{ "_id": "6ac60df7f511ae58c09a52ee", "Package": "ackwards", "Title": "Bass-Ackwards Hierarchical Structural Analysis", "Version": "0.2.0.9000", "Authors@R": "c(\nperson(\"Jeffrey M.\", \"Girard\", , \"me@jmgirard.com\", role = c(\"aut\", \"cre\"),\ncomment = c(ORCID = \"0000-0002-7359-3746\")),\nperson(\"Miriam K.\", \"Forbes\", role = \"cph\",\ncomment = \"Author of the bundled AMH correlation matrix (data/forbes2023.rda), CC-BY 4.0\"))", "Description": "Implements Goldberg's (2006)\n bass-ackwards method and modern\ndescendants for hierarchical structural analysis. Extracts\nsolutions from 1 to k factors using principal component\nanalysis (PCA), exploratory factor analysis (EFA), or\nexploratory structural equation modeling (ESEM) engines. It\nthen describes the hierarchy through the correlations between\nthe factor scores of different levels. It computes them with\nlinear algebra from the scoring weights and the correlation\nmatrix the fit uses, so they are exact for that matrix. Waller\n(2007) showed, for principal\ncomponents, that these correlations follow from the correlation\nmatrix alone. Includes the Forbes (2023)\n extension for redundancy pruning and\nall-levels cross-correlations.", "License": "MIT + file LICENSE", "Encoding": "UTF-8", "Roxygen": "list(markdown = TRUE)", "LazyData": "true", "Config/testthat/edition": "3", "Config/testthat/parallel": "true", "Config/testthat/start-first": "suggest_k, boot_edges, oblique, esem,\nlayout, missing, vignette-m24", "VignetteBuilder": "knitr", "URL": "https://jmgirard.github.io/ackwards/,\nhttps://github.com/jmgirard/ackwards", "BugReports": "https://github.com/jmgirard/ackwards/issues", "Config/roxygen2/version": "8.1.0", "Repository": "https://jmgirard.r-universe.dev", "Date/Publication": "2026-10-06 18:51:49 UTC", "RemoteUrl": "https://github.com/jmgirard/ackwards", "RemoteRef": "HEAD", "RemoteSha": "51368d3c5ac1ffb8d1cbb00e53d053f92ae7f8ab", "NeedsCompilation": "no", "Packaged": { "Date": "2026-10-07 08:32:34 UTC", "User": "root" }, "Author": "Jeffrey M. Girard [aut, cre] (ORCID:\n),\nMiriam K. 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