{ "_id": "6ab544ddc18b73ce90b4f934", "Package": "regstat", "Title": "An Exact Test for a Change in Covariance (Dependence) Structure", "Version": "0.1.0", "Authors@R": "person(\"M. Theodor\", \"Loots\", role = c(\"aut\", \"cre\"),\nemail = \"theo.loots@gmail.com\",\ncomment = c(ORCID = \"0000-0001-7722-3913\"))", "Description": "An exact finite-sample test for whether two groups share a\ncovariance matrix, the omnibus form of the differential-network\nquestion. Under the Gaussian null the likelihood-ratio\nstatistic has a distribution given by the real Jacobi ensemble\nthat is free of the unknown common covariance, so a single\nMonte-Carlo calibration at the identity serves every covariance\nwith no estimate of the nuisance covariance; this is the\nproperty that survives the dimension barrier, where estimating\nthe covariance is hardest. The max-type high-dimensional test\nof Cai, Liu and Xia (2013) \nis provided for comparison. A pure-C back-end does the numerics\nand also backs the 'Python' package 'regstat'.", "URL": "https://github.com/mtloots/regstat", "BugReports": "https://github.com/mtloots/regstat/issues", "License": "GPL-3", "Encoding": "UTF-8", "NeedsCompilation": "yes", "Config/roxygen2/version": "8.0.0", "Config/testthat/edition": "3", "VignetteBuilder": "knitr", "Packaged": { "Date": "2026-09-24 15:38:28 UTC", "User": "root" }, "Author": "M. Theodor Loots [aut, cre] (ORCID:\n)", "Maintainer": "M. Theodor Loots ", "Repository": "https://cran.r-universe.dev", "Date/Publication": "2026-09-24 15:18:32 UTC", "RemoteUrl": "https://github.com/cran/regstat", "RemoteRef": "HEAD", "RemoteSha": "90b134a86021b10e442ea19f1c484c75fe7c2ca7", "_user": "cran", "_type": "src", "_file": "regstat_0.1.0.tar.gz", "_fileid": "https://r2.ropensci.org/48d5552696c8f26f3393d70370835bf75a4975ca1cc1ef222ebbdf28a52ce02b", "_filesize": 161400, "_sha256": "48d5552696c8f26f3393d70370835bf75a4975ca1cc1ef222ebbdf28a52ce02b", "_expires": "2027-01-02T15:42:19.000Z", "_created": "2026-09-24T15:38:28.000Z", "_published": "2026-09-24T15:42:21.866Z", "_jobs": [ { "job": 107707865155, "time": 175, "config": "linux-devel-arm64", "r": "4.7.0", "check": "OK", "artifact": "10817391349" }, { "job": 107707865298, "time": 129, "config": "linux-devel-x86_64", "r": "4.7.0", "check": "OK", "artifact": "10817027385" }, { "job": 107707865245, "time": 106, "config": "linux-release-arm64", "r": "4.6.1", "check": "OK", "artifact": "10817386355" }, { "job": 107707865249, "time": 127, "config": "linux-release-x86_64", "r": "4.6.1", "check": "OK", "artifact": "10817012091" }, { "job": 107706591698, "time": 191, "config": "source", "r": "4.6.1", "check": "OK", "artifact": "10817765397" }, { "job": 107707865383, "time": 139, "config": "wasm-release", "r": "4.6.0", "check": "OK", "artifact": "10816748111" }, { "job": 107707865149, "time": 197, "config": "windows-devel-arm64", "r": "4.7.0", "check": "OK", "artifact": "10816608466" }, { "job": 107707865254, "time": 126, "config": "windows-devel-x86_64", "r": "4.7.0", "check": "OK", "artifact": "10817166465" }, { "job": 107707865145, "time": 172, "config": "windows-release-arm64", "r": "4.6.1", "check": "OK", "artifact": "10817725034" }, { "job": 107707865158, "time": 