{
  "_id": "6a1ee523b401979e734112b3",
  "Package": "QR.break",
  "Title": "Structural Breaks in Quantile Regression",
  "Version": "1.0.2",
  "Authors@R": "c(\nperson(\"Zhongjun\", \"Qu\", , \"qu@bu.edu\", role = c(\"aut\", \"cre\")),\nperson(\"Tatsushi\", \"Oka\", , \"oka.econ@gmail.com\", role = \"aut\"),\nperson(\"Samuel\", \"Messer\", , \"snmesser@bu.edu\", role = \"ctb\")\n)",
  "Maintainer": "Zhongjun Qu <qu@bu.edu>",
  "Description": "Methods for detecting structural breaks, determining the\nnumber of breaks, and estimating break locations in linear\nquantile regression, using one or multiple quantiles, based on\nQu (2008) and Oka and Qu (2011).  Applicable to both time\nseries and repeated cross-sectional data. The main function is\nrq.break().\n.\nReferences for detailed theoretical and empirical explanations:\n.\n(1) Qu, Z. (2008).  \"Testing for Structural Change in Regression\nQuantiles.\"  Journal of Econometrics, 146(1), 170-184\n<doi:10.1016/j.jeconom.2008.08.006>\n.\n(2) Oka, T., and Qu, Z. (2011).  \"Estimating Structural Changes in\nRegression Quantiles.\"  Journal of Econometrics, 162(2),\n248-267 <doi:10.1016/j.jeconom.2011.01.005>.",
  "License": "GPL (>= 3)",
  "Encoding": "UTF-8",
  "NeedsCompilation": "no",
  "RoxygenNote": "7.3.2",
  "LazyData": "true",
  "Packaged": {
    "Date": "2026-05-20 06:05:37 UTC",
    "User": "root"
  },
  "Author": "Zhongjun Qu [aut, cre], Tatsushi Oka [aut], Samuel Messer [ctb]",
  "Repository": "https://zhongjun-qu.r-universe.dev",
  "Date/Publication": "2025-04-23 18:44:55 UTC",
  "RemoteUrl": "https://github.com/cran/QR.break",
  "RemoteRef": "HEAD",
  "RemoteSha": "c01005bb25b240748b1461b7d6c3c34e95f8f798",
  "MD5sum": "e70fd1f58a9d29ba9d7e7b4dea8885c5",
  "_user": "zhongjun-qu",
  "_type": "src",
  "_file": "QR.break_1.0.2.tar.gz",
  "_fileid": "b2c9c1d212c101eea8b8de0772b2569227c0877f938ddebfa0b266adda92857d",
  "_filesize": 235028,
  "_sha256": "b2c9c1d212c101eea8b8de0772b2569227c0877f938ddebfa0b266adda92857d",
  "_created": "2026-05-20T06:05:37.000Z",
  "_published": "2026-06-02T14:13:55.918Z",
  "_distro": "noble",
  "_jobs": [
    {
      "job": 79091249640,
      "time": 135,
      "config": "linux-devel-x86_64",
      "r": "4.7.0",
      "check": "OK",
      "artifact": "7102491324"
    },
    {
      "job": 79091250412,
      "time": 120,
      "config": "linux-release-x86_64",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7102487929"
    },
    {
      "job": 79091249440,
      "time": 200,
      "config": "macos-oldrel-arm64",
      "r": "4.5.3",
      "check": "OK",
      "artifact": "7102497408"
    },
    {
      "job": 79091248798,
      "time": 151,
      "config": "macos-release-arm64",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7102487754"
    },
    {
      "job": 79091247959,
      "time": 131,
      "config": "source",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7102460014"
    },
    {
      "job": 79091248062,
      "time": 116,
      "config": "wasm-release",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7360192964"
    },
    {
      "job": 79091249403,
      "time": 103,
      "config": "windows-devel",
      "r": "4.7.0",
      "check": "OK",
      "artifact": "7102484552"
    },
    {
      "job": 79091249700,
      "time": 81,
      "config": "windows-oldrel",
      "r": "4.5.3",
      "check": "OK",
      "artifact": "7102479297"
    },
    {
      "job": 79091249341,
      "time": 100,
      "config": "windows-release",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7102483632"
    }
  ],
  "_buildurl": "https://github.com/r-universe/zhongjun-qu/actions/runs/26144581404",
  "_status": "success",
  "_host": "GitHub-Actions",
  "_upstream": "https://github.com/cran/QR.break",
  "_commit": {
    "id": "c01005bb25b240748b1461b7d6c3c34e95f8f798",
    "author": "Zhongjun Qu <qu@bu.edu>",
    "committer": "cran-robot <csardi.gabor+cran@gmail.com>",
    "message": "version 1.0.2\n",
