epmfd: Exploratory and Person/Item Misfit Diagnostics for Polytomous
Data
Analysis of items and persons in data. To identify and remove person misfit in polytomous
    item-response data using either 'mokken' or a graded response model (GRM, via 'mirt').
    Provides automatic thresholds, visual diagnostics (2D/3D), and export utilities. 
    Methods build on Mokken scaling as in Mokken (1971, ISBN:9789027968821) and on the
    graded response model of Samejima (1969) <doi:10.1007/BF03372160>.
| Version: | 1.1.1 | 
| Depends: | R (≥ 4.1.0) | 
| Imports: | dplyr, fs, ggplot2, mirt, mokken, PerFit, readr, rlang, tibble | 
| Suggests: | plotly, ggrepel, openxlsx, haven, patchwork, testthat (≥
3.0.0) | 
| Published: | 2025-10-20 | 
| DOI: | 10.32614/CRAN.package.epmfd | 
| Author: | Hasan Bulut  [aut,
    cre],
  Asiye Şengül Avşar  [aut] | 
| Maintainer: | Hasan Bulut  <hasan.bulut at omu.edu.tr> | 
| BugReports: | https://github.com/hsnbulut/epmfd/issues | 
| License: | GPL-3 | 
| URL: | https://github.com/hsnbulut/epmfd | 
| NeedsCompilation: | no | 
| Materials: | NEWS | 
| CRAN checks: | epmfd results | 
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