One-Step Estimation R package OneStep version 0.9.4 CRAN Task View: Distributions (https://CRAN.R-project.org/view=Distributions) Provide principally an eponymic function that numerically computes the Le Cam's one-step estimator for an independent and identically distributed sample. One-step estimation is asymptotically efficient (see L. Le Cam (1956) <https://projecteuclid.org/euclid.bsmsp/1200501652>) and can be computed faster than the maximum likelihood estimator for large observation samples, see e.g. Brouste et al. (2021) <doi:10.32614/RJ-2021-044>. Software Depends: fitdistrplus, numDeriv, parallel, extraDistr Suggests: actuar Christophe Dutang <dutangc@gmail.com> Comprehensive R Archive Network (CRAN) Alexandre Brouste [aut] (ORCID: <https://orcid.org/0000-0001-6719-7432>), Christophe Dutang [aut, cre] (ORCID: <https://orcid.org/0000-0001-6732-1501>), Darel Noutsa Mieniedou [ctb] GPL (>= 2) 2024-10-17 application/tgz https://CRAN.R-project.org/package=OneStep doi:10.32614/CRAN.package.OneStep