{
  "_id": "6ab37ef53d719c1f8409011f",
  "Package": "L2hdchange",
  "Type": "Package",
  "Date": "2023-07-19",
  "Title": "L2 Inference for Change Points in High-Dimensional Time Series",
  "Version": "1.0",
  "Authors@R": "c(\nperson(\"Jiaqi\", \"Li\", email = \"lijiaqi@wustl.edu\", role = \"aut\"),\nperson(\"Likai\", \"Chen\", email = \"likai.chen@wustl.edu\", role = \"aut\"),\nperson(\"Weining\", \"Wang\", email = \"weining.wang@york.ac.uk\", role = \"aut\"),\nperson(\"Wei Biao\", \"Wu\", email = \"wbwu@galton.uchicago.edu\", role = \"aut\"),\nperson(\"Rui\", \"Lin\", email = \"ruilin1081@gmail.com\", role = \"cre\"))",
  "Maintainer": "Rui Lin <ruilin1081@gmail.com>",
  "Description": "Provides a method for detecting multiple change points in\nhigh-dimensional time series, targeting dense or spatially\nclustered signals. See Li et al. (2023) \"L2 Inference for\nChange Points in High-Dimensional Time Series via a Two-Way\nMOSUM\". arXiv preprint <arXiv:2208.13074>.",
  "License": "GPL (>= 3)",
  "Encoding": "UTF-8",
  "LazyData": "true",
  "RoxygenNote": "7.2.3",
  "NeedsCompilation": "no",
  "Packaged": {
    "Date": "2026-09-23 06:57:14 UTC",
    "User": "root"
  },
  "Author": "Jiaqi Li [aut], Likai Chen [aut], Weining Wang [aut], Wei Biao\nWu [aut], Rui Lin [cre]",
  "Repository": "https://rl1081.r-universe.dev",
  "Date/Publication": "2023-07-20 12:49:29 UTC",
  "RemoteUrl": "https://github.com/cran/L2hdchange",
  "RemoteRef": "HEAD",
  "RemoteSha": "0d5b8eb6bed031ba6e18290f3a27f0947a113e38",
  "_user": "rl1081",
  "_type": "src",
  "_file": "L2hdchange_1.0.tar.gz",
  "_fileid": "https://r2.ropensci.org/8d78d48319fb9545564740958c003aa29903f2194b371c8dfe4e87bea5c96c96",
  "_filesize": 505718,
  "_sha256": "8d78d48319fb9545564740958c003aa29903f2194b371c8dfe4e87bea5c96c96",
  "_expires": "2027-01-01T07:25:39.000Z",
  "_created": "2026-09-23T06:57:14.000Z",
  "_published": "2026-09-23T07:25:41.896Z",
  "_jobs": [
    {
      "job": 107077752253,
      "time": 121,
      "config": "linux-devel-x86_64",
      "r": "4.7.0",
      "check": "OK",
      "artifact": "10736401651"
    },
    {
      "job": 107077752261,
      "time": 119,
      "config": "linux-release-x86_64",
      "r": "4.6.1",
      "check": "OK",
      "artifact": "10736143087"
    },
    {
      "job": 107077752334,
      "time": 167,
      "config": "macos-oldrel-arm64",
      "r": "4.5.3",
      "check": "OK",
      "artifact": "10737745069"
    },
    {
      "job": 107077752364,
      "time": 200,
      "config": "macos-release-arm64",
      "r": "4.6.1",
      "check": "OK",
      "artifact": "10737412423"
    },
    {
      "job": 107077065692,
      "time": 157,
      "config": "source",
      "r": "4.6.1",
      "check": "OK",
      "artifact": "10736232277"
    },
    {
      "job": 107077752411,
      "time": 94,
      "config": "wasm-release",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "10736421535"
    },
    {
      "job": 107077752291,
      "time": 79,
      "config": "windows-devel-x86_64",
      "r": "4.7.0",
      "check": "OK",
      "artifact": "10736317093"
    },
    {
      "job": 107077752292,
      "time": 69,
      "config": "windows-oldrel-x86_64",
      "r": "4.5.3",
      "check": "OK",
      "artifact": "10736043417"
    },
    {
      "job": 107077752418,
      "time": 78,
      "config": "windows-release-x86_64",
      "r": "4.6.1",
      "check": "OK",
      "artifact": "10736431407"
    }
  ],
  "_host": "GitHub-Actions",
  "_buildurl": "https://github.com/r-universe/rl1081/actions/runs/35828974466",
