{
  "_id": "6a228dd8cd65a98ecbd550a2",
  "Package": "irtpwr",
  "Title": "Power Analysis for IRT Models Using the Wald, LR, Score, and\nGradient Statistics",
  "Version": "1.0.3.9000",
  "Authors@R": "c(\nperson(\"Felix\", \"Zimmer\", , \"felix.zimmer@mail.de\", role = c(\"aut\", \"cre\"),\ncomment = c(ORCID = \"0000-0002-8127-0007\")),\nperson(\"Rudolf\", \"Debelak\", , \"rudolf.debelak@psychologie.uzh.ch\", role = c(\"aut\"),\ncomment = c(ORCID = \"0000-0001-8900-2106\")),\nperson(\"Jan\", \"Radek\", , \"jan.radek@uzh.ch\", role = c(\"ctb\"))\n)",
  "Description": "Implementation of analytical and sampling-based power\nanalyses for the Wald, likelihood ratio (LR), score, and\ngradient tests. Can be applied to item response theory (IRT)\nmodels that are fitted using marginal maximum likelihood\nestimation. The methods are described in our paper (Zimmer et\nal. (2022) <doi:10.1007/s11336-022-09883-5>).",
  "License": "GPL (>= 3)",
  "URL": "https://github.com/flxzimmer/irtpwr",
  "BugReports": "https://github.com/flxzimmer/irtpwr/issues",
  "Encoding": "UTF-8",
  "RoxygenNote": "7.2.3",
  "VignetteBuilder": "knitr",
  "Config/pak/sysreqs": "cmake make libuv1-dev libx11-dev",
  "Repository": "https://flxzimmer.r-universe.dev",
  "Date/Publication": "2024-03-12 17:31:48 UTC",
  "RemoteUrl": "https://github.com/flxzimmer/irtpwr",
  "RemoteRef": "HEAD",
  "RemoteSha": "faa97fd860949c00a7234c7c269c386937a41ff0",
  "NeedsCompilation": "no",
  "Packaged": {
    "Date": "2026-06-05 08:47:04 UTC",
    "User": "root"
  },
  "Author": "Felix Zimmer [aut, cre] (ORCID:\n<https://orcid.org/0000-0002-8127-0007>),\nRudolf Debelak [aut] (ORCID: <https://orcid.org/0000-0001-8900-2106>),\nJan Radek [ctb]",
  "Maintainer": "Felix Zimmer <felix.zimmer@mail.de>",
  "MD5sum": "055197ac99274e314aac726f2480a8bc",
  "_user": "flxzimmer",
  "_type": "src",
  "_file": "irtpwr_1.0.3.9000.tar.gz",
  "_fileid": "9e959e24ab2fab59f941014fc049b1cf8c57f4c9f5b0e11f7d036e637d155989",
  "_filesize": 596977,
  "_sha256": "9e959e24ab2fab59f941014fc049b1cf8c57f4c9f5b0e11f7d036e637d155989",
  "_created": "2026-06-05T08:47:04.000Z",
  "_published": "2026-06-05T08:50:32.241Z",
  "_distro": "noble",
  "_jobs": [
    {
      "job": 79694804076,
      "time": 176,
      "config": "linux-devel-x86_64",
      "r": "4.7.0",
      "check": "OK",
      "artifact": "7432591732"
    },
    {
      "job": 79694804075,
      "time": 148,
      "config": "linux-release-x86_64",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7432582234"
    },
    {
      "job": 79694804072,
      "time": 113,
      "config": "macos-oldrel-arm64",
      "r": "4.5.3",
      "check": "OK",
      "artifact": "7432571026"
    },
    {
      "job": 79694804063,
      "time": 119,
      "config": "macos-release-arm64",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7432573502"
    },
    {
      "job": 79694039603,
      "time": 309,
      "config": "source",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7432534381"
    },
    {
      "job": 79694804107,
      "time": 124,
      "config": "wasm-release",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7432575094"
    },
    {
      "job": 79694804078,
      "time": 73,
      "config": "windows-devel",
      "r": "4.7.0",
      "check": "OK",
      "artifact": "7432558879"
    },
    {
      "job": 79694804145,
      "time": 86,
      "config": "windows-oldrel",
      "r": "4.5.3",
      "check": "OK",
      "artifact": "7432562510"
    },
    {
      "job": 79694804103,
      "time": 81,
      "config": "windows-release",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7432561098"
