/usr/lib/R/site-library/sem/CHANGES is in r-cran-sem 3.1.8-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 | Changes to Version 0.7-0
o Fixed problem with analytic gradient, which caused convergence problems for some models.
o Simplified optimization.
o Added modification indices (preliminary version).
o Some changes to start values.
o Added RMSEA to fit indices.
o Added Klein dataset.
Changes to Version 0.7-1
o Replaced F with FALSE as logical, F with f as variable.
Changes to Version 0.7-2
o Fixed tsls examples to run even if a global variable named F exists.
Changes to Version 0.7-3
o Fixed bug in start-values routine that affected unstandardized models.
o Added code to try to detect under-identified models.
Changes to Version 0.7-5
o Made arguments to method functions consistent with generics (mostly adding ...).
Changes to Version 0.7-6
o Check for negative degrees of freedom.
Changes to Version 0.7-7
o Fixed bug in sem.default and startvalues that prevented the model from being fit when there are all equality constraints affect precisely the same numbers of parameters.
o Fixed bug in tsls.formula that could cause the wrong variable to be identified as the response (causing the fit to fail).
o Added code to detect more instances of nonconvergence.
o Other small changes to code and documentation.
Changes to Version 0.7-8
o Fixed bug in tsls.formula that could prevent model formula from being evaluated (producing an error).
Changes to Version 0.7-9
o Fixed bug that caused a model with only one endogenous variable to fail.
o Improved computation of RMSEA confidence limits
Changes to Version 0.8-0
o Put in a warning for (unfixed) observed or latent variable without either variance or error-variance term specified (i.e., double-headed arrow). As far as I know, this will always produce an error.
Changes to Version 0.8-1
o Fixed a bug in tsls.formula that caused the function to fail when the printed representation of the instruments formula extended over more than one line.
Changes to Version 0.8-2
o Fixed a bug in startvalues() and sem.default() that caused the variables (observed + unobserved) in the model to be counted incorrectly in some (unusual) circumstances.
Changes to Version 0.9-0
o Added function specify.model() to simplify the process of sem model specification.
o Added boot.sem() to compute bootstrapped standard-error estimates and confidence intervals for sem parameters.
o sem package now has a namespace.
o Added digits argument to path.diagram(), as suggested by William Revelle.
o New argument raw to sem() to accommodate raw moment matrices (for models with intercepts, after a suggestion by Mike Stoolmiller). Added generic function raw.moments() with formula and default methods to compute raw-moment matrices.
o Small changes.
Changes to Version 0.9-1
o Compute and report the chisquare for a null model in which the observed variables are uncorrelated. Added associated additional fit indices (suggested by Barbara Bredner).
Changes to Version 0.9-2
o Added sem methods for deviance and df.residual generics.
o Small changes.
Changes to Version 0.9-3
o Changed definition to BIC to conform to recommendation in Raftery (1995), from his previous suggestion in Raftery (1993). Thanks for Ken Bollen for pointing this out.
o Small documentation changes.
o Fixed a bug that could cause summary.sem() to fail for a just-identified model (reported by Ingo Feinerer).
Changes to Version 0.9-4
o Fixed version synchronization error.
o Small changes.
Changes to Version 0.9-5
o Corrected null model chisquare and, consequently, fit statistics that depend on it.
o Added package stats to dependencies, and changed coefficients.tsls() to coef.tsls(), so sem compiles without a warning under R 2.4.0.
o Brought sample output in ?sem up to date.
o Fixed another version synchronization error.
Changes to Version 0.9-6
o The input observed-variable covariance or moment matrix may now contain variables that are not used in the model, in which case a warning is printed (in response to a problem reported by Jarrett Byrnes).
o Stray escape character removed from print.summary.sem to avoid warning in r-devel.
Changes to Version 0.9-7
o Small fixes to docs.
o Fixed standardized.coefficients() so that it works even when there is only one structural parameter in the model (fixing a bug reported by Jarrett Byrnes).
o Added read.moments() to facilitate input of covariance, correlation, and raw-moment matrices; cov2raw() to compute raw-moments matrix from a covariance or correlation matrix; and anova.sem() to compare nested models (all suggested by Michael Friendly).
o Added SRMR fit index (requested by Mathieu d'Acremont).
Changes to Version 0.9-8
o sem() will now fit a model with no free parameters (as suggested by Ken Bollen).
Changes to Version 0.9-9
o Fixed bug in summary.sem() that sometimes prevented computation of confidence limits for RMSEA (problem reported by Frank Lawrence).
o Small fixes to docs.
Changes to Version 0.9-10
o Fixed bug in anova.tsls(), which was computing the error variance from the smaller rather than the larger model (pointed out by Achim Zeleis).
Changes to Version 0.9-11
o Replaced obsolete \non_function{} markup in Rd files (reported by Kurt Hornik).
Changes to Version 0.9-12
o Fixed bug in path.diagram() that prevented customized parameter labels (reported by Christopher Marcum).
o Small fixes/changes.
Changes to Version 0.9-13
o Added vcov.sem() and coef.sem() methods (suggested by Achim Zeileis).
o If sem() can't compute the covariance matrix of the coefficients, then summary.sem() now prints an informative error message rather than failing cryptically.
Changes to Version 0.9-14
o Changed test for symmetry of input covariance matrix so that it uses isSymmetric() (suggested by Brian Lai).
o Added a test for positive-definiteness of the input covariance matrix.
o Intercept error in summary.sem() when bounds of RMSEA can't be computed (following problem reported by Andrew J. Wawrzyniak).
o Fixed error in summary.bootsem() produced by elimination in R of partial matching of list elements (problem reported by Sergio A. Estay).
Changes to Version 0.9-15
o Small fixes to mod.indices.Rd.
Changes to Version 0.9-16
o tsls() now uses Cholesky decomposition to speed up computations with many variables (slightly).
o Added fscores() function to compute factor scores, after serveral requests.
Changes to Verstion 0.9-17
o standardized.coefficients() now standardizes both path coefficients and variances/covariances (thanks to code provided by Adam Kramer).
o path.digram() now has an option for displaying standardized coefficients (again thanks to Adam Kramer).
Changes to Version 0.9-18
o path.diagram() can now run dot to create graphics output (thanks to a contribution from Michael Friendly).
o Fix to URL in DESCRIPTION (broken link reported by Jonathan Henkelman).
o Fix to startvalues() to avoid an error when the user unnecessarily but not incorrectly sets fixed variance parameters to 0 (problem reported by Rob Cribbie).
Changes to Version 0.9-19
o Fix to cross-reference in sem.Rd.
Changes to Version 0.9-20
o Fixed a bug that occurred when there is only one observed variable (reported by Anna Simonetto).
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