    "time": 1745433895
  },
  "_maintainer": {
    "name": "Zhongjun Qu",
    "email": "qu@bu.edu",
    "login": "zhongjun-qu",
    "description": "",
    "uuid": 92643912
  },
  "_registered": true,
  "_dependencies": [
    {
      "package": "R",
      "version": ">= 4.3.0",
      "role": "Depends"
    },
    {
      "package": "quantreg",
      "role": "Imports"
    },
    {
      "package": "SparseM",
      "role": "Suggests"
    }
  ],
  "_owner": "cran",
  "_selfowned": true,
  "_usedby": 0,
  "_updates": [],
  "_tags": [],
  "_stars": 1,
  "_contributors": [
    {
      "user": "zhongjun-qu",
      "count": 2,
      "uuid": 92643912
    }
  ],
  "_userbio": {
    "uuid": 92643912,
    "type": "user",
    "name": "Zhongjun-Qu"
  },
  "_downloads": {
    "count": 557,
    "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/QR.break"
  },
  "_searchresults": 0,
  "_rbuild": "4.6.0",
  "_assets": [
    "extra/citation.cff",
    "extra/citation.html",
    "extra/citation.json",
    "extra/citation.txt",
    "extra/contents.json",
    "extra/NEWS.html",
    "extra/NEWS.txt",
    "extra/QR.break.html",
    "extra/readme.html",
    "extra/readme.md",
    "manual.pdf"
  ],
  "_realowner": "zhongjun-qu",
  "_cranurl": false,
  "_releases": [
    {
      "version": "1.0.1",
      "date": "2025-04-07"
    },
    {
      "version": "1.0.2",
      "date": "2025-04-23"
    }
  ],
  "_exports": [
    "brdate",
    "ci.date.m",
    "dq",
    "dq.test.0vs1",
    "dq.test.lvsl_1",
    "gen.long",
    "res.surface",
    "rq.break",
    "rq.est.full",
    "rq.est.regime",
    "sq",
    "sq.test.0vs1",
    "sq.test.lvsl_1"
  ],
  "_datasets": [
    {
      "name": "driver",
      "title": "The Dataset for Young Drivers",
      "object": "driver",
      "class": [
        "data.frame"
      ],
      "fields": [
        "yq",
        "bac",
        "age",
        "gender",
        "winter"
      ],
      "rows": 10800,
      "table": true,
      "tojson": true
    },
    {
      "name": "gdp",
      "title": "US Real GDP Growth Data",
      "object": "gdp",
      "class": [
        "data.frame"
      ],
      "fields": [
        "yq",
        "gdp",
        "lag1",
        "lag2"
      ],
      "rows": 247,
      "table": true,
      "tojson": true
    }
  ],
  "_help": [
    {
      "page": "brdate",
      "title": "Estimating Break Dates in a Quantile Regression",
      "topics": [
        "brdate"
      ]
    },
    {
      "page": "ci.date.m",
      "title": "Confidence Intervals for Break Dates",
      "topics": [
        "ci.date.m"
      ]
    },
    {
      "page": "dq",
      "title": "Sequential Determination of the Number of Breaks Using the DQ Test",
      "topics": [
        "dq"
      ]
    },
    {
      "page": "dq.test.0vs1",
      "title": "Test for the Presence of a Break within a Range of Quantiles",
      "topics": [
        "dq.test.0vs1"
      ]
    },
    {
      "page": "dq.test.lvsl_1",
      "title": "Sequential Test for Additional Breaks within a Range of Quantiles",
      "topics": [
        "dq.test.lvsl_1"
      ]
    },
    {
      "page": "driver",
      "title": "The Dataset for Young Drivers",
      "topics": [
        "driver"
      ]
    },
    {
      "page": "gdp",
      "title": "US Real GDP Growth Data",
      "topics": [
        "gdp"
      ]
    },
    {
      "page": "gen.long",
      "title": "Dynamic Programming Algorithm",
      "topics": [
        "gen.long"
      ]
    },
    {
      "page": "res.surface",
      "title": "Compute Critical Values for the DQ test using a Response Surface",
      "topics": [
        "res.surface"
      ]
    },
    {
      "page": "rq.break",
      "title": "Testing for Breaks and Estimating Break Dates and Sizes with Confidence Intervals",
      "topics": [
        "rq.break"
      ]
    },
    {
      "page": "rq.est.full",
      "title": "Estimating Break Sizes and Confidence Intervals Given Break Dates",
      "topics": [
