{
  "_id": "6a1571b0acfb0bcc41d652e1",
  "Package": "diffusion",
  "Type": "Package",
  "Title": "Forecast the Diffusion of New Products",
  "Version": "0.4.0",
  "Authors@R": "c(person(\"Oliver\", \"Schaer\", email = \"info@oliverschaer.ch\",\nrole = c(\"aut\", \"cre\"),\ncomment = \"Assistant Professor, LeBow College of Business, Drexel University, USA\"),\nperson(\"Nikolaos\", \"Kourentzes\", email = \"nikolaos@kourentzes.com\",\nrole = c(\"aut\"),\ncomment = \"Professor of Predictive Analytics, School of Informatics, Skoevde University, Sweden\"),\nperson(\"Ivan\", \"Svetunkov\", email = \"ivan@svetunkov.com\",\nrole = c(\"aut\"),\ncomment=\"Lecturer at Centre for Marketing Analytics and Forecasting, Lancaster University, UK\"))",
  "URL": "https://github.com/mamut86/diffusion",
  "BugReports": "https://github.com/mamut86/diffusion/issues",
  "Description": "Various diffusion models to forecast new product growth.\nCurrently the package contains Bass, Gompertz, Gamma/Shifted\nGompertz and Weibull curves. See Meade and Islam (2006)\n<doi:10.1016/j.ijforecast.2006.01.005>.",
  "License": "LGPL-2.1",
  "Encoding": "UTF-8",
  "LazyData": "true",
  "RoxygenNote": "7.3.1",
  "Config/pak/sysreqs": "cmake make libicu-dev",
  "Repository": "https://mamut86.r-universe.dev",
  "Date/Publication": "2024-04-16 16:57:13 UTC",
  "RemoteUrl": "https://github.com/mamut86/diffusion",
  "RemoteRef": "HEAD",
  "RemoteSha": "13cce4653f8be7e409683fc2faaf9b371b83d515",
  "NeedsCompilation": "no",
  "Packaged": {
    "Date": "2026-05-26 10:07:23 UTC",
    "User": "root"
  },
  "Author": "Oliver Schaer [aut, cre] (Assistant Professor, LeBow College of\nBusiness, Drexel University, USA),\nNikolaos Kourentzes [aut] (Professor of Predictive Analytics, School of\nInformatics, Skoevde University, Sweden),\nIvan Svetunkov [aut] (Lecturer at Centre for Marketing Analytics and\nForecasting, Lancaster University, UK)",
  "Maintainer": "Oliver Schaer <info@oliverschaer.ch>",
  "MD5sum": "026752d81f3db66a11b8781a1d178a33",
  "_user": "mamut86",
  "_type": "src",
  "_file": "diffusion_0.4.0.tar.gz",
  "_fileid": "05caa8f37b181e5b402b1aef409f5a092e93f2a11952c740c99ec9581767adca",
  "_filesize": 176646,
  "_sha256": "05caa8f37b181e5b402b1aef409f5a092e93f2a11952c740c99ec9581767adca",
  "_created": "2026-05-26T10:07:23.000Z",
  "_published": "2026-05-26T10:10:56.008Z",
  "_distro": "noble",
  "_jobs": [
    {
      "job": 77852208864,
      "time": 171,
      "config": "linux-devel-x86_64",
      "r": "4.7.0",
      "check": "OK",
      "artifact": "7214365289"
    },
    {
      "job": 77852208881,
      "time": 146,
      "config": "linux-release-x86_64",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7214357449"
    },
    {
      "job": 77852208942,
      "time": 134,
      "config": "macos-oldrel-arm64",
      "r": "4.5.3",
      "check": "OK",
      "artifact": "7214347701"
    },
    {
      "job": 77852208857,
      "time": 152,
      "config": "macos-release-arm64",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7214350202"
    },
    {
      "job": 77851666796,
      "time": 202,
      "config": "source",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7214308737"
    },
    {
      "job": 77852208946,
      "time": 111,
      "config": "wasm-release",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7214346381"
    },
    {
      "job": 77852208878,
      "time": 107,
      "config": "windows-devel",
      "r": "4.7.0",
      "check": "OK",
      "artifact": "7214345018"
    },
    {
      "job": 77852208876,
      "time": 89,
      "config": "windows-oldrel",
      "r": "4.5.3",
      "check": "OK",
      "artifact": "7214339363"
    },
    {
      "job": 77852208904,
      "time": 94,
      "config": "windows-release",
      "r": "4.6.0",
      "check": "OK",
      "artifact": "7214340796"
    }
  ],
