MYIS: 'Moreau-Yosida' Importance Sampling for Statistical Inference

Implements 'Moreau-Yosida' Markov chain Monte Carlo ('MCMC') importance sampling for parameter estimation and Bayesian inference under smooth, non-differentiable, or light-tailed target posterior distributions and arbitrary probability models with complete or censored data. Users supply user-defined probability density functions, optional distribution functions, parameter ranges, and observations subject to complete, right, left, interval, Type-I, Type-II, progressive Type-II, first-failure, or truncation schemes. Constructs 'Moreau-Yosida' envelopes, gradient-based proposals ('MALA', 'HMC', or 'RWM'), self-normalized importance weights, batch-means asymptotic variance estimates, and Bayesian marginal quantiles. Methodologies are based on 'Shukla', 'Vats', and 'Chi' (2025) <doi:10.48550/arXiv.2501.02228>, 'Pereyra' (2016) <doi:10.1111/sjos.12208>, 'Durmus' and others (2022) <doi:10.1214/22-EJS2027>, 'Chen' and 'Shao' (1999) <doi:10.1214/ss/1009211804>, 'Roberts' and 'Rosenthal' (1998) <doi:10.1214/aoap/1028903378>, 'Geweke' (1989) <doi:10.2307/2290062>, 'Hesterberg' (1995) <doi:10.1080/00031305.1995.10476138>, and 'Balakrishnan' and 'Aggarwala' (2000, ISBN:978-0-8176-4001-9).

Version: 0.1.0
Depends: R (≥ 4.1.0)
Imports: stats, graphics
Suggests: testthat (≥ 3.0.0), knitr, rmarkdown
Published: 2026-08-05
DOI: 10.32614/CRAN.package.MYIS
Author: Shikhar Tyagi ORCID iD [aut, cre], Arvind Pandey [aut], Bhupendra Singh [aut], Vrijesh Tripathi [aut]
Maintainer: Shikhar Tyagi <shikhar1093tyagi at gmail.com>
License: GPL-3
NeedsCompilation: no
Language: en-US
CRAN checks: MYIS results

Documentation:

Reference manual: MYIS.html , MYIS.pdf
Vignettes: Introduction to Moreau-Yosida MCMC Importance Sampling ('MYIS') (source, R code)

Downloads:

Package source: MYIS_0.1.0.tar.gz
Windows binaries: r-devel: not available, r-release: MYIS_0.1.0.zip, r-oldrel: MYIS_0.1.0.zip
macOS binaries: r-release (arm64): MYIS_0.1.0.tgz, r-oldrel (arm64): MYIS_0.1.0.tgz, r-release (x86_64): MYIS_0.1.0.tgz, r-oldrel (x86_64): MYIS_0.1.0.tgz

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