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3.11 Link functions

The following functions are commonly used as link functions in generalized linear models. The function $\Phi$ is also commonly used as a link function (see section probability-related functions).

R logit(T x)
log odds, or logit, function applied to x
Available since 2.0, vectorized in 2.13

R inv_logit(T x)
logistic sigmoid function applied to x
Available since 2.0, vectorized in 2.13

R inv_cloglog(T x)
inverse of the complementary log-log function applied to x
Available since 2.0, vectorized in 2.13