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## Statistical Methods and Models for Claims Reserving in General Insurance

Various statistical methods and models which are typically used for the estimation of outstanding claims reserves in general insurance, including those to estimate the claims development result as required under Solvency II.

ChainLadder is an R package providing methods and models which are typically used in insurance claims reserving, including:

• Loss development factor fitting and Cape Cod models
• Generalized linear models
• One year claims development result functions
• Utility functions to:
• convert tables into triangles and triangles into tables
• convert cumulative into incremental and incremental into cumulative triangles
• visualise triangles

David Hindley has created a Shiny App, which provides and interface to many of the ChainLadder package functions to accompany his book on Claims Reserving in General Insurance.

## Installation

You can install the stable version from CRAN:

install.packages('ChainLadder', dependencies = TRUE)


To install the current development version from github you need the devtools package and the other packages on which ChainLadder depends and links to:

install.packages(c("actuar", "cplm", "grid", "ggplot2", "knitr", "lattice", "Matrix", "MASS", "rmarkdown", "RUnit", "systemfit",  "statmod", "tweedie"))


library(devtools)


## Usage

library(ChainLadder)


See the ChainLadder package vignette for more details.

## Citation

To cite package 'ChainLadder' in publications see the output of:

citation(package="ChainLadder")


Markus Gesmann. Claims Reserving and IBNR. Computational Actuarial Science with R. 2014. Chapman and Hall/CRC

This package is free and open source software, licensed under GPL.