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: IGPFrailty_0.1.0.zip, 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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