R Observatory: Metrics for RSCAT version 1.1.3

Balamuta, James Joseph

doi:10.5281/zenodo.21843040

RSCAT

1.1.3Package record

Shadow-Test Approach to Computerized Adaptive Testing

0packages depend

2.7Kdownloads / year

1.2%test coverage

13/13flavors OK

Overview

About

Maintained by Bingnan JiangCRAN page ↗GitHub ↗Issues ↗

As an advanced approach to computerized adaptive testing (CAT), shadow testing (van der Linden(2005) doi:10.1007/0-387-29054-0) dynamically assembles entire shadow tests as a part of selecting items throughout the testing process. Selecting items from shadow tests guarantees the compliance of all content constraints defined by the blueprint. 'RSCAT' is an R package for the shadow-test approach to CAT. The objective of 'RSCAT' is twofold: 1) Enhancing the effectiveness of shadow-test CAT simulation; 2) Contributing to the academic and scientific community for CAT research. RSCAT is currently designed for dichotomous items based on the three-parameter logistic (3PL) model.

Install

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

install.packages("RSCAT", 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("act-org/RSCAT")

Development version from act-org/RSCAT. 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-rscat

Fast Ubuntu binaries via r2u (no compilation). The cranapt setup runs once and is skipped when it is already enabled. We list this channel from recorded r2u download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

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-RSCAT

RPMs auto-built from CRAN on openSUSE OBS (Tumbleweed). We list this channel from recorded autoCRAN download activity rather than from a live index of the repository, so treat it as last known rather than guaranteed.

Health

CRAN checks

13OK

CRAN check page ↗

Slowest check: 2.2 min · r-oldrel-windows-x86_64

Status changes

OK13 OK2026-09-08
ERROR12 OK, 1 ERROR2026-09-07
OK13 OK2026-08-05
NOTE12 OK, 1 NOTE2026-08-01
OK14 OK2026-04-06

Show 2 earlier changesHide 2 earlier changes

ERROR13 OK, 1 ERROR2026-04-04
OK14 OK2026-03-10

Advisories

none known

How this is measured·How advisories are found

Documentation

In release 1.1.3

READMEYes · 1,159 wordsVignettesNoNEWSNoCitation fileNoWebsitenot declared in DESCRIPTION

Help pages: 13
Examples that run: 100%3 run in a plain check (3 of them under a condition)
Exported functions with examples: 33%
Documented parameters: 100%
Return-value docs: 22%
Help pages citing references: 0%

How these are measured

Downloads

2.7K

CRAN downloads in the past year

Rank #16,672 · ~7/day · ~227/mo

Releases R versions

Daily download trend is not available in this view yet.

27030 days

74990 days

2.7K1 year

Compare downloads with other packages →

Also on69 r2u6 autocran

How downloads are counted

Repository

act-org/rscat ↗

Responsiveness

not measured

How these are measured

PracticesBeta

Repository github.com/act-org/rscat is linked, but repository-practices checks have not run for it yet.

How this is detected·Detection ruleset v3 (2026-09-26)

Dependencies

Declared dependencies

8 external dependencies (excludes base and recommended)

Installing RSCAT adds 46 packages (24 with compiled code, 40 MB of source tarballs). Heaviest: ggplot2 6.0 MB, bslib 5.6 MB, promises 3.1 MB.

Depends (5)

R >= 3.4.0rJava shiny shinycssloaders shinyjs

Imports (7)

Metrics ggplot2 gridExtragridmethodsstatsutils

LinkingTo (0)

none

Suggests (1)

testthat

Enhances (0)

none

Dependency license breakdown →

Reverse dependencies

0direct

0indirect

Nothing depends on this yet.

How these are counted

Code & Tests

Datasets

People & History

People (2)

Bingnan Jiang

Author, Maintainer since 1.0.0 (2019)

ACT, Inc.

Copyright holder

Releases (5)

Pick two releases to compare their code metrics.

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
1.1.3Latest
record
2021-10-12 · current release · diff ↗
R
R 4.1.0 released · 2021-05-18
1.1.2
record
2021-05-16 · diff ↗
1.1.1
record
2021-05-08 · diff ↗
R
R 4.0.0 released · 2020-04-24
1.1.0
record
2020-01-17 · diff ↗
R
R 3.6.0 released · 2019-04-26
1.0.0
record
2019-04-12
R
R 3.5.0 released · 2018-04-23

Package metadata

First published: 2019-04-12
Total releases: 5 / 7 yrs
License: CC BY-NC 4.0
Minimum R: ≥ 3.4.0
Download size: 354 KB

Cite

Cite this package

Run in R for the authors' preferred citation:

citation("RSCAT")

Format

Jiang, B., & ACT, Inc. (2021). RSCAT: Shadow-Test Approach to Computerized Adaptive Testing (Version 1.1.3) [Computer software]. https://doi.org/10.32614/CRAN.package.RSCAT

This package has no citation file, so citation() returns this entry built from DESCRIPTION.

Cite the R Observatory

For a number measured here: a download total, a coverage figure, an archival date.

Format

APA

Balamuta, J. J. (2026). R Observatory: Metrics for RSCAT version 1.1.3 [Data set]. HJJB, LLC. Data release v2026-10-20. https://doi.org/10.5281/zenodo.21843040

From data release v2026-10-20, which the citation names so these numbers can be found later. More on citing and the projects behind them.

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