  "_buildurl": "https://github.com/r-universe/mamut86/actions/runs/26445776101",
  "_status": "success",
  "_host": "GitHub-Actions",
  "_upstream": "https://github.com/mamut86/diffusion",
  "_commit": {
    "id": "13cce4653f8be7e409683fc2faaf9b371b83d515",
    "author": "mamut86 <info@oliverschaer.ch>",
    "committer": "mamut86 <info@oliverschaer.ch>",
    "message": "Updating URL again\n",
    "time": 1713286633
  },
  "_maintainer": {
    "name": "Oliver Schaer",
    "email": "info@oliverschaer.ch",
    "login": "mamut86",
    "linkedin": "in/oliverschaer",
    "description": "Assistant Professor at Drexel University LeBow College of Business",
    "uuid": 13066557
  },
  "_registered": true,
  "_dependencies": [
    {
      "package": "R",
      "version": ">= 3.5.0",
      "role": "Depends"
    },
    {
      "package": "nloptr",
      "role": "Imports"
    },
    {
      "package": "systemfit",
      "role": "Imports"
    },
    {
      "package": "optimx",
      "role": "Imports"
    }
  ],
  "_owner": "mamut86",
  "_selfowned": true,
  "_usedby": 0,
  "_updates": [],
  "_tags": [],
  "_topics": [
    "diffusion",
    "diffusion-models",
    "forecasting",
    "growth-curve-models",
    "lifecycle",
    "new-product"
  ],
  "_stars": 8,
  "_contributors": [
    {
      "user": "mamut86",
      "count": 141,
      "uuid": 13066557
    },
    {
      "user": "config-i1",
      "count": 57,
      "uuid": 7396330
    },
    {
      "user": "trnnick",
      "count": 23,
      "uuid": 7304533
    }
  ],
  "_userbio": {
    "uuid": 13066557,
    "type": "user",
    "name": "Oliver Schaer",
    "description": "Assistant Professor at Drexel University LeBow College of Business"
  },
  "_downloads": {
    "count": 299,
    "source": "https://cranlogs.r-pkg.org/downloads/total/last-month/diffusion"
  },
  "_mentions": 5,
  "_devurl": "https://github.com/mamut86/diffusion",
  "_searchresults": 29,
  "_rbuild": "4.6.0",
  "_assets": [
    "extra/citation.cff",
    "extra/citation.html",
    "extra/citation.json",
    "extra/citation.txt",
    "extra/contents.json",
    "extra/diffusion.html",
    "extra/NEWS.html",
    "extra/NEWS.txt",
    "extra/readme.html",
    "extra/readme.md",
    "manual.pdf"
  ],
  "_homeurl": "https://github.com/mamut86/diffusion",
  "_realowner": "mamut86",
  "_cranurl": true,
  "_releases": [
    {
      "version": "0.2.7",
      "date": "2018-01-05"
    },
    {
      "version": "0.4.0",
      "date": "2024-04-16"
    }
  ],
  "_exports": [
    "difcurve",
    "diffusion",
    "is.bass",
    "is.diffusion",
    "Nortonbass",
    "Nortonbass_error",
    "Nortonbass_startvalgen",
    "seqdiffusion"
  ],
  "_datasets": [
    {
      "name": "tsAc",
      "title": "Time series: Assassins Creeds",
      "object": "tsac",
      "class": [
        "matrix",
        "array"
      ],
      "fields": [
        "ac1",
        "ac2",
        "ac3",
        "ac4",
        "ac5",
        "ac6",
        "ac7",
        "ac8"
      ],
      "rows": 380,
      "table": true,
      "tojson": true
    },
    {
      "name": "tsCarstock",
      "title": "Time series: Stock of cars",
      "object": "tscarstock",
      "class": [
        "data.frame"
      ],
      "fields": [
        "year",
        "raw",
        "smoothed"
      ],
      "rows": 25,
      "table": true,
      "tojson": true
    },
    {
      "name": "tsChicken",
      "title": "Time series: Chicken weight",
      "object": "tschicken",
      "class": [
        "data.frame"
      ],
      "fields": [
        "time",
        "weight"
      ],
      "rows": 13,
      "table": true,
      "tojson": true
    },
    {
      "name": "tsCovid",
      "title": "Time series: COVID-19 confirmed cases US",
      "object": "tsCovid",
      "class": [
        "ts"
      ],
      "fields": [],
      "table": false,
      "tojson": true
    },
    {
      "name": "tsIbm",
