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exametrika  

Test Theory Analysis and Biclustering
View on CRAN: Click here


Download and install exametrika package within the R console
Install from CRAN:
install.packages("exametrika")

Install from Github:
library("remotes")
install_github("cran/exametrika")

Install by package version:
library("remotes")
install_version("exametrika", "1.8.0")



Attach the package and use:
library("exametrika")
Maintained by
Koji Kosugi
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2024-11-22
Latest Update: 2025-03-09
Description:
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.
How to cite:
Koji Kosugi (2024). exametrika: Test Theory Analysis and Biclustering. R package version 1.8.0, https://cran.r-project.org/web/packages/exametrika. Accessed 07 Jun. 2026.
Previous versions and publish date:
1.1.0 (2024-11-22 10:30), 1.2.0 (2025-01-31 11:20), 1.5.1 (2025-03-09 06:10), 1.6.0 (2025-08-19 06:20), 1.6.1 (2025-08-27 04:40), 1.6.3 (2025-10-01 00:50), 1.6.5 (2025-11-06 09:00), 1.7.0 (2025-11-22 09:00), 1.8.0 (2025-12-10 10:10), 1.8.1 (2026-02-17 14:10), 1.10.1 (2026-03-19 12:40), 1.11.0 (2026-04-15 07:40)
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Complete documentation for exametrika
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Full exametrika package functions and examples
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