    }
  ],
  "_buildurl": "https://github.com/r-universe/flxzimmer/actions/runs/27004903296",
  "_status": "success",
  "_host": "GitHub-Actions",
  "_upstream": "https://github.com/flxzimmer/irtpwr",
  "_commit": {
    "id": "faa97fd860949c00a7234c7c269c386937a41ff0",
    "author": "Felix <49242603+flxzimmer@users.noreply.github.com>",
    "committer": "Felix <49242603+flxzimmer@users.noreply.github.com>",
    "message": "Added check for correct format of d parameter in PCM vs GPCM hypothesis (a column of zeros is now automatically added if not present)\n",
    "time": 1710264708
  },
  "_maintainer": {
    "name": "Felix Zimmer",
    "email": "felix.zimmer@mail.de",
    "login": "flxzimmer",
    "description": "",
    "uuid": 49242603,
    "orcid": "0000-0002-8127-0007"
  },
  "_registered": true,
  "_dependencies": [
    {
      "package": "R",
      "version": ">= 4.1.0",
      "role": "Depends"
    },
    {
      "package": "mirt",
      "role": "Imports"
    },
    {
      "package": "Deriv",
      "role": "Imports"
    },
    {
      "package": "digest",
      "role": "Imports"
    },
    {
      "package": "spatstat.random",
      "role": "Imports"
    },
    {
      "package": "ggplot2",
      "role": "Imports"
    },
    {
      "package": "methods",
      "role": "Imports"
    },
    {
      "package": "testthat",
      "role": "Suggests"
    },
    {
      "package": "knitr",
      "role": "Suggests"
    },
    {
      "package": "rmarkdown",
      "role": "Suggests"
    }
  ],
  "_owner": "flxzimmer",
  "_selfowned": true,
  "_usedby": 0,
  "_updates": [],
  "_tags": [],
  "_stars": 2,
  "_contributors": [
    {
      "user": "flxzimmer",
      "count": 50,
      "uuid": 49242603
    }
  ],
  "_userbio": {
    "uuid": 49242603,
    "type": "user",
    "name": "flxzimmer"
  },
  "_downloads": {
    "count": 151,
    "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/irtpwr"
  },
  "_devurl": "https://github.com/flxzimmer/irtpwr",
  "_searchresults": 9,
  "_rbuild": "4.6.0",
  "_assets": [
    "extra/citation.cff",
    "extra/citation.html",
    "extra/citation.json",
    "extra/citation.txt",
    "extra/contents.json",
    "extra/irtpwr.html",
    "extra/NEWS.html",
    "extra/NEWS.txt",
    "extra/readme.html",
    "extra/readme.md",
    "manual.pdf"
  ],
  "_homeurl": "https://github.com/flxzimmer/irtpwr",
  "_realowner": "flxzimmer",
  "_cranurl": true,
  "_releases": [
    {
      "version": "1.0.0",
      "date": "2022-11-16"
    },
    {
      "version": "1.0.1",
      "date": "2023-09-08"
    },
    {
      "version": "1.0.2",
      "date": "2023-09-29"
    },
    {
      "version": "1.0.3",
      "date": "2023-11-20"
    }
  ],
  "_exports": [
    "calc.time",
    "irtpwr",
    "load.functions",
    "pars.long",
    "setup.hypothesis"
  ],
  "_help": [
    {
      "page": "calc.time",
      "title": "Calculate the computation time needed for the analytical method",
      "topics": [
        "calc.time"
      ]
    },
    {
      "page": "irtpwr",
      "title": "Perform Power Analysis",
      "topics": [
        "irtpwr"
      ]
    },
    {
      "page": "load.functions",
      "title": "Load IRT model functions and derivatives",
      "topics": [
        "load.functions"
      ]
    },
    {
      "page": "pars.long",
      "title": "Transform parameters to a longer format",
      "topics": [
        "pars.long"
      ]
    },
    {
      "page": "plot.irtpwrresult",
      "title": "Plot Power Curves",
      "topics": [
        "plot.irtpwrresult"
      ]
    },
    {
      "page": "print.summary.irtpwrresult",
