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TSQCA: Threshold Sweep Extensions for Qualitative Comparative Analysis

Provides threshold sweep methods for Qualitative Comparative Analysis (QCA). Implements Condition Threshold Sweep-Single (CTS-S), Condition Threshold Sweep-Multiple (CTS-M), Outcome Threshold Sweep (OTS), and Dual Threshold Sweep (DTS) for systematic exploration of threshold calibration effects on crisp-set QCA results. These methods extend traditional robustness approaches by treating threshold variation as an exploratory tool for discovering causal structures. Built on top of the 'QCA' package by Dusa (2019) <doi:10.1007/978-3-319-75668-4>, with function arguments following 'QCA' conventions. Based on set-theoretic methods by Ragin (2008) <doi:10.7208/chicago/9780226702797.001.0001> and established robustness protocols by Rubinson et al. (2019) <doi:10.1177/00491241211036158>.

Version: 1.0.0
Depends: R (≥ 4.0)
Imports: QCA
Suggests: knitr, rmarkdown, testthat (≥ 3.0.0)
Published: 2026-01-08
DOI: 10.32614/CRAN.package.TSQCA
Author: Yuki Toyoda [aut, cre], Japan Society for the Promotion of Science [fnd] (KAKENHI Grant Number JP20K01998)
Maintainer: Yuki Toyoda <yuki.toyoda.ds at hosei.ac.jp>
BugReports: https://github.com/im-research-yt/TSQCA/issues
License: MIT + file LICENSE
URL: https://github.com/im-research-yt/TSQCA, https://doi.org/10.5281/zenodo.17899390
NeedsCompilation: no
Citation: TSQCA citation info
Materials: README, NEWS
CRAN checks: TSQCA results

Documentation:

Reference manual: TSQCA.html , TSQCA.pdf
Vignettes: TSQCA Reproducible Code (English) (source, R code)
TSQCA Tutorial (English) (source, R code)

Downloads:

Package source: TSQCA_1.0.0.tar.gz
Windows binaries: r-devel: TSQCA_1.0.0.zip, r-release: TSQCA_1.0.0.zip, r-oldrel: TSQCA_1.0.0.zip
macOS binaries: r-release (arm64): TSQCA_1.0.0.tgz, r-oldrel (arm64): TSQCA_1.0.0.tgz, r-release (x86_64): TSQCA_1.0.0.tgz, r-oldrel (x86_64): TSQCA_1.0.0.tgz
Old sources: TSQCA archive

Linking:

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These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.