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mstATA

The goal of mstATA is to provide tools for automated test assembly of multistage tests using mixed-integer linear programming formulations.

Installation

You can install the development version of mstATA from GitHub using pak:

# install.packages("pak")
pak::pak("Hongchen030/mstATA")

Alternatively, you can use remotes:

# install.packages("remotes")
remotes::install_github("Hongchen030/mstATA")

mstATA supports multiple mixed-integer programming solvers, including:

Gurobi – requires separate installation and a valid license. Installation instructions are available here: https://CRAN.R-project.org/package=prioritizr. See the prioritizr package vignette “gurobi_installation_guide” for installation instructions. Gurobi requires a valid license. However, free academic licenses are available for qualified students and researchers through the Gurobi Academic Program.

HiGHS – available on CRAN via install.packages(“highs”)

GLPK (via Rglpk) – available on CRAN via install.package(“Rglpk”)

SYMPHONY (via Rsymphony) – available on CRAN via install.package(“Rsymphony”)

lpSolve (via lpSolveAPI) – available on CRAN via install.package(“lpSolveAPI”)

Vignettes

The package includes several vignettes:

• Getting Started with mstATA – complete end-to-end workflow.
• MST Assembly Examples: Bottom-Up, Top-Down, and Hybrid Strategies – bottom-up, top-down, and extended-hybrid strategies.
• Stimulus-Based Assessment in mstATA: Conditional Item Selection – conditional item selection with stimulus constraints.
• Formulation for Multiple Objectives – multi-objective optimization strategies and evaluation.
• Detecting and Resolving Infeasibility - how to deal with infeasibility.

To browse available vignettes:

browseVignettes("mstATA")
#> No vignettes found by browseVignettes("mstATA")

Citation

If you use mstATA in research, please cite:

Chen, H. (2026). mstATA: An R Package for IRT-Based Multistage Test Assembly.

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.