      "title": "Time series: Sales of IBM Computers",
      "object": "tsibm",
      "class": [
        "data.frame"
      ],
      "fields": [
        "SIU1",
        "SIU2",
        "SIU3",
        "SIU4"
      ],
      "rows": 24,
      "table": true,
      "tojson": true
    },
    {
      "name": "tsMetal",
      "title": "Time series: U.S. Merchant Marine conversion to metal",
      "object": "tsmetal",
      "class": [
        "data.frame"
      ],
      "fields": [
        "year",
        "substitution"
      ],
      "rows": 17,
      "table": true,
      "tojson": true
    },
    {
      "name": "tsSafari",
      "title": "Time series: Safari Browser market share",
      "object": "tssafari",
      "class": [
        "data.frame"
      ],
      "fields": [
        "Date",
        "Safari10.0",
        "Safari9.1",
        "Safari9.0",
        "Safari8.0",
        "Safari7.1",
        "Safari7.0",
        "Safari6.1",
        "Safari6.0",
        "Safari5.1",
        "Safari5.0",
        "Safari4.1",
        "Safari4.0"
      ],
      "rows": 98,
      "table": true,
      "tojson": true
    },
    {
      "name": "tsWindows",
      "title": "Time series: Windows OS Platform Statistics",
      "object": "tswindows",
      "class": [
        "data.frame"
      ],
      "fields": [
        "Date",
        "Win10",
        "Win8",
        "Win7",
        "Vista",
        "WinXP",
        "Win2000",
        "Win98",
        "Win95"
      ],
      "rows": 168,
      "table": true,
      "tojson": true
    }
  ],
  "_help": [
    {
      "page": "difcurve",
      "title": "Calculates the values for various diffusion curves, given some parameters.",
      "topics": [
        "difcurve"
      ]
    },
    {
      "page": "diffusion",
      "title": "Fit various diffusion curves.",
      "topics": [
        "diffusion"
      ]
    },
    {
      "page": "isFunctions",
      "title": "Diffusion class checkers",
      "topics": [
        "is.bass",
        "is.diffusion"
      ]
    },
    {
      "page": "plot.diffusion",
      "title": "Plot a fitted diffusion curve.",
      "topics": [
        "plot.diffusion"
      ]
    },
    {
      "page": "predict.diffusion",
      "title": "Predict future periods of a fitted diffusion curve.",
      "topics": [
        "predict.diffusion"
      ]
    },
    {
      "page": "print.diffusion",
      "title": "Print a fitted diffusion curve.",
      "topics": [
        "print.diffusion"
      ]
    },
    {
      "page": "tsAc",
      "title": "Time series: Assassins Creeds",
      "topics": [
        "tsAc"
      ]
    },
    {
      "page": "tsCarstock",
      "title": "Time series: Stock of cars",
      "topics": [
        "tsCarstock"
      ]
    },
    {
      "page": "tsChicken",
      "title": "Time series: Chicken weight",
      "topics": [
        "tsChicken"
      ]
    },
    {
      "page": "tsCovid",
      "title": "Time series: COVID-19 confirmed cases US",
      "topics": [
        "tsCovid"
      ]
    },
    {
      "page": "tsIbm",
      "title": "Time series: Sales of IBM Computers",
      "topics": [
        "tsIbm"
      ]
    },
    {
      "page": "tsMetal",
      "title": "Time series: U.S. Merchant Marine conversion to metal",
      "topics": [
        "tsMetal"
      ]
    },
    {
      "page": "tsSafari",
      "title": "Time series: Safari Browser market share",
      "topics": [
        "tsSafari"
      ]
    },
    {
      "page": "tsWindows",
      "title": "Time series: Windows OS Platform Statistics",
      "topics": [
        "tsWindows"
      ]
    }
  ],
  "_readme": "https://github.com/mamut86/diffusion/raw/HEAD/README.md",
  "_rundeps": [
    "abind",
    "backports",
    "boot",
    "broom",
    "car",
    "carData",
    "cli",
    "colorspace",
    "cowplot",
    "cpp11",
    "Deriv",
    "doBy",
    "dplyr",
    "farver",
    "forecast",
    "Formula",
    "fracdiff",