  "_status": "success",
  "_upstream": "https://github.com/cran/L2hdchange",
  "_commit": {
    "id": "0d5b8eb6bed031ba6e18290f3a27f0947a113e38",
    "author": "Rui Lin <ruilin1081@gmail.com>",
    "committer": "cran-robot <csardi.gabor+cran@gmail.com>",
    "message": "version 1.0\n",
    "time": 1689857369
  },
  "_maintainer": {
    "name": "Rui Lin",
    "email": "ruilin1081@gmail.com",
    "login": "rl1081",
    "description": "Lecturer at School of Finance, SWUFE, Chengdu",
    "uuid": 143361544
  },
  "_distro": "resolute",
  "_registered": true,
  "_dependencies": [
    {
      "package": "R",
      "version": ">= 2.10",
      "role": "Depends"
    }
  ],
  "_owner": "cran",
  "_selfowned": true,
  "_usedby": 0,
  "_updates": [],
  "_tags": [],
  "_stars": 1,
  "_contributors": [
    {
      "user": "rl1081",
      "count": 1,
      "uuid": 143361544
    }
  ],
  "_userbio": {
    "uuid": 143361544,
    "type": "user",
    "name": "Rui Lin",
    "followers": 0,
    "description": "Lecturer at School of Finance, SWUFE, Chengdu"
  },
  "_downloads": {
    "count": 147,
    "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/L2hdchange"
  },
  "_searchresults": 1,
  "_rbuild": "4.6.1",
  "_assets": [
    "extra/citation.cff",
    "extra/citation.html",
    "extra/citation.json",
    "extra/citation.txt",
    "extra/contents.json",
    "extra/L2hdchange.html",
    "extra/manual.pdf"
  ],
  "_realowner": "rl1081",
  "_cranurl": false,
  "_releases": [
    {
      "version": "1.0",
      "date": "2023-07-20"
    }
  ],
  "_exports": [
    "check_nbd",
    "est_hdchange",
    "genZ",
    "get_breaks",
    "get_cov_x_MAinf",
    "get_critical",
    "get_GS_MAinf",
    "get_lr_var",
    "get_teststats",
    "get_V_l2_MAinf",
    "hdchange",
    "plot_result",
    "sim_hdchange_nbd",
    "sim_hdchange_no_nbd",
    "test_existence",
    "ts_hdchange"
  ],
  "_datasets": [
    {
      "name": "covid_data",
      "title": "U.S. COVID-19 Data",
      "object": "covid_data",
      "class": [
        "matrix",
        "array"
      ],
      "fields": [],
      "rows": 58,
      "table": true,
      "tojson": true
    },
    {
      "name": "covid_nbd_info",
      "title": "U.S. COVID-19 Data Neighbourhood Information",
      "object": "covid_nbd_info",
      "class": [
        "list"
      ],
      "fields": [],
      "table": false,
      "tojson": true
    }
  ],
  "_help": [
    {
      "page": "check_nbd",
      "title": "Check the validity of the neighbourhood specification",
      "topics": [
        "check_nbd"
      ]
    },
    {
      "page": "covid_data",
      "title": "U.S. COVID-19 Data",
      "topics": [
        "covid_data"
      ]
    },
    {
      "page": "covid_nbd_info",
      "title": "U.S. COVID-19 Data Neighbourhood Information",
      "topics": [
        "covid_nbd_info"
      ]
    },
    {
      "page": "est_hdchange",
      "title": "Construct an S3 class 'no_nbd' or 'nbd' for change-point estimation",
      "topics": [
        "est_hdchange"
      ]
    },
    {
      "page": "genZ",
      "title": "Generate a random Gaussian vector",
      "topics": [
        "genZ"
      ]
    },
    {
      "page": "get_breaks",
      "title": "Obtain the time-stamps and spatial locations with breaks",
      "topics": [
        "get_breaks"
      ]
    },
    {
      "page": "get_breaks.nbd",
      "title": "Obtain the time-stamps and spatial locations with breaks",
      "topics": [
        "get_breaks.nbd"
      ]
    },
    {
      "page": "get_breaks.no_nbd",
