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  "Package": "vbpm",
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  "Title": "Variational Bayes Psychometric Models",
  "Version": "0.9.1",
  "Authors@R": "c(\nperson(\"Jinsong\", \"Chen\", email = \"jinsong.chen@live.com\",\nrole = c(\"aut\", \"cre\"),\ncomment = c(ORCID = \"0000-0002-0157-5469\")),\nperson(\"Yi\", \"Jin\", role = \"aut\",\ncomment = c(ORCID = \"0000-0002-8604-5992\")))",
  "Description": "Variational Bayes estimation for a family of psychometric\nmeasurement models. Two models are provided. Variational Bayes\nfactor analysis (vbfa) is a regularized partially confirmatory\nfactor model spanning the confirmatory-exploratory continuum\nvia spike-and-slab priors on the loadings (Chen, Guo, Zhang,\nand Pan, 2021 <doi:10.1037/met0000293>; Chen, 2023\n<doi:10.3758/s13428-022-01884-7>; Jin and Chen, 2025\n<doi:10.1080/10705511.2024.2432612>), with an optional dynamic\n(warm-started) regularization path, an orthogonal bifactor\nparameterization, and optional sparse residual (local\ndependence) estimation through a graphical spike-and-slab prior\nsolved by QUIC (Jin, Chen, Yan, and Zhang, 2026\n<doi:10.31234/osf.io/dehtv_v2>). Regularized MIMIC (vbmimic)\nextends this to multiple-indicators multiple-causes models,\nplacing spike-and-slab priors on both the measurement and the\nstructural part (Jin and Chen, 2025\n<doi:10.1080/00273171.2025.2483253>). Companion tools compute\nSEM-like fit statistics, and sweep a factor-count window to\nreport candidate fit, criterion, and between-candidate\nloading-correspondence measurements without selecting a count\n(Chen and Jin, 2026 <doi:10.48550/arXiv.2607.07159>). Data\ngenerators for either model family are also provided.",
  "License": "GPL-3",
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  "Roxygen": "list(markdown = TRUE)",
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  "URL": "https://github.com/Jinsong-Chen/vbpm",
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  "Repository": "https://jinsong-chen.r-universe.dev",
  "Date/Publication": "2026-08-24 18:43:16 UTC",
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  "Packaged": {
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  "Author": "Jinsong Chen [aut, cre] (ORCID:\n<https://orcid.org/0000-0002-0157-5469>),\nYi Jin [aut] (ORCID: <https://orcid.org/0000-0002-8604-5992>)",
  "Maintainer": "Jinsong Chen <jinsong.chen@live.com>",
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    "author": "Jinsong <jinsong.chen@live.com>",
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    "message": "Scope the bitwise-assertion wording to the frozen reference\n\n\"Bitwise identity is no longer asserted anywhere\" overstated the change. The\nsuite deliberately keeps bitwise assertions where they are portable: two fits\ncomputed in one process must agree exactly, and test-vbfa.R:259 relies on that\nto prove bifactor mode equals the hand-built general column. Twenty-five\nexpect_identical calls remain in that file alone. Only the frozen r1.1\nreference stopped being asserted bitwise, because that comparison crosses\nbuilds and a stored reference cannot survive a different BLAS.\n\nNEWS.md, cran-comments.md and the webform submission comment now say the\nfrozen-reference output is no longer asserted bitwise and that the property\ndepends on the build.\n\nTwo related qualifications. \"No user-visible behaviour changed\" becomes \"no\nexecutable estimator or API behaviour changed\", which is what was actually\nverified; the vignettes and manual pages did change. And the reproduction\nclaim is qualified to the same computational environment, since cross-platform\nagreement is exactly what the release stops promising bitwise.\n\nAlso rewraps the R/-scope paragraph, one line of which had drifted to 91\ncharacters.\n",
    "time": 1787596996
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      "title": "Fit statistics for vbpm models",
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        "fit_stats.vbmimic",
        "fit_stats.vbpm_fit"
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      "title": "Methods for a PEFA factor-count sweep",
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