    "generics",
    "ggplot2",
    "glue",
    "gtable",
    "isoband",
    "labeling",
    "lattice",
    "lifecycle",
    "lme4",
    "lmtest",
    "magrittr",
    "MASS",
    "Matrix",
    "MatrixModels",
    "mgcv",
    "microbenchmark",
    "minqa",
    "modelr",
    "nlme",
    "nloptr",
    "nnet",
    "numDeriv",
    "optimx",
    "pbkrtest",
    "pillar",
    "pkgconfig",
    "pracma",
    "purrr",
    "quantreg",
    "R6",
    "rbibutils",
    "RColorBrewer",
    "Rcpp",
    "RcppArmadillo",
    "RcppEigen",
    "Rdpack",
    "reformulas",
    "rlang",
    "S7",
    "sandwich",
    "scales",
    "SparseM",
    "stringi",
    "stringr",
    "survival",
    "systemfit",
    "tibble",
    "tidyr",
    "tidyselect",
    "timeDate",
    "urca",
    "utf8",
    "vctrs",
    "viridisLite",
    "withr",
    "zoo"
  ],
  "_score": 5.064457989226918,
  "_indexed": true,
  "_nocasepkg": "diffusion",
  "_universes": [
    "mamut86"
  ],
  "_binaries": [
    {
      "r": "4.7.0",
      "os": "linux",
      "version": "0.4.0",
      "date": "2026-05-26T10:10:02.000Z",
      "distro": "noble",
      "commit": "13cce4653f8be7e409683fc2faaf9b371b83d515",
      "fileid": "adcb25eab7dba82384afc3626adf65f57917d8f92f033a73e83df0cecac692e5",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/mamut86/actions/runs/26445776101"
    },
    {
      "r": "4.6.0",
      "os": "linux",
      "version": "0.4.0",
      "date": "2026-05-26T10:09:40.000Z",
      "distro": "noble",
      "commit": "13cce4653f8be7e409683fc2faaf9b371b83d515",
      "fileid": "d4184a9d0a45a026ffda23730ed45bc5ef7c061d13992078e7e0fe5b9c03e73b",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/mamut86/actions/runs/26445776101"
    },
    {
      "r": "4.5.3",
      "os": "mac",
      "version": "0.4.0",
      "date": "2026-05-26T10:09:22.000Z",
      "commit": "13cce4653f8be7e409683fc2faaf9b371b83d515",
      "fileid": "277a69e3e79b4b841c02c20d3cfe63d1adb35298052b37ba507d1b9366ba3886",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/mamut86/actions/runs/26445776101"
    },
    {
      "r": "4.6.0",
      "os": "mac",
      "version": "0.4.0",
      "date": "2026-05-26T10:09:23.000Z",
      "commit": "13cce4653f8be7e409683fc2faaf9b371b83d515",
      "fileid": "20383d6adb1c5065d86e5e1f798912c1b970dbedf950b8ad4fe84291edbdc5ed",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/mamut86/actions/runs/26445776101"
    },
    {
      "r": "4.6.0",
      "os": "wasm",
      "version": "0.4.0",
      "date": "2026-05-26T10:09:35.000Z",
      "commit": "13cce4653f8be7e409683fc2faaf9b371b83d515",
      "fileid": "d5204c2fa49f91b3e450b908e3be1d5da0d2b2510b81c1bfaaed5d9beaea469a",
      "status": "success",
      "buildurl": "https://github.com/r-universe/mamut86/actions/runs/26445776101"
    },
    {
      "r": "4.7.0",
      "os": "win",
      "version": "0.4.0",
      "date": "2026-05-26T10:08:55.000Z",
      "commit": "13cce4653f8be7e409683fc2faaf9b371b83d515",
      "fileid": "b636628770f64947a52e54cb5be76bc87a050e94f004e81d1380d7ceb73f037b",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/mamut86/actions/runs/26445776101"
    },
    {
      "r": "4.5.3",
      "os": "win",
      "version": "0.4.0",
      "date": "2026-05-26T10:08:40.000Z",
      "commit": "13cce4653f8be7e409683fc2faaf9b371b83d515",
      "fileid": "419a475bbafd097da765fe2e3e42b72cb0ac31699578c2c1509f083979f3cf29",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/mamut86/actions/runs/26445776101"
    },
    {
      "r": "4.6.0",
      "os": "win",
      "version": "0.4.0",
      "date": "2026-05-26T10:08:42.000Z",
      "commit": "13cce4653f8be7e409683fc2faaf9b371b83d515",
      "fileid": "ecbc6f2128f08ab68c2ff4a631e859db314409f3b55867d93de82cf68f12dbc2",
      "status": "success",
      "check": "OK",
      "buildurl": "https://github.com/r-universe/mamut86/actions/runs/26445776101"
    }
  ]
}