      "title": "Obtain the time-stamps and spatial locations without break",
      "topics": [
        "get_breaks.no_nbd"
      ]
    },
    {
      "page": "get_cov_x_MAinf",
      "title": "The covariance matrix for generating random Gaussian vector",
      "topics": [
        "get_cov_x_MAinf"
      ]
    },
    {
      "page": "get_critical",
      "title": "Obtain critical values and threshold",
      "topics": [
        "get_critical"
      ]
    },
    {
      "page": "get_critical.nbd",
      "title": "Obtain critical values and threshold",
      "topics": [
        "get_critical.nbd"
      ]
    },
    {
      "page": "get_critical.no_nbd",
      "title": "Obtain critical values and threshold",
      "topics": [
        "get_critical.no_nbd"
      ]
    },
    {
      "page": "get_GS_MAinf",
      "title": "Obtain the simulated standardised gap vector",
      "topics": [
        "get_GS_MAinf"
      ]
    },
    {
      "page": "get_GS_MAinf.nbd",
      "title": "Obtain the simulated standardised gap vector",
      "topics": [
        "get_GS_MAinf.nbd"
      ]
    },
    {
      "page": "get_GS_MAinf.no_nbd",
      "title": "Obtain the simulated standardised gap vector",
      "topics": [
        "get_GS_MAinf.no_nbd"
      ]
    },
    {
      "page": "get_lr_var",
      "title": "Compute the long-run variance of the gap vector",
      "topics": [
        "get_lr_var"
      ]
    },
    {
      "page": "get_teststats",
      "title": "Obtain the test statistics",
      "topics": [
        "get_teststats"
      ]
    },
    {
      "page": "get_teststats.nbd",
      "title": "Obtain the test statistics",
      "topics": [
        "get_teststats.nbd"
      ]
    },
    {
      "page": "get_teststats.no_nbd",
      "title": "Obtain the test statistics",
      "topics": [
        "get_teststats.no_nbd"
      ]
    },
    {
      "page": "get_V_l2_MAinf",
      "title": "Obtain the standardised gap vector",
      "topics": [
        "get_V_l2_MAinf"
      ]
    },
    {
      "page": "get_V_l2_MAinf.nbd",
      "title": "Obtain the standardised gap vector",
      "topics": [
        "get_V_l2_MAinf.nbd"
      ]
    },
    {
      "page": "get_V_l2_MAinf.no_nbd",
      "title": "Obtain the standardised gap vector",
      "topics": [
        "get_V_l2_MAinf.no_nbd"
      ]
    },
    {
      "page": "hdchange",
      "title": "Estimate the time-stamps and spatial locations with breaks",
      "topics": [
        "hdchange"
      ]
    },
    {
      "page": "plot_result",
      "title": "Plot the time series and change-points",
      "topics": [
        "plot_result"
      ]
    },
    {
      "page": "plot_result.result_nbd",
      "title": "Plot the time series and change-points",
      "topics": [
        "plot_result.result_nbd"
      ]
    },
    {
      "page": "plot_result.result_no_nbd",
      "title": "Plot the time series and change-points",
      "topics": [
        "plot_result.result_no_nbd"
      ]
    },
    {
      "page": "sim_hdchange_nbd",
      "title": "Simulate data with neighbourhood",
      "topics": [
        "sim_hdchange_nbd"
      ]
    },
    {
      "page": "sim_hdchange_no_nbd",
      "title": "Simulate data without neighbourhood",
      "topics": [
        "sim_hdchange_no_nbd"
      ]
    },
    {
      "page": "summary.result_nbd",
      "title": "Summarize the estimation results",
      "topics": [
        "summary.result_nbd"
      ]
    },
    {
      "page": "summary.result_no_nbd",
      "title": "Summarize the estimation results",
      "topics": [
