The Iterative Lee-Carter (ilc) package is a freely available collection of R
1
(programming)
functions for the analysis of age-period mortality data that implements specific regression and
descriptive methods to fit a generalised class of LC type modelling structures. The purpose of
the mortality modelling package described here is to apply an improved modelling framework,
which extends the standard LC method based on the Normal error structure that was originally
proposed in Lee and Carter (1992).