eba (version 1.4-2)

residuals.eba: Residuals for EBA Models

Description

Computes deviance and Pearson residuals for eba objects.

Usage

residuals.eba(object, type = c("deviance", "pearson"), ...)

Arguments

object

an object of class eba, typically the result of a call to eba

type

the type of residuals which should be returned; the alternatives are: "deviance" (default) and "pearson"

...

further arguments passed to or from other methods. None are used in this method.

Value

• A vector of residuals having as many elements as pairs of stimuli.

Details

Residuals are computed from the upper triangle of the paired-comparison matrix. See help(residuals.glm) for details.

See Also

eba, residuals.glm, plot.eba.

Examples

data(celebrities)  # absolute choice frequencies
btl <- eba(celebrities)  # fit BTL model
sum( resid(btl)^2 )  # deviance
sum( resid(btl, "pearson")^2 )  # Pearson chi2