        "summary.result_no_nbd"
      ]
    },
    {
      "page": "test_existence",
      "title": "Test the existence of change-points in the data",
      "topics": [
        "test_existence"
      ]
    },
    {
      "page": "ts_hdchange",
      "title": "'no_nbd' or 'nbd' object construction",
      "topics": [
        "ts_hdchange"
      ]
    }
  ],
  "_rundeps": [],
  "_score": 1,
  "_indexed": true,
  "_nocasepkg": "l2hdchange",
  "_universes": [
    "rl1081"
  ],
  "_binaries": [
    {
      "r": "4.7.0",
      "os": "linux",
      "version": "1.0",
      "date": "2026-09-23T06:59:06.000Z",
      "distro": "resolute",
      "commit": "0d5b8eb6bed031ba6e18290f3a27f0947a113e38",
      "fileid": "https://r2.ropensci.org/ed4dc538074ad01319791a9cf292d3579d7459e7c92e2e84a68f8d0248965b48",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/rl1081/actions/runs/35828974466"
    },
    {
      "r": "4.6.1",
      "os": "linux",
      "version": "1.0",
      "date": "2026-09-23T06:59:04.000Z",
      "distro": "resolute",
      "commit": "0d5b8eb6bed031ba6e18290f3a27f0947a113e38",
      "fileid": "https://r2.ropensci.org/afbbc7fe31f95715cebaa07314c6b12b81c657ed52f9a3c75c7ba573f0836013",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/rl1081/actions/runs/35828974466"
    },
    {
      "r": "4.5.3",
      "os": "mac",
      "version": "1.0",
      "date": "2026-09-23T07:20:42.000Z",
      "commit": "0d5b8eb6bed031ba6e18290f3a27f0947a113e38",
      "fileid": "https://r2.ropensci.org/b1c0019ff31a7af3c07f9146cb92b53e3d1f4ac4970fd02fd8338ec6a3e0607f",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/rl1081/actions/runs/35828974466"
    },
    {
      "r": "4.6.1",
      "os": "mac",
      "version": "1.0",
      "date": "2026-09-23T07:23:54.000Z",
      "commit": "0d5b8eb6bed031ba6e18290f3a27f0947a113e38",
      "fileid": "https://r2.ropensci.org/d9fd9bf73a55fbf123fa251cafb99149aefb5752905a1758c0f886d1c99b3651",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/rl1081/actions/runs/35828974466"
    },
    {
      "r": "4.6.0",
      "os": "wasm",
      "version": "1.0",
      "date": "2026-09-23T06:59:04.000Z",
      "commit": "0d5b8eb6bed031ba6e18290f3a27f0947a113e38",
      "fileid": "https://r2.ropensci.org/d8802352ff639cd22169a6ad8f36cbfb80807bcfe26177efa2ba07f8e4a698f3",
      "status": "success",
      "buildurl": "https://github.com/r-universe/rl1081/actions/runs/35828974466"
    },
    {
      "r": "4.7.0",
      "os": "win",
      "version": "1.0",
      "date": "2026-09-23T06:58:17.000Z",
      "commit": "0d5b8eb6bed031ba6e18290f3a27f0947a113e38",
      "fileid": "https://r2.ropensci.org/09e4e70d79bd2b4654c6abe2260699f17c55ae0ca21fb272e98eaea58d1bc3a7",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/rl1081/actions/runs/35828974466"
    },
    {
      "r": "4.5.3",
      "os": "win",
      "version": "1.0",
      "date": "2026-09-23T06:58:07.000Z",
      "commit": "0d5b8eb6bed031ba6e18290f3a27f0947a113e38",
      "fileid": "https://r2.ropensci.org/0ae0054c6fd84a0c49b2926e0c7731961d7364f66bb10d20a764dc90786156da",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/rl1081/actions/runs/35828974466"
    },
    {
      "r": "4.6.1",
      "os": "win",
      "version": "1.0",
      "date": "2026-09-23T06:58:14.000Z",
      "commit": "0d5b8eb6bed031ba6e18290f3a27f0947a113e38",
      "fileid": "https://r2.ropensci.org/5baa2ea9ed8942674b5b6f6c1de2d7255eac23581477b7459c17eb4fd6f1a340",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/rl1081/actions/runs/35828974466"
    }
  ]
}