{ "_id": "6a4289e54ba05a737d8a92e0", "Package": "fibr", "Type": "Package", "Title": "Prior-Fraction Diagnostics for Hierarchical Models", "Version": "0.1.1", "Authors@R": "person(\"Aidan D\", \"Bindoff\",\nemail = \"aidan.bindoff@utas.edu.au\",\nrole = c(\"aut\", \"cre\"),\ncomment = c(ORCID = \"0000-0002-0943-2702\"))", "Description": "Computes the prior fraction, the per-group pooling or\nshrinkage factor, for hierarchical models, including directly\nfrom 'brms' fits. For each group-level coefficient the prior\nfraction is the share of the posterior precision contributed by\nthe shrinkage prior relative to the likelihood; values near one\nindicate a coefficient that is prior-dominated (the\ncentring/non-centring funnel regime), values near zero indicate\na likelihood-dominated coefficient that is well identified from\nthe data. These quantities are invisible to standard\nconvergence diagnostics such as R-hat and effective sample\nsize, and they indicate where a non-centred reparameterisation\nis likely to help. A companion advisor reports the same\ndecomposition for changepoint random effects fitted with\n'smoothbp'. The underlying geometry (the Fisher-metric\nconnection on the base-fiber split, for which this connection\nis flat so the obstruction is statistical rather than\ngeometric) is described in Bindoff (2026)\n; code reproducing the paper is in\nthe package's source repository.", "License": "MIT + file LICENSE", "URL": "https://github.com/ABindoff/fibr,\nhttps://doi.org/10.5281/zenodo.20724550", "BugReports": "https://github.com/ABindoff/fibr/issues", "Encoding": "UTF-8", "RoxygenNote": "7.3.3", "Additional_repositories": "https://stan-dev.r-universe.dev", "Config/testthat/edition": "3", "Config/rextendr/version": "0.5.0", "SystemRequirements": "Cargo (Rust's package manager), rustc >= 1.65.0, xz", "NeedsCompilation": "no", "Packaged": { "Date": "2026-06-29 15:00:43 UTC", "User": "root" }, "Author": "Aidan D Bindoff [aut, cre] (ORCID:\n)", "Maintainer": "Aidan D Bindoff ", "Config/pak/sysreqs": "xz-utils libclang-dev", "Repository": "https://cran.r-universe.dev", "Date/Publication": 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