IGPFrailty: Inverse Gaussian Process Degradation Models with Frailty

Maximum likelihood estimation and reliability inference for Inverse Gaussian Process (IGP) degradation models with gamma and inverse Gaussian frailty terms, as formulated by Morita et al. (2021) <doi:10.1002/qre.2762>. Classical IGP degradation models are described in Wasan (1968) and Meeker and Escobar (1998, ISBN:978-0471143284). The package provides tools for calculating lifetime cumulative distribution functions, probability density functions, lifetime quantiles with confidence intervals, posterior individual unit frailties, and goodness-of-fit diagnostics.

Version:	0.1.0
Depends:	R (≥ 3.5.0)
Imports:	stats, graphics, grDevices, utils
Suggests:	testthat (≥ 3.0.0), knitr, rmarkdown
Published:	2026-08-25
DOI:	10.32614/CRAN.package.IGPFrailty
Author:	Shikhar Tyagi [aut, cre], Vrijesh Tripathi [aut]
Maintainer:	Shikhar Tyagi <shikhar1093tyagi at gmail.com>
License:	GPL (≥ 3)
NeedsCompilation:	no
CRAN checks:	IGPFrailty results

Documentation:

Reference manual:	IGPFrailty.html , IGPFrailty.pdf
Vignettes:	Inverse Gaussian Process Degradation Models with Frailty (source, R code)

Downloads:

Package source:	IGPFrailty_0.1.0.tar.gz
Windows binaries:	r-devel: not available, r-release: IGPFrailty_0.1.0.zip, r-oldrel: IGPFrailty_0.1.0.zip
macOS binaries:	r-release (arm64): IGPFrailty_0.1.0.tgz, r-oldrel (arm64): IGPFrailty_0.1.0.tgz, r-release (x86_64): IGPFrailty_0.1.0.tgz, r-oldrel (x86_64): IGPFrailty_0.1.0.tgz

Linking:

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