{ "_id": "6a46d9a16527f6f71f9f65c5", "Package": "grmtree", "Title": "Recursive Partitioning for Graded Response Models", "Version": "0.2.0", "Date": "2026-07-01", "Authors@R": "c(person(given = \"Olayinka I.\", family = \"Arimoro\", role = c(\"aut\", \"cre\"), email = \"olayinka.arimoro@ucalgary.ca\", comment = c(ORCID = \"0009-0009-9464-589X\")),\nperson(given = \"Tolulope T.\", family = \"Sajobi\", role = \"aut\", email = \"ttsajobi@ucalgary.ca\"),\nperson(given = \"Lisa M.\", family = \"Lix\", role = \"aut\", email = \"Lisa.Lix@umanitoba.ca\"),\nperson(given = \"Matthew T.\", family = \"James\", role = \"ctb\", email = \"mjames@ucalgary.ca\"),\nperson(given = \"Maria\", family = \"Santana\", role = \"ctb\", email = \"mjsantan@ucalgary.ca\"),\nperson(given = \"Emmanuel\", family = \"Ugochukwu\", role = \"ctb\", email = \"favour879@gmail.com\"))", "Maintainer": "Olayinka I. Arimoro ", "Description": "Provides methods for recursive partitioning based on the\n'Graded Response Model' ('GRM'), extending the 'MOB' algorithm\nfrom the 'partykit' package. The package allows for fitting\n'GRM' trees that partition the population into homogeneous\nsubgroups based on item response patterns and covariates.\nIncludes specialized plotting functions for visualizing 'GRM'\ntrees with different terminal node displays (threshold regions,\nparameter profiles, and factor score distributions). The\npackage also implements the Longitudinal GRMTree for detecting\nresponse shift in PROMs measured at two time points, embedding\na constrained two-factor longitudinal GRM within recursive\npartitioning, with post-hoc characterization of recalibration\nand reprioritization. For more details on the methods, see\nSamejima (1969) ,\nKomboz et al. (2018) and Arimoro\net al. (2025) .", "License": "GPL-3", "Config/testthat/edition": "3", "Encoding": "UTF-8", "RoxygenNote": "7.3.3", "URL": "https://github.com/Predicare1/grmtree", "BugReports": "https://github.com/Predicare1/grmtree/issues", "VignetteBuilder": "knitr", "LazyData": "true", "NeedsCompilation": "no", "Packaged": { "Date": "2026-07-02 21:30:41 UTC", "User": "root" }, "Author": "Olayinka I. Arimoro [aut, cre] (ORCID:\n), Tolulope T. Sajobi\n[aut], Lisa M. Lix [aut], Matthew T. 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