Package: OneShotEM
Type: Package
Title: Efficient eM-Algorithm for One-Shot Device Data Analysis
Version: 0.1.0
Authors@R: c(
    person("Shikhar", "Tyagi",
           email = "shikhar1093tyagi@gmail.com",
           role  = c("aut", "cre"),
           comment = c(ORCID = "0000-0003-1606-0844")),
    person("Arvind", "Pandey",
           email = "arvindmzu@gmail.com",
           role  = "aut"),
    person("Bhupendra", "Singh",
           email = "bhupendra.rana@gmail.com",
           role  = "aut"),
    person("Vrijesh", "Tripathi",
           email = "vrijesh.tripathi@uwi.edu",
           role  = "aut"))
Description: Implements the simple and efficient
        Expectation-Maximization (eM) algorithm proposed by Zhu, Li,
        Li, and Balakrishnan (2026) <doi:10.1080/03610918.2025.2515193>
        for parameter estimation in one-shot device accelerated life
        testing (ALT) data. Unlike traditional EM algorithms that
        impute exact failure times, this method treats failure counts
        between inspection intervals as missing data, resulting in
        faster convergence and enhanced numerical stability. Supports
        Exponential, Weibull, Lognormal, Gamma, and custom user-defined
        lifetime distributions under log-linear stress models. Standard
        errors, confidence intervals, model selection statistics (AIC,
        BIC, AICc, HQIC), residual diagnostics, and visualization tools
        are provided. References: Balakrishnan and Ling (2012)
        <doi:10.1016/j.csda.2011.09.010>, Fan, Balakrishnan, and Chang
        (2009) <doi:10.1080/00949650802142592>.
License: GPL (>= 3)
LazyData: true
Depends: R (>= 4.0.0)
Imports: stats, graphics, grDevices, utils, methods, numDeriv
Suggests: testthat (>= 3.0.0), knitr, rmarkdown
Config/testthat/edition: 3
Encoding: UTF-8
Language: en-US
RoxygenNote: 7.3.3
VignetteBuilder: knitr
NeedsCompilation: no
Packaged: 2026-09-21 09:40:16 UTC; root
Author: Shikhar Tyagi [aut, cre] (ORCID:
        <https://orcid.org/0000-0003-1606-0844>), Arvind Pandey [aut],
        Bhupendra Singh [aut], Vrijesh Tripathi [aut]
Maintainer: Shikhar Tyagi <shikhar1093tyagi@gmail.com>
Repository: https://shikhartyagi.r-universe.dev
Date/Publication: 2026-08-21 12:41:11 UTC
RemoteUrl: https://github.com/cran/OneShotEM
RemoteRef: HEAD
RemoteSha: 074743e717b312e96c21d3d510b44a53ad3f53db