      "title": "Print Summary of the search result",
      "topics": [
        "print.summary.irtpwrresult"
      ]
    },
    {
      "page": "setup.hypothesis",
      "title": "Setup null and alternative hypothesis",
      "topics": [
        "setup.hypothesis"
      ]
    },
    {
      "page": "summary.irtpwrresult",
      "title": "Summary of the Power Analysis",
      "topics": [
        "summary.irtpwrresult"
      ]
    }
  ],
  "_readme": "https://github.com/flxzimmer/irtpwr/raw/HEAD/README.md",
  "_rundeps": [
    "abind",
    "audio",
    "beepr",
    "brio",
    "callr",
    "class",
    "cli",
    "clipr",
    "cluster",
    "codetools",
    "cpp11",
    "crayon",
    "dcurver",
    "deldir",
    "Deriv",
    "desc",
    "diffobj",
    "digest",
    "dplyr",
    "e1071",
    "evaluate",
    "farver",
    "fs",
    "future",
    "future.apply",
    "generics",
    "ggplot2",
    "globals",
    "glue",
    "GPArotation",
    "gridExtra",
    "gtable",
    "isoband",
    "jsonlite",
    "labeling",
    "lattice",
    "lifecycle",
    "listenv",
    "magrittr",
    "MASS",
    "Matrix",
    "mgcv",
    "mirai",
    "mirt",
    "nanonext",
    "nlme",
    "parallelly",
    "pbapply",
    "permute",
    "pillar",
    "pkgbuild",
    "pkgconfig",
    "pkgload",
    "polyclip",
    "praise",
    "processx",
    "progressr",
    "proxy",
    "ps",
    "qs2",
    "R.methodsS3",
    "R.oo",
    "R.utils",
    "R6",
    "RColorBrewer",
    "Rcpp",
    "RcppArmadillo",
    "RcppParallel",
    "rlang",
    "rprojroot",
    "S7",
    "scales",
    "sessioninfo",
    "SimDesign",
    "spatstat.data",
    "spatstat.geom",
    "spatstat.random",
    "spatstat.sparse",
    "spatstat.univar",
    "spatstat.utils",
    "splines2",
    "stringfish",
    "tensor",
    "testthat",
    "tibble",
    "tidyselect",
    "utf8",
    "vctrs",
    "vegan",
    "viridisLite",
    "waldo",
    "withr"
  ],
  "_vignettes": [
    {
      "source": "adding_hypotheses.Rmd",
      "filename": "adding_hypotheses.html",
      "title": "Adding Hypotheses",
      "engine": "knitr::rmarkdown",
      "headings": [
        "Walkthrough",
        "Function to set up the restricted model",
        "Function to set up the unrestricted model",
        "Function to maximize the likelihood of the restricted parameters",
        "Putting it together",
        "Testing the new hypothesis"
      ],
      "created": "2021-03-05 12:23:38",
      "modified": "2022-11-09 14:09:13",
      "commits": 15
    },
    {
      "source": "demo.Rmd",
      "filename": "demo.html",
      "title": "Demo",
      "engine": "knitr::rmarkdown",
      "headings": [
        "Introduction",
        "Toy Example",
        "Main Functions and Arguments",
        "setup.hypothesis",
        "irtpwr Function",
        "Further Examples",
        "3PL Model",
        "Multidimensional Model"
      ],
      "created": "2020-11-02 20:45:12",
      "modified": "2022-11-07 11:05:59",
      "commits": 15
    },
    {
      "source": "hypothesis_templates.Rmd",
      "filename": "hypothesis_templates.html",
      "title": "Hypothesis Templates",
      "engine": "knitr::rmarkdown",
      "headings": [
        "h_1PLvs2PL",
        "h_DIF2PL",
        "h_PCMvsGPCM",
        "h_2PL_basic",
        "h_3PL_basic",
        "h_multi_basic",
        "h_multi_basic2"
      ],
      "created": "2022-11-02 00:57:18",
      "modified": "2023-09-07 14:27:30",
      "commits": 9
    },
    {
      "source": "power_analysis.Rmd",
      "filename": "power_analysis.html",
      "title": "Power Analysis for the Wald, LR, Score, and Gradient Tests using irtpwr",
