{ "_id": "6a18dff6acfb0bcc41dcc912", "Package": "mrf2d", "Type": "Package", "Title": "Markov Random Field Models for Image Analysis", "Version": "1.0.2", "Authors@R": "person(\"Victor\", \"Freguglia\", email = \"victorfreguglia@gmail.com\",\nrole = c(\"aut\", \"cre\"),\ncomment = c(ORCID = \"0000-0002-6189-4453\"))", "Maintainer": "Victor Freguglia ", "Description": "Model fitting, sampling and visualization for the (Hidden)\nMarkov Random Field model with pairwise interactions and\ngeneral interaction structure from Freguglia, Garcia & Bicas\n(2020) , which has many popular models\nused in 2-dimensional lattices as particular cases, like the\nIsing Model and Potts Model. A complete manuscript describing\nthe package is available in Freguglia & Garcia (2022)\n.", "License": "GPL-3", "Encoding": "UTF-8", "LazyData": "true", "Roxygen": "list(markdown = TRUE)", "RdMacros": "Rdpack", "RoxygenNote": "7.3.3", "VignetteBuilder": "knitr", "URL": "https://github.com/Freguglia/mrf2d", "BugReports": "https://github.com/Freguglia/mrf2d/issues", "Config/pak/sysreqs": "libicu-dev", "Repository": "https://freguglia.r-universe.dev", "Date/Publication": "2026-05-28 23:51:46 UTC", "RemoteUrl": "https://github.com/freguglia/mrf2d", "RemoteRef": "HEAD", "RemoteSha": "97b3676741057bcab91d20cbf52742e0af095504", "NeedsCompilation": "yes", "Packaged": { "Date": "2026-05-29 00:32:05 UTC", "User": "root" }, "Author": "Victor Freguglia [aut, cre] (ORCID:\n)", "MD5sum": "4966dac96c554b99eaf15fd5ef44cd5f", "_user": "freguglia", "_type": "src", "_file": "mrf2d_1.0.2.tar.gz", "_fileid": "1ec0faaa1af09f5332a5d52f147a19db337482a9310ae0c7a635347c831b951a", "_filesize": 1397752, "_sha256": "1ec0faaa1af09f5332a5d52f147a19db337482a9310ae0c7a635347c831b951a", "_created": "2026-05-29T00:32:05.000Z", "_published": "2026-05-29T00:38:14.710Z", "_distro": "noble", "_jobs": [ { "job": 78415566521, "time": 238, "config": "linux-devel-arm64", "r": "4.7.0", "check": "OK", "artifact": "7280569820" }, { "job": 78415566528, "time": 205, "config": "linux-devel-x86_64", "r": "4.7.0", "check": "OK", "artifact": "7280563103" }, { "job": 78415566621, "time": 228, "config": "linux-release-arm64", "r": "4.6.0", "check": "OK", "artifact": "7280567809" }, { "job": 78415566530, "time": 217, "config": "linux-release-x86_64", "r": "4.6.0", "check": "OK", "artifact": "7280565362" }, { "job": 78415566526, "time": 164, "config": "macos-oldrel-arm64", "r": "4.5.3", "check": "OK", "artifact": "7280550602" }, { "job": 78415566514, "time": 311, "config": "macos-oldrel-x86_64", "r": "4.5.3", "check": "OK", "artifact": "7280580868" }, { "job": 78415566536, "time": 159, "config": "macos-release-arm64", "r": "4.6.0", "check": "OK", "artifact": "7280548384" }, { "job": 78415566531, "time": 290, "config": "macos-release-x86_64", "r": "4.6.0", "check": "OK", "artifact": "7280576588" }, { "job": 78415082235, "time": 264, "config": "source", "r": "4.6.0", "check": "OK", "artifact": "7280520095" }, { "job": 78415566507, "time": 128, "config": "wasm-release", "r": "4.6.0", "check": "OK", "artifact": "7280546997" }, { "job": 78415566511, "time": 212, "config": "windows-devel", "r": "4.7.0", "check": "OK", "artifact": "7280564655" }, { "job": 78415566500, "time": 154, "config": "windows-oldrel", "r": "4.5.3", "check": "OK", "artifact": "7280552255" }, { "job": 78415566512, "time": 186, "config": "windows-release", "r": "4.6.0", "check": "OK", "artifact": "7280558942" } ], "_buildurl": "https://github.com/r-universe/freguglia/actions/runs/26610484857", "_status": "success", "_host": "GitHub-Actions", "_upstream": "https://github.com/freguglia/mrf2d", "_commit": { "id": "97b3676741057bcab91d20cbf52742e0af095504", "author": "Victor Freguglia ", "committer": "GitHub ", "message": "Merge pull request #18 from Freguglia/pl-performance\n\nImproves Pseudolikelihood computation performance", "time": 1780012306 }, "_maintainer": { "name": "Victor