87, "config": "windows-release-x86_64", "r": "4.6.1", "check": "OK", "artifact": "10816917575" } ], "_host": "GitHub-Actions", "_buildurl": "https://github.com/r-universe/cran/actions/runs/36020878246", "_status": "success", "_upstream": "https://github.com/cran/regstat", "_commit": { "id": "90b134a86021b10e442ea19f1c484c75fe7c2ca7", "author": "M. Theodor Loots ", "committer": "cran-robot ", "message": "version 0.1.0\n", "time": 1790263112 }, "_maintainer": { "name": "M. Theodor Loots", "email": "theo.loots@gmail.com", "login": "mtloots", "description": "", "uuid": 19597341, "orcid": "0000-0001-7722-3913" }, "_distro": "resolute", "_registered": true, "_dependencies": [ { "package": "stats", "role": "Imports" }, { "package": "knitr", "role": "Suggests" }, { "package": "rmarkdown", "role": "Suggests" }, { "package": "testthat", "version": ">= 3.0.0", "role": "Suggests" } ], "_owner": "cran", "_selfowned": false, "_usedby": 0, "_updates": [ { "week": "2026-39", "n": 1 } ], "_tags": [ { "name": "0.1.0", "date": "2026-09-24" } ], "_stars": 0, "_contributors": [ { "user": "mtloots", "count": 1, "uuid": 19597341 } ], "_userbio": { "uuid": 6899542, "type": "organization", "name": "cran", "followers": 630, "description": "Unofficial read-only mirror of all CRAN R packages" }, "_downloads": { "count": 0, "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/regstat" }, "_devurl": "https://github.com/mtloots/regstat", "_rbuild": "4.6.1", "_assets": [ "extra/citation.cff", "extra/citation.html", "extra/citation.json", "extra/citation.txt", "extra/contents.json", "extra/manual.pdf", "extra/NEWS.html", "extra/NEWS.txt", "extra/readme.html", "extra/readme.md", "extra/regstat.html" ], "_cranurl": false, "_exports": [ "clx_stat", "clx_test", "cov_logdiff", "cov_M", "cov_null", "cov_pdet", "cov_pexact", "cov_powdet", "cov_test", "diffnet_test" ], "_help": [ { "page": "clx_stat", "title": "Cai-Liu-Xia max-type covariance statistic (C back-end)", "topics": [ "clx_stat" ] }, { "page": "clx_test", "title": "Max-type two-sample covariance test with the extreme-value calibration", "topics": [ "clx_test" ] }, { "page": "cov_logdiff", "title": "Log-domain differential network (C back-end)", "topics": [ "cov_logdiff" ] }, { "page": "cov_M", "title": "Box's M statistic for equality of two covariance matrices (C back-end)", "topics": [ "cov_M" ] }, { "page": "cov_null", "title": "Draws from the covariance-free null of M (C back-end)", "topics": [ "cov_null" ] }, { "page": "cov_pdet", "title": "Exact null of the determinant functional, and exact power against proportional alternatives", "topics": [ "cov_pdet", "cov_powdet" ] }, { "page": "cov_pexact", "title": "Exact right-tail probability of Box's M (C back-end)", "topics": [ "cov_pexact" ] }, { "page": "cov_test", "title": "Exact test for a change in covariance structure", "topics": [ "cov_test" ] }, { "page": "diffnet_test", "title": "Two-sample test for a change in dependence structure via the log-domain contrast", "topics": [ "diffnet_test" ] } ], "_readme": "https://github.com/cran/regstat/raw/HEAD/README.md", "_rundeps": [], "_vignettes": [ { "source": "regstat.Rmd", "filename": "regstat.html", "title": "An exact test for a change in covariance structure", "engine": "knitr::rmarkdown", "headings": [ "The problem", "The null is covariance-free", "An exact p-value", "Differential networks", "Implementation" ], "created": "2026-09-24 15:18:32", "modified": "2026-09-24 15:18:32", "commits": 1 } ], "_score": 