a specified dimension. For example, stimuli may be goods baskets containing amounts of milk and honey (dimensions) and the subject may order each pair of baskets by subjective desirability. This package contains functions to estimate the additive contribution of the \(n\) scales to the judgment by a maximum likelihood method under several hypotheses of how the perceptual dimensions interact.

Details

Package:	MLCM
Type:	Package
Version:	0.4.3
Date:	2020-01-11
License:	GPL
LazyLoad:	yes
LazyData:	yes

Index:

BumpyGlossy		Dataset: Conjoint Measurement for Bumpiness and Glossiness (Ho et al. 2008)
Texture			Dataset: 3-way conjoint Measurement for Texture (Sun et. al, 2021)
MLCM-package		Estimate perceptual scales from a conjoint measurement experiment by maximum likelihood
anova.mlcm		Likelihood ratio tests for Maximum Likelihood Conjoint Measurement models
logLik.mlcm		Calculate log likelihood for Conjoint Measurement models
make.wide		Create data frame for Fitting Conjoint Measurement Scale by glm
mlcm			Fit Conjoint Measurement Models by Maximum Likelihood
plot.mlcm		plot method for Maximum Likelihood Conjoint Measurement models
print.mlcm		print method for Maximum Likelihood Conjoint Measurement models
print.summary.mlcm	print  method for summary of Maximum Likelihood Conjoint Measurement models
summary.mlcm		summary method for Maximum Likelihood Conjoint Measurement models

References

Luce, R. D., and Tukey, J. W. (1964). Simultaneous conjoint measurement. Journal of Mathematical Psychology, 1, 1--27.

Krantz, D. H., Luce, R. D., Suppes, P., and Tversky, A. (1971). Foundations of Measurement, Vol. 1: Additive and Polynomial Representations. New York: Academic Press.

Ho, Y. H., Landy. M. S. and Maloney, L. T. (2008). Conjoint measurement of gloss and surface texture. Psychological Science, 19, 196--204.

See Also

glm

Examples

# NOT RUN {
bg.acm <- mlcm(BumpyGlossy)
plot(bg.acm, pch = 21:22, bg = c("blue", "red"), col = "black",
	ylab = "Contributions to Perceived Bumpiness")
# }