        "rq.est.full"
      ]
    },
    {
      "page": "rq.est.regime",
      "title": "Regime-Specific Coefficients and Confidence Intervals Given Break Dates",
      "topics": [
        "rq.est.regime"
      ]
    },
    {
      "page": "sq",
      "title": "Determine the Number of Breaks Using the SQ(l|l+1) Test",
      "topics": [
        "sq"
      ]
    },
    {
      "page": "sq.test.0vs1",
      "title": "Test for a Structural Break in a Conditional Quantile",
      "topics": [
        "sq.test.0vs1"
      ]
    },
    {
      "page": "sq.test.lvsl_1",
      "title": "Sequential Test for an Additional Break in a Conditional Quantile",
      "topics": [
        "sq.test.lvsl_1"
      ]
    }
  ],
  "_readme": "https://github.com/cran/QR.break/raw/HEAD/README.md",
  "_rundeps": [
    "lattice",
    "MASS",
    "Matrix",
    "MatrixModels",
    "quantreg",
    "SparseM",
    "survival"
  ],
  "_score": 1.6989700043360187,
  "_indexed": true,
  "_nocasepkg": "qr.break",
  "_universes": [
    "zhongjun-qu"
  ],
  "_binaries": [
    {
      "r": "4.7.0",
      "os": "linux",
      "version": "1.0.2",
      "date": "2026-05-20T06:07:36.000Z",
      "distro": "noble",
      "commit": "c01005bb25b240748b1461b7d6c3c34e95f8f798",
      "fileid": "1c0772dcc9bf3582c8f3630c92640176bcdb8feee6474a993c1298d9e50ddb71",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/zhongjun-qu/actions/runs/26144581404"
    },
    {
      "r": "4.6.0",
      "os": "linux",
      "version": "1.0.2",
      "date": "2026-05-20T06:07:24.000Z",
      "distro": "noble",
      "commit": "c01005bb25b240748b1461b7d6c3c34e95f8f798",
      "fileid": "6b4eb8d85409714d8bafe2714f894bce12cb6f5b72be467de3dcc1bf2d354ed2",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/zhongjun-qu/actions/runs/26144581404"
    },
    {
      "r": "4.5.3",
      "os": "mac",
      "version": "1.0.2",
      "date": "2026-05-20T06:08:05.000Z",
      "commit": "c01005bb25b240748b1461b7d6c3c34e95f8f798",
      "fileid": "9989985807c8e3c448bc3138163f676ad78cc6760b6b8d90fe9ac6bc3942e531",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/zhongjun-qu/actions/runs/26144581404"
    },
    {
      "r": "4.6.0",
      "os": "mac",
      "version": "1.0.2",
      "date": "2026-05-20T06:07:31.000Z",
      "commit": "c01005bb25b240748b1461b7d6c3c34e95f8f798",
      "fileid": "974e5a596c4f71a9059e91b571b2e1b2fa45dc7c2e8e37a08da3d0cdac63ebf3",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/zhongjun-qu/actions/runs/26144581404"
    },
    {
      "r": "4.7.0",
      "os": "win",
      "version": "1.0.2",
      "date": "2026-05-20T06:07:04.000Z",
      "commit": "c01005bb25b240748b1461b7d6c3c34e95f8f798",
      "fileid": "e80a85c7cf7e76a8b144e70ea74e4cd492d08ad8179bada558d9a20f3d275367",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/zhongjun-qu/actions/runs/26144581404"
    },
    {
      "r": "4.5.3",
      "os": "win",
      "version": "1.0.2",
      "date": "2026-05-20T06:06:42.000Z",
      "commit": "c01005bb25b240748b1461b7d6c3c34e95f8f798",
      "fileid": "4d0874c2d9bbffbc92e8ad8232349e612edff53f105cc646dbe6805eba0ad636",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/zhongjun-qu/actions/runs/26144581404"
    },
    {
      "r": "4.6.0",
      "os": "win",
      "version": "1.0.2",
      "date": "2026-05-20T06:06:45.000Z",
      "commit": "c01005bb25b240748b1461b7d6c3c34e95f8f798",
      "fileid": "4e83fccaf79b560538289298e70c934651eb0c1452f671eabfe44ef6336931cb",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/zhongjun-qu/actions/runs/26144581404"
    },
    {
      "r": "4.6.0",
      "os": "wasm",
      "version": "1.0.2",
      "date": "2026-06-02T14:12:36.000Z",
      "commit": "c01005bb25b240748b1461b7d6c3c34e95f8f798",
      "fileid": "b71d624ee0f054b29861c7c7e81a64849ac5769d8321481ad2b692cc045dad3b",
      "status": "success",
      "buildurl": "https://github.com/r-universe/zhongjun-qu/actions/runs/26144581404"
    }
  ]
}