0.8.8: Updates

• The optimizer package was changed from "optimr" to "optimx". The functionality remains identical.

0.8.7: Updates

• The package "aldvmm" now uses analytical gradients instead of numerical approximations during optimization and in methods used for estimators from the "sandwich" package.
• New methods for generic functions stats::formula(), stats::residuals() and stats::update(). Objects of class "aldvmm" can now be supplied to sandwich::sandwich(), sandwich::vcovCL(), sandwich::vcovPL(), sandwich::vcovHAC() and sandwich::vcovBS(). sandwich::vcovBS() allows re-estimating the covariance matrix using bootstrapping with and without clustering.
• Objects of class "aldvmm" now include predicted probabilities of component membership for all observations in the estimation data.
• New html vignette.

0.8.6: Updates

• Default optimzation method was changed to "BFGS".
• New methods for generic functions print(), summary(), stats::predict(), stats::coef(), stats::nobs(), stats::vcov(), stats::model.matrix() and sandwich::estfun() are available. Objects of class "aldvmm" can now be supplied to sandwich::sandwich(), sandwich::vcovCL(), lmtest::coeftest(), lmtest::coefci() and other functions.
• New workflow using the function Formula::formula() to handle models with two right-hand sides.
• Objects of class "aldvmm" include new elements:
  • n: The number of complete observations.
  • df.null: Degrees of freedom of null model.
  • df.residual: Degrees of freedom of fitted model.
  • iter: The number of iterations during optimization.
  • convergence: An indicator of successful completion of optimization.
  • call: A character value of the model call.
  • terms: A list of terms objects for the models.
  • data: A data frame of the estimation data.
  • contrasts: A nested list of character values of contrasts.
  • na.action: An object indicating the na.action used in stats::model.frame()

0.8.5: Updates

• Update in validate_aldvmm(): Checking for class type of model formula using base::inherits() instead of if(class(obj) == "formula").
• Update in vignette: Include figures as .eps files to avoid loading ggplot objects from previous versions of ggplot2.

0.8.4: Important bugfixes

Merge pull request #27 from pletschm/develop

Develop

0.8.3: Initial CRAN release

Merge pull request #17 from pletschm/release

second round of revision after second comments from CRAN

0.8.2: Merge pull request #11 from pletschm/develop

Bug Fixes

• Solves compatibility issues with R 3.6.3
• Corrected error in calculation of p-values of parameter estimates

0.8.1

Improvements

• Faster implementation of calculation of standard errors of fitted and predicted values

Other Changes

• Updated vignette: The vignette now includes a comparison of aldvmm results to the STATA package's results in four reference cases.

0.8.0

removing @author from headers