Freguglia", "email": "victorfreguglia@gmail.com", "login": "freguglia", "linkedin": "in/victor-freguglia-aa0335160", "description": "Assistant Professor - Department of Statistics - University of Campinas.", "uuid": 26393042, "orcid": "0000-0002-6189-4453" }, "_registered": true, "_dependencies": [ { "package": "R", "version": ">= 3.5.0", "role": "Depends" }, { "package": "Rcpp", "role": "LinkingTo" }, { "package": "RcppArmadillo", "role": "LinkingTo" }, { "package": "Rcpp", "version": ">= 1.0.1", "role": "Imports" }, { "package": "dplyr", "version": ">= 0.8.1", "role": "Imports" }, { "package": "tidyr", "role": "Imports" }, { "package": "methods", "role": "Imports" }, { "package": "ggplot2", "role": "Imports" }, { "package": "Rdpack", "role": "Imports" }, { "package": "testthat", "version": ">= 2.1.0", "role": "Suggests" }, { "package": "covr", "role": "Suggests" }, { "package": "knitr", "role": "Suggests" }, { "package": "rmarkdown", "role": "Suggests" }, { "package": "glue", "role": "Suggests" } ], "_owner": "freguglia", "_selfowned": true, "_usedby": 0, "_updates": [ { "week": "2026-22", "n": 1 } ], "_tags": [], "_topics": [ "gibbs-energy", "hidden-markov-model", "hidden-markov-models", "markov-random-field", "mrf", "mrf-models", "neighborhood", "cpp", "openmp" ], "_stars": 10, "_contributors": [ { "user": "freguglia", "count": 381, "uuid": 26393042 } ], "_userbio": { "uuid": 26393042, "type": "user", "name": "Victor Freguglia", "description": "Assistant Professor - Department of Statistics - University of Campinas." }, "_downloads": { "count": 204, "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/mrf2d" }, "_devurl": "https://github.com/freguglia/mrf2d", "_searchresults": 10, "_rbuild": "4.6.0", "_assets": [ "extra/citation.cff", "extra/citation.html", "extra/citation.json", "extra/citation.txt", "extra/contents.json", "extra/mrf2d.html", "extra/NEWS.html", "extra/NEWS.txt", "extra/readme.html", "extra/readme.md", "manual.pdf" ], "_homeurl": "https://github.com/freguglia/mrf2d", "_realowner": "freguglia", "_cranurl": true, "_releases": [ { "version": "0.1.0", "date": "2020-02-21" }, { "version": "0.2.0", "date": "2020-02-21" }, { "version": "0.3", "date": "2020-06-03" }, { "version": "0.4.0", "date": "2020-06-30" }, { "version": "0.4.1", "date": "2020-10-20" }, { "version": "0.5", "date": "2020-10-29" }, { "version": "1.0", "date": "2022-01-26" } ], "_exports": [ "cohist", "cp_mrf2d", "cplot", "dplot", "expand_array", "fit_ghm", "fit_pl", "fit_sa", "fourier_2d", "mrfi", "mrfi_to_string", "pl_mrf2d", "polynomial_2d", "rmrf2d", "rmrf2d_mc", "rpositions", "smr_array", "smr_stat", "vec_description" ], "_datasets": [ { "name": "bold5000", "title": "BOLD5000 neuroimaging data", "object": "bold5000", "class": [ "matrix", "array" ], "fields": {}, "rows": 176, "table": true, "tojson": true }, { "name": "field1", "title": "Example Data", "object": "field1", "class": [ "matrix", "array" ], "fields": {}, "rows": 150, "table": true, "tojson": true }, { "name": "hfield1", "title": "Example Data", "object": "hfield1", "class": [ "matrix", "array" ], "fields": {}, "rows": 150, "table": true, "tojson": true }, { "name": "theta_potts", "title": "Example objects from 'mrf2d'", "object": "theta_potts", "class": [ "array" ], "fields": [], "table": false, "tojson": true }, { "name": "Z_potts", "title": "Example objects from 'mrf2d'", "object": "Z_potts", "class": [ "matrix", "array" ], "fields": {}, "rows": 150, "table": true, "tojson": true } ], "_help": [ { "page": "basis_functions", "title": "Creation of basis functions", "topics": [ "basis_functions", "fourier_2d", "polynomial_2d" ] }, { "page": "bold5000", "title": "BOLD5000 neuroimaging data", "topics": [ "bold5000" ] }, { "page": "cpmrf2d", "title": "Conditional probabilities in a pixel position", "topics": [ "cpmrf2d", "cp_mrf2d" ] }, { "page": "data_examples", "title": "Example Data", "topics": [ "data_examples", "field1", "hfield1" ] }, { "page": "dplot", "title": "Plotting