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Returns the deviance of a fitted model object.

Usage

# S3 method for spmod
deviance(object, ...)

Arguments

object

A fitted model object from splm() or spautor() where estmethod is "ml" or "reml".

...

Other arguments. Not used (needed for generic consistency).

Value

The deviance.

Details

For spmod objects estimated using "ml" or "reml", the deviance is \((y - X \beta)^T V (y - X \beta)\) for an inverse covariance matrix \(V\), analogous to residual sums of (whitened) squares.

Examples

spmod <- splm(z ~ water + tarp,
  data = caribou,
  spcov_type = "exponential", xcoord = x, ycoord = y
)
deviance(spmod)
#> [1] 26