exametrika: Test Theory Analysis and Biclustering

Implements comprehensive test data engineering methods as described in Shojima (2022, ISBN:978-9811699856). Provides statistical techniques for engineering and processing test data: Classical Test Theory (CTT) with reliability coefficients for continuous ability assessment; Item Response Theory (IRT) including Rasch, 2PL, and 3PL models with item/test information functions; Latent Class Analysis (LCA) for nominal clustering; Latent Rank Analysis (LRA) for ordinal clustering with automatic determination of cluster numbers; Biclustering methods including infinite relational models for simultaneous clustering of examinees and items without predefined cluster numbers; and Bayesian Network Models (BNM) for visualizing inter-item dependencies. Features local dependence analysis through LRA and biclustering, parameter estimation, dimensionality assessment, and network structure visualization for educational, psychological, and social science research.

Version: 1.10.1
Depends: R (≥ 4.1.0)
Imports: mvtnorm, igraph, Rcpp (≥ 1.0.7)
LinkingTo: Rcpp
Suggests: knitr, rmarkdown, testthat (≥ 3.0.0)
Published: 2026-03-19
DOI: 10.32614/CRAN.package.exametrika
Author: Koji Kosugi ORCID iD [aut, cre]
Maintainer: Koji Kosugi <kosugitti at gmail.com>
BugReports: https://github.com/kosugitti/exametrika/issues
License: MIT + file LICENSE
URL: https://kosugitti.github.io/exametrika/, https://github.com/kosugitti/exametrika
NeedsCompilation: yes
Language: en-US
Materials: README, NEWS
CRAN checks: exametrika results

Documentation:

Reference manual: exametrika.html , exametrika.pdf
Vignettes: Biclustering and Ranklustering (source, R code)
Getting Started with exametrika (source, R code)
exametrika 日本語ガイド (source, R code)
Item Response Theory (IRT) (source, R code)
Latent Class and Rank Analysis (source, R code)
Bayesian Network and Local Dependence Models (source, R code)

Downloads:

Package source: exametrika_1.10.1.tar.gz
Windows binaries: r-devel: exametrika_1.8.1.zip, r-release: exametrika_1.8.1.zip, r-oldrel: exametrika_1.8.1.zip
macOS binaries: r-release (arm64): exametrika_1.8.1.tgz, r-oldrel (arm64): exametrika_1.10.1.tgz, r-release (x86_64): exametrika_1.8.1.tgz, r-oldrel (x86_64): exametrika_1.8.1.tgz
Old sources: exametrika archive

Linking:

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