      "author": "Jan Radek",
      "engine": "knitr::rmarkdown",
      "headings": [
        "1. Introduction",
        "2. General workflow for irtpwr",
        "3. Rasch against 2PL model",
        "3.1. A priori power analysis",
        "3.2. A posteriori power analysis",
        "4. DIF analysis in 2PL model",
        "4.1. A priori power analysis",
        "4.2. A posteriori power analysis"
      ],
      "created": "2023-09-07 12:59:08",
      "modified": "2023-09-29 08:23:38",
      "commits": 4
    }
  ],
  "_score": 4.6020599913279625,
  "_indexed": true,
  "_nocasepkg": "irtpwr",
  "_universes": [
    "flxzimmer"
  ],
  "_binaries": [
    {
      "r": "4.7.0",
      "os": "linux",
      "version": "1.0.3.9000",
      "date": "2026-06-05T08:50:02.000Z",
      "distro": "noble",
      "commit": "faa97fd860949c00a7234c7c269c386937a41ff0",
      "fileid": "528f592b5fce9b1a5a21023c66729a8cb4111680c4fa12e747efb66291db5e99",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/flxzimmer/actions/runs/27004903296"
    },
    {
      "r": "4.6.0",
      "os": "linux",
      "version": "1.0.3.9000",
      "date": "2026-06-05T08:49:33.000Z",
      "distro": "noble",
      "commit": "faa97fd860949c00a7234c7c269c386937a41ff0",
      "fileid": "29366d5e151b40edc49cd7a8d0155df372f7b7751d34bbc9101f05167132423d",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/flxzimmer/actions/runs/27004903296"
    },
    {
      "r": "4.5.3",
      "os": "mac",
      "version": "1.0.3.9000",
      "date": "2026-06-05T08:49:02.000Z",
      "commit": "faa97fd860949c00a7234c7c269c386937a41ff0",
      "fileid": "8fec3ed90af35006e23561082e1b30bb29546f9370fff84fea7856489379cf05",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/flxzimmer/actions/runs/27004903296"
    },
    {
      "r": "4.6.0",
      "os": "mac",
      "version": "1.0.3.9000",
      "date": "2026-06-05T08:49:05.000Z",
      "commit": "faa97fd860949c00a7234c7c269c386937a41ff0",
      "fileid": "d090774d4db120fd14bee8117f746b2f4828cd02aa2cf8bdbd01fbd80ea37260",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/flxzimmer/actions/runs/27004903296"
    },
    {
      "r": "4.6.0",
      "os": "wasm",
      "version": "1.0.3.9000",
      "date": "2026-06-05T08:49:26.000Z",
      "commit": "faa97fd860949c00a7234c7c269c386937a41ff0",
      "fileid": "f7fed733c2239b0721c1d35fd6a570c6b6930c3c42e1b53f15a1c7adda1c14a6",
      "status": "success",
      "buildurl": "https://github.com/r-universe/flxzimmer/actions/runs/27004903296"
    },
    {
      "r": "4.7.0",
      "os": "win",
      "version": "1.0.3.9000",
      "date": "2026-06-05T08:48:18.000Z",
      "commit": "faa97fd860949c00a7234c7c269c386937a41ff0",
      "fileid": "5725d7bf30274ba81a055d043b66ab84f684abae10fc34d7cb62df9199dda37b",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/flxzimmer/actions/runs/27004903296"
    },
    {
      "r": "4.5.3",
      "os": "win",
      "version": "1.0.3.9000",
      "date": "2026-06-05T08:48:26.000Z",
      "commit": "faa97fd860949c00a7234c7c269c386937a41ff0",
      "fileid": "4db26370381bf319137b12d8ba4decf73c5c42a4a075b2ef77feccd81ed3f662",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/flxzimmer/actions/runs/27004903296"
    },
    {
      "r": "4.6.0",
      "os": "win",
      "version": "1.0.3.9000",
      "date": "2026-06-05T08:48:24.000Z",
      "commit": "faa97fd860949c00a7234c7c269c386937a41ff0",
      "fileid": "a55902bf9f999356dbb1302469a92e433db3672e3c0f85b08fb4d9775bebe1c1",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/flxzimmer/actions/runs/27004903296"
    }
  ]
}