coef.mdf | R Documentation |
coef
method for S3 class "mdf"
objects.
This function extracts person and/or item parameters obtained after fitting MUDFOLD to binary preferential-choice data.
## S3 method for class 'mdf' coef(object, type, ...)
object |
: A fitted object of class |
type |
: Argument that controls the type of parameters to be returned. If |
... |
: not in use at the current version of the package. |
A vector when type="persons"
or type="items"
. Alist when type="all"
.
Spyros E. Balafas (s.balafas@rug.nl)
W.H. Van Schuur.(1984). Structure in Political Beliefs: A New Model for Stochastic Unfolding with Application to European Party Activists. CT Press.
W.J. Post. (1992). Nonparametric Unfolding Models: A Latent Structure Approach. M & T series. DSWO Press.
W.J. Post. and T.AB. Snijders. (1993). Nonparametric unfolding models for dichotomous data. Methodika.
## load the ANDRICH data data("ANDRICH") ## fit a MUDFOLD scale to the ANDRICH data mudf_andrich <- mudfold(ANDRICH) ## obtain the parameters from the fitted object coef(mudf_andrich)
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