{ "_id": "6a104522acfb0bcc41c9e67f", "Package": "qdm", "Version": "0.1-0", "Date": "2014-10-16", "Title": "Fitting a Quadrilateral Dissimilarity Model to Same-Different\nJudgments", "Authors@R": "c(person(\"Nora\", \"Umbach\", role = c(\"aut\", \"cre\"),\nemail = \"nora.umbach@web.de\"),\nperson(\"Florian\", \"Wickelmaier\", role = \"aut\"))", "Description": "This package provides different specifications of a\nQuadrilateral Dissimilarity Model which can be used to fit\nsame-different judgments in order to get a predicted matrix\nthat satisfies regular minimality [Colonius & Dzhafarov, 2006,\nMeasurement and representations of sensations, Erlbaum]. From\nsuch a matrix, Fechnerian distances can be computed.", "License": "GPL (>= 2)", "Packaged": { "Date": "2026-05-11 06:09:17 UTC", "User": "root" }, "Author": "Nora Umbach [aut, cre], Florian Wickelmaier [aut]", "Maintainer": "Nora Umbach ", "NeedsCompilation": "no", "Repository": "https://cran.r-universe.dev", "Date/Publication": "2014-10-16 00:00:00 UTC", "RemoteUrl": "https://github.com/cran/qdm", "RemoteRef": "HEAD", "RemoteSha": "4e36d5eda8f659f081b59671209e9998d4712244", "MD5sum": "3bb75034994f12340af5a7a2eef0ba76", "_user": "cran", "_type": "src", "_file": "qdm_0.1-0.tar.gz", "_fileid": "b5f41d51c280468a159ed635101f077abb2569946b892f4da726a0f0fcd1c592", "_filesize": 873095, "_sha256": "b5f41d51c280468a159ed635101f077abb2569946b892f4da726a0f0fcd1c592", "_created": "2026-05-11T06:09:17.000Z", "_published": "2026-05-22T11:59:30.247Z", "_distro": "noble", "_jobs": [ { "job": 77375055357, "time": 100, "config": "linux-devel-x86_64", "r": "4.7.0", "check": "OK", "artifact": 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Judgments of Gray Patches", "object": "lightness", "file": "lightness.txt.gz", "class": [ "data.frame" ], "fields": [ "resp", "RT", "id", "ses", "s1", "s2", "key" ], "rows": 35760, "table": true, "tojson": true } ], "_help": [ { "page": "FMrate", "title": "Discrimination Judgments of Frequency-Modulated Tones", "topics": [ "FMrate" ] }, { "page": "lightness", "title": "Discrimination Judgments of Gray Patches", "topics": [ "lightness" ] }, { "page": "persp.qdm", "title": "Perspective Plot for Predictions of Quadrilateral Dissimilarity Model", "topics": [ "persp.qdm" ] }, { "page": "predict.qdm", "title": "Predictions of Quadrilateral Dissimilarity Model", "topics": [ "predict.qdm" ] }, { "page": "samediff", "title": "Create Discrimination Probabilities (Psi) from Data Frame", "topics": [ "psi", "samediff" ] }, { "page": "qdm", "title": "Fit a Quadrilateral Dissimilarity Model", "topics": [ "qdm" ] } ], "_rundeps": [], "_score": 1, "_indexed": true, "_nocasepkg": "qdm", "_universes": [ 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