functions for lattice data", "topics": [ "cplot", "dplot" ] }, { "page": "fit_ghm", "title": "EM estimation for Gaussian Hidden Markov field", "topics": [ "fit_ghm" ] }, { "page": "fit_pl", "title": "Maximum Pseudo-likelihood fitting of MRFs on 2d lattices.", "topics": [ "fit_pl" ] }, { "page": "fit_sa", "title": "Stochastic Approximation fitting of MRFs on 2d lattices", "topics": [ "fit_sa" ] }, { "page": "hmrfout", "title": "MRF fitting functions output", "topics": [ "hmrfout", "plot.hmrfout", "print.hmrfout", "summary.hmrfout" ] }, { "page": "mrf2d-family", "title": "Parameter restriction families", "topics": [ "mrf2d-family" ] }, { "page": "mrfi-class", "title": "mrfi: MRF interaction structure", "topics": [ "+,mrfi,mrfi-method", "+,mrfi,numeric-method", "-,mrfi,mrfi-method", "-,mrfi,numeric-method", "as.list.mrfi", "length,mrfi-method", "mrfi", "mrfi-class", "mrfi_to_string", "rpositions", "[,mrfi,numeric,missing-method", "[[,mrfi,numeric,missing-method" ] }, { "page": "mrfout", "title": "MRF fitting functions output", "topics": [ "mrfout", "plot.mrfout", "print.mrfout", "summary.mrfout" ] }, { "page": "pl_mrf2d", "title": "Pseudo-likelihood function for MRFs on 2d lattices", "topics": [ "pl_mrf2d" ] }, { "page": "plot.mrfi", "title": "Plotting of 'mrfi' objects.", "topics": [ "mrfi-plot", "plot.mrfi" ] }, { "page": "rmrf2d", "title": "Sampling of Markov Random Fields on 2d lattices", "topics": [ "rmrf2d" ] }, { "page": "rmrf2d_mc", "title": "Markov Chain sampling of MRFs for Monte-Carlo methods", "topics": [ "rmrf2d_mc" ] }, { "page": "smr_array", "title": "Summarized representation of theta arrays", "topics": [ "expand_array", "smr_array" ] }, { "page": "smr_stat", "title": "Summary Statistics", "topics": [ "cohist", "smr_stat", "vec_description" ] }, { "page": "Z_potts", "title": "Example objects from 'mrf2d'", "topics": [ "theta_potts", "Z_potts" ] } ], "_pkglogo": "https://github.com/freguglia/mrf2d/raw/HEAD/man/figures/logo.png", "_readme": "https://github.com/freguglia/mrf2d/raw/HEAD/README.md", "_rundeps": [ "cli", "cpp11", "dplyr", "farver", "generics", "ggplot2", "glue", "gtable", "isoband", "labeling", "lifecycle", "magrittr", "pillar", "pkgconfig", "purrr", "R6", "rbibutils", "RColorBrewer", "Rcpp", "RcppArmadillo", "Rdpack", "rlang", "S7", "scales", "stringi", "stringr", "tibble", "tidyr", "tidyselect", "utf8", "vctrs", "viridisLite", "withr" ], "_sysdeps": [ { "shlib": "libstdc++", "package": "libstdc++6", "source": "gcc", "version": "14.2.0-4ubuntu2~24.04.1", "name": "c++", "homepage": "http://gcc.gnu.org/", "description": "GNU Standard C++ Library v3" }, { "shlib": "libgomp", "package": "libgomp1", "source": "gcc", "version": "14.2.0-4ubuntu2~24.04.1", "name": "openmp", "homepage": "http://gcc.gnu.org/", "description": "GCC OpenMP (GOMP) support library" } ], "_vignettes": [ { "source": "mrf2d-family.Rmd", "filename": "mrf2d-family.html", "title": "Parameter restriction families in mrf2d", "engine": "knitr::rmarkdown", "headings": [ "'onepar'", "Example", "'oneeach'", "'absdif'", "'dif'", "'free'" ], "created": "2020-04-30 00:45:58", "modified": "2020-06-02 17:57:45", "commits": 3 }, { "source": "three-dimensions-on-mrf2d.Rmd", "filename": "three-dimensions-on-mrf2d.html", "title": "Working with 3d lattices in mrf2d", "engine": "knitr::rmarkdown", "headings": [ "Introduction", "Reshaping 3-dimensional problems to mrf2d", "Reshaping random fields", "Reshaping interactions (mrfi objects)", "mrf2d methods with reshaped data", "Random sampling", "Parameter estimation", "Hidden MRFs", "Caveats of 2d projections" ], "created": "2020-10-27 20:35:59", "modified": "2020-10-29 18:23:13", "commits": 2 } ], "_score": 5, "_indexed": true, "_nocasepkg": "mrf2d", "_universes": [ "freguglia" ], "_previous": "1.0.1", "_binaries": [ { "r": "4.7.0", "os": "linux", "version": "1.0.2", "date": "2026-05-29T00:35:35.000Z", "distro": "noble", "arch": "aarch64", "commit": "97b3676741057bcab91d20cbf52742e0af095504", "fileid": "192da436649e487330ef887935add5bfc47e010cab8dbfbf97b1a83788590454", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/freguglia/actions/runs/26610484857" }, { "r": "4.7.0", "os": "linux", "version": "1.0.2", "date": "2026-05-29T00:35:03.000Z", "distro": "noble", "arch": "x86_64", "commit": "97b3676741057bcab91d20cbf52742e0af095504", "fileid": "765d40fe09f3c877b488e577b895303cfe82de1681dfdd80e20e6e364edf5612", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/freguglia/actions/runs/26610484857" }, { "r": "4.6.0", "os": "linux", "version": "1.0.2", "date": "2026-05-29T00:35:26.000Z", "distro": "noble", "arch": "aarch64", "commit": "97b3676741057bcab91d20cbf52742e0af095504", "fileid": "3d2630059db1babc95ea410aa1e2de2eadda45636249fa9e31073285a9740aba", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/freguglia/actions/runs/26610484857" }, { "r": "4.6.0", "os": "linux", "version": "1.0.2", "date": "2026-05-29T00:35:12.000Z", "distro": "noble", "arch": "x86_64", "commit": "97b3676741057bcab91d20cbf52742e0af095504", "fileid": "4f012f44d471080e678a76782871153e04d55cf84df0de66168bb10933c7433d", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/freguglia/actions/runs/26610484857" }, { "r": "4.5.3", "os": "mac", "version": "1.0.2", "date": "2026-05-29T00:34:33.000Z", "arch": "aarch64", "commit": "97b3676741057bcab91d20cbf52742e0af095504", "fileid": "e423be927e16d32b0437516a41a763d453092a0f3bf9ec2eae977235bab5aa98", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/freguglia/actions/runs/26610484857" }, { "r": "4.5.3", "os": "mac", "version": "1.0.2", "date": "2026-05-29T00:36:09.000Z", "arch": "x86_64", "commit": "97b3676741057bcab91d20cbf52742e0af095504", "fileid": "d25699ea5021a28643a804db034bfcf664d980db911246ad9208572e095d0299", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/freguglia/actions/runs/26610484857" }, { "r": "4.6.0", "os": "mac", "version": "1.0.2", "date": "2026-05-29T00:34:22.000Z", "arch": "aarch64", "commit": "97b3676741057bcab91d20cbf52742e0af095504", "fileid": "bbf3e8a4ca257225137cfb25763efab0dbb5ce0495d7dc7d0179046ad7140e28", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/freguglia/actions/runs/26610484857" }, { "r": "4.6.0", "os": "mac", "version": "1.0.2", "date": "2026-05-29T00:35:44.000Z", "arch": "x86_64", "commit": "97b3676741057bcab91d20cbf52742e0af095504", "fileid": "bd5ed10f16892e5f41de07c4c002a1c5473f1a920340fb8641162b76b6d6fd28", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/freguglia/actions/runs/26610484857" }, { "r": "4.6.0", "os": "wasm", "version": "1.0.2", "date": "2026-05-29T00:34:46.000Z", "arch": "emscripten", "commit": "97b3676741057bcab91d20cbf52742e0af095504", "fileid": "7057fb08fa535fa1bb6fec9cf0765484eb7d395e6732a951c9bcea62f76fcf49", "status": "success", "buildurl": "https://github.com/r-universe/freguglia/actions/runs/26610484857" }, { "r": "4.7.0", "os": "win", "version": "1.0.2", "date": "2026-05-29T00:34:43.000Z", "arch": "x86_64", "commit": "97b3676741057bcab91d20cbf52742e0af095504", "fileid": "9b1882081e814a7365888ee92d80fc983f74cb3cb7fd7d077efc18dc18514916", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/freguglia/actions/runs/26610484857" }, { "r": "4.5.3", "os": "win", "version": "1.0.2", "date": "2026-05-29T00:33:44.000Z", "arch": "x86_64", "commit": "97b3676741057bcab91d20cbf52742e0af095504", "fileid": "e558395fed33210f2738b5b1df422fb2b5edc75c5029a0ee069a0efbe5d19ca8", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/freguglia/actions/runs/26610484857" }, { "r": "4.6.0", "os": "win", "version": "1.0.2", "date": "2026-05-29T00:34:02.000Z", "arch": "x86_64", "commit": "97b3676741057bcab91d20cbf52742e0af095504", "fileid": "32d3b0761b8dd420f5f30fd703573a742bf770c0ec303f812f346e1a76e2d61e", "status": "success", "check": "OK", "buildurl": "https://github.com/r-universe/freguglia/actions/runs/26610484857" } ] }