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A general description is here.
‘weighted.residuals()’ now returns weighted working residuals for ‘"glm"’ objects. It used to return deviance residuals, but these do not give the one-step approximated ‘dfbeta’ values, as pointed out by Ravi Varadhan. ‘influence.glm()’ has been amended so that it now returns an object with both a ‘"wt.res"’ and a ‘"dev.res"’ element.