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R Package BayesMoFo

Carry out Bayesian estimation and forecasting of a variety of stochastic mortality models using vague prior distributions. The structure of mortality data that we focus on analysing is a three-dimensional array of dimension \(p \times A \times T\) (strata \(\times\) age \(\times\) year), i.e., stratified mortality data. The stratification can be based on various factors such as: causes of death, countries, deprivation levels, gender/sex, geographical locations/regions, insurance products, marital statuses, socioeconomic groups, smoking behaviours, etc. While the primary focus of the package is on stratified mortality data (\(p > 1\)), it is also capable of analysing unstratified mortality data defined over age and time only (i.e., \(p = 1\)). Model selection, using Deviance Information Criterion (DIC), is also supported within the package.

Documentation

The PDF documentation containing descriptions of all data and functions in the package is in the manual “BayesMoFo.pdf”. The vignette file also contains a general tutorial on how to use the package.

Installation guide

To install the latest stable release of the BayesMoFo package from CRAN:

install.packages("BayesMoFo")

To install the development version with the latest (possibly unstable) updates from GitHub:

install.packages("devtools")

devtools::install_github("jstw1g09/Rpackage-BayesMoFo")

Note that the GitHub version may contain experimental features or be under active development. For practical use, we recommend the CRAN stable release.

The package can then be loaded as:

library(BayesMoFo)

Some limitations

• Current version does not allow user-specified prior distributions.
• The projection models for time and cohort effects (\(\kappa_t\) and \(\gamma_c\)) are pre-defined. It might be more appropriate to allow customisations or to perform model selection.
• It is not optimised in terms of computational speed and memory management (can occupy considerable RAM).

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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