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2007 Nov 21
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How to extract the Deviance of a glm fit result
dear List:
glm(a~b+c,family=binomial,data=x)->fit
deviance(fit) returns the same as the residual deviance.
I don't not know much about logistic regression.Some book tells that:
"
Deviance (likelihood ratio statistic):
Deviance = -2log( likelihoodof the currentmodel /likelihoodof thesaturated
model)
Note:
(1). The current model is the model of interest.
(2). The saturated model is the full model that considers observed data as
parameters,
thus there are as many parameters as data points (the full model gives a
perfect fit to the data). Under this model, the...