Apply the link function or its inverse to the argument.
link(x, link = "log", inv = FALSE)vector containing the predictor
string with the name of the link function
if TRUE its inverse is applied
Evaluated link function at x values.
This function is intended to port other link functions than \(\log{\left(\right)}\) to Poisson-Gamma Additive Models. For now, the only allowed value is "log".
Harvey, A. C., Fernandes, C. (1989) Time series models for count data or qualitative observations. Journal of Business and Economic Statistics, 7(4):407--417
McCullagh, P., Nelder, J. A. (1989). Generalized Linear Models. Chapman and Hall, 2nd edition, London