2.6989700043360187, "_indexed": false, "_nocasepkg": "regstat", "_universes": [ "cran", "mtloots" ], "_indexurl": "https://mtloots.r-universe.dev/regstat", "_binaries": [ { "r": "4.7.0", "os": "linux", "version": "0.1.0", "date": "2026-09-24T15:41:20.000Z", "distro": "resolute", "arch": "aarch64", "commit": "90b134a86021b10e442ea19f1c484c75fe7c2ca7", "fileid": "https://r2.ropensci.org/dc47f5d3a5aa3f47da5f9ac5705ddd470563bc698797a31862d543bf6dba45c9", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/cran/actions/runs/36020878246" }, { "r": "4.7.0", "os": "linux", "version": "0.1.0", "date": "2026-09-24T15:40:35.000Z", "distro": "resolute", "arch": "x86_64", "commit": "90b134a86021b10e442ea19f1c484c75fe7c2ca7", "fileid": "https://r2.ropensci.org/9060773b19d7c4701cf6eb68982cc4efd4681520c260ea0c3321f27892e56a4e", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/cran/actions/runs/36020878246" }, { "r": "4.6.1", "os": "linux", "version": "0.1.0", "date": "2026-09-24T15:40:20.000Z", "distro": "resolute", "arch": "aarch64", "commit": "90b134a86021b10e442ea19f1c484c75fe7c2ca7", "fileid": "https://r2.ropensci.org/d3d25f2343637422bae1a6f8cd633c7d86fabe699ffce2f97c390cdc476a53a5", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/cran/actions/runs/36020878246" }, { "r": "4.6.1", "os": "linux", "version": "0.1.0", "date": "2026-09-24T15:40:32.000Z", "distro": "resolute", "arch": "x86_64", "commit": "90b134a86021b10e442ea19f1c484c75fe7c2ca7", "fileid": "https://r2.ropensci.org/eb66de6e1b443ba92e1bb31de8b18a6074ba5fa550f569f06785fc2fa376f0bc", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/cran/actions/runs/36020878246" }, { "r": "4.6.0", "os": "wasm", "version": "0.1.0", "date": "2026-09-24T15:41:00.000Z", "arch": "emscripten", "commit": "90b134a86021b10e442ea19f1c484c75fe7c2ca7", "fileid": "https://r2.ropensci.org/8d8b1b9e94d1d88e8573e0da4139a622a554f69fbe729b9a24930c4dfe34134b", "status": "success", "buildurl": "https://github.com/r-universe/cran/actions/runs/36020878246" }, { "r": "4.7.0", "os": "win", "version": "0.1.0", "date": "2026-09-24T15:41:33.000Z", "arch": "aarch64", "commit": "90b134a86021b10e442ea19f1c484c75fe7c2ca7", "fileid": "https://r2.ropensci.org/296d5098faafd751e144d4da115e78e34e404ffa7b79e034cd882391a02b8605", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/cran/actions/runs/36020878246" }, { "r": "4.7.0", "os": "win", "version": "0.1.0", "date": "2026-09-24T15:39:41.000Z", "arch": "x86_64", "commit": "90b134a86021b10e442ea19f1c484c75fe7c2ca7", "fileid": "https://r2.ropensci.org/814ba78587fda7dfbd92dc93fbe3217c2ef84bc6b98f0e948046b4aefae6ca63", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/cran/actions/runs/36020878246" }, { "r": "4.6.1", "os": "win", "version": "0.1.0", "date": "2026-09-24T15:41:12.000Z", "arch": "aarch64", "commit": "90b134a86021b10e442ea19f1c484c75fe7c2ca7", "fileid": "https://r2.ropensci.org/c44338b37f812168363af0486e803244613f3e4631796e71d834861904612455", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/cran/actions/runs/36020878246" }, { "r": "4.6.1", "os": "win", "version": "0.1.0", "date": "2026-09-24T15:39:41.000Z", "arch": "x86_64", "commit": "90b134a86021b10e442ea19f1c484c75fe7c2ca7", "fileid": "https://r2.ropensci.org/d0cfaa1d82afc823ca8c66cac3d6934f090fd46cc420668b567ef4152cc31cca", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/cran/actions/runs/36020878246" } ] }