YPPE

1.0.1

Yang and Prentice Model with Piecewise Exponential Baseline Distribution

0packages depend

2.4Kdownloads / year

46.0%test coverage

9/13checks pass

Overview

About

Maintained by Fabio DemarquiFirst published 2019-10-092 releasesCRAN page ↗GitHub ↗

Semiparametric modeling of lifetime data with crossing survival curves via Yang and Prentice model with piecewise exponential baseline distribution. Details about the model can be found in Demarqui and Mayrink (2019) arXiv:1910.02406. Model fitting carried out via likelihood-based and Bayesian approaches. The package also provides point and interval estimation for the crossing survival times.

Install

R (CRAN)pak (dev)Ubuntu (r2u)openSUSE (OBS)

install.packages("YPPE", repos = "https://cloud.r-project.org/")

Installs the current CRAN release. Prebuilt binaries on Windows and macOS.

if (!requireNamespace("pak", quietly = TRUE))
  install.packages("pak", repos = "https://cloud.r-project.org/")
pak::pak("fndemarqui/YPPE")

Development version from fndemarqui/YPPE. Installs pak first if it is not already available.

Release

# enable cranapt (r2u) if it is not already set up, then install
grep -rqs r2u.stat.illinois.edu /etc/apt/sources.list /etc/apt/sources.list.d/ \
  || curl -fsSL https://raw.githubusercontent.com/eddelbuettel/r2u/master/inst/scripts/add_cranapt_noble.sh | sudo bash
sudo apt install -y r-cran-yppe

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled.

bspm (used by r2u) also needs make: sudo apt install make

# add the autoCRAN OBS repo (Tumbleweed) if it is missing, then install
zypper -q lr | grep -qi autoCRAN \
  || sudo zypper addrepo https://download.opensuse.org/repositories/devel:/languages:/R:/autoCRAN/openSUSE_Tumbleweed/devel:languages:R:autoCRAN.repo
sudo zypper install -y R-YPPE

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed).

Health

CRAN checks

4NOTE9OK

Failing flavors

NOTE r-devel-linux-x86_64-debian-clang
NOTE r-devel-linux-x86_64-debian-gcc
NOTE r-devel-linux-x86_64-fedora-clang
NOTE r-devel-linux-x86_64-fedora-gcc

Slowest check: 10.2 min · r-oldrel-windows-x86_64

Code health

Yes

Tests · ratio 0.03

46.0%

Coverage · measured lines

100%

Documentation · exports

Dependencies · direct

Check history

NOTE2026-04-22
7 OK · 7 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE
ERROR2026-04-18
6 OK · 7 NOTE · 0 WARNING · 1 ERROR · 0 FAILURE
NOTE2026-03-10
7 OK · 7 NOTE · 0 WARNING · 0 ERROR · 0 FAILURE

Documentation

READMENoVignettesNopkgdown siteNoNEWSYes · 67% structuredCode of conductNoContributing guideNo

Examples that run: 0%
Documented parameters: 92%
Return-value docs: 100%
References docs: 18%

Downloads

2.4K

CRAN downloads in the past year

Rank #13,246 · ~6/day · ~198/mo

Releases R versions

Daily download trend is not available in this view yet.

33730 days

79390 days

2.4K1 year

Compare downloads with other packages →

Also on383 r2u19 autocran

Repository

GitHub ↗ fndemarqui/yppe

4Stars

1Forks

0Open issues

1Open PRs

0Releases

50Commits

1Contributors

50 commits · Last activity 2023-10-17 · 0% stars, 30d

Stars over time

2022-04-14 · 32026-07-07 · 4

Repository practices

Upstream repositoryBeta

5 development-tooling and community-health practices detected across 4 families in the upstream repository

Checks run against github.com/fndemarqui/yppe on 2026-07-19.

Continuous integration (2)

GitHub ActionsTravis CI

CRAN release process (1)

cran-comments.md

Docs source (1)

README.Rmd

Lint, format, editor (1)

RStudio project

How this is detected·Detection ruleset v1 (2026-07-18)

Dependencies

Declared dependencies

10 external dependencies (excludes base and recommended)

Depends (2)

R >= 3.4.0survival

Imports (6)

methodsMASSFormula Rcpp rstan rstantools

LinkingTo (5)

BH Rcpp RcppEigen rstan StanHeaders

Suggests (1)

testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

Code & Tests

Datasets

People & History

People (1)

Maintainer (1)

Fabio Demarqui

Author, Maintainer

Authors (1)

Fabio Demarqui

Author, Maintainer

Package Timeline

2 releases. Pick two to compare their code metrics. R releases are shown for context.

R
R 4.6.0 released · 2026-04-24
R
R 4.5.0 released · 2025-04-11
R
R 4.4.0 released · 2024-04-24
R
R 4.3.0 released · 2023-04-21
R
R 4.2.0 released · 2022-04-22
R
R 4.1.0 released · 2021-05-18
R
R 4.0.0 released · 2020-04-24
1.0.1Latest
2020-01-09 · current release · diff ↗
1.0.0
2019-10-09
R
R 3.6.0 released · 2019-04-26

Package metadata

First published: 2019-10-09
Total releases: 2 / 7 yrs
License: GPL (>= 2) OSI
Minimum R: ≥ 3.4.0
Bundled data: 5.7 KB / 2 files
Download size: 34 KB
Installed size: not tracked yet
With dependencies: not tracked yet

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