NEWS.md

In optimizeR: Unified Framework for Numerical Optimizers

optimizeR 1.3.0

• Documentation improvements.

• Removed renv.

• Added a safeguard if computation of (numerical) gradient or Hessian fails. (#5)

• Additional arguments passed to optimization methods now go only to the objective function. (#1)

optimizeR 1.2.1

• Small fixes.

• Added private helper function .check_arguments_complete() to the Objective object. It checks whether all required arguments are specified.

• Added functionality to the Objective object that can compute a numerical gradient and Hessian.

optimizeR 1.2.0

• Gradient, Hessian, and parameter bounds can now be passed to Optimizer objects.

• The old S3 interface has been removed. The functions define_optimizer(), optimizer_nlm(), optimizer_optim(), new_optimizer(), validate_optimizer(), and apply_optimizer() are no longer available. Please use the R6 interface via Optimizer$new() and the corresponding methods. See help("Optimizer", "optimizeR") for details.

optimizeR 1.1.3

• ParameterSpaces now allows users to specify parameters that are not used for transformations. This can be useful when one general ParameterSpaces object is defined for nested sets of parameters.

optimizeR 1.1.2

• Added the ParameterSpaces R6 object to transform parameters between optimization and interpretation space.

optimizeR 1.1.1

• The Objective object now allows different output structures for the objective function. A template can be provided via the $output_template field.

optimizeR 1.1.0

• The Optimizer object has a new method optimize, which can be used for minimization and maximization by setting the argument direction.

• In method Objective$initialize(), renamed argument objective to f.

• In method Objective$initialize(), if target = NULL (the new default), the first argument from f is taken as the target argument.

optimizeR 1.0.5

• Removed install_optimizer_packages().

optimizeR 1.0.4

• Fixed a bug and added test cases for fixed arguments that are NULL.

optimizeR 1.0.3

• Fixed a bug in creating the error message for a timeout.

• Added checks for the objective, initial, and ellipsis arguments of the optimizer function.

• Added a verbose argument to the $get_argument() and $remove_argument() methods of the Objective object.

• Added field fixed_arguments to the Objective object. It returns the names of the fixed arguments.

• Fixed a bug in backward compatibility.

optimizeR 1.0.2

• Small bug fixes.

• Backward compatibility with {optimizeR} version 0.3.3.

optimizeR 1.0.1

• Fixed wrong values for "out_value" and "out_parameter" in the optimizer dictionary entry for stats::optim.

optimizeR 1.0.0

• Instead of using S3 classes, we treat optimizers as R6 objects now.

optimizeR 0.3.3

• Removed package start-up message.

• Added the .direction argument to define_optimizer() to specify whether the optimizer minimizes or maximizes.

• Added a dot before the argument names for define_optimizer() to avoid clashes with the ... argument.

• Removed dependency on {glue}.

• Used TestFunctions::TF_ackley instead of the package's own implementation of the Ackley function for validation.

optimizeR 0.3.2

• Added the package logo and created the package website (https://loelschlaeger.de/optimizeR) with {pkgdown}. No code changes.

optimizeR 0.3.1

• In define_optimizer(), now validate = FALSE by default.

optimizeR 0.3.0

• Function set_optimizer() was renamed to define_optimizer().

• Inputs for define_optimizer() were renamed for clarity:

• opt_fun -> optimizer

• f -> objective
• p -> initial
• v -> value
• z -> parameter
• out_ign -> output_ignore

• test_par -> validation_settings

• Elements for input validation_settings have been simplified. Please see the documentation of define_optimizer().

• Elements in the output of apply_optimizer() were renamed for clarity:

• v -> value

• z -> parameter

• time -> seconds (now just a numeric)

• Element initial (the starting parameter vector) was added to the output of apply_optimizer().

optimizeR 0.2.0

• Some functions were renamed:

• optimizeR() -> apply_optimizer()

• set_optimizer_nlm() -> optimizer_nlm()

• set_optimizer_optim() -> optimizer_optim()

• Functions is_number(), try_silent(), timed(), and do.call_timed() are no longer exported.

• Function try_silent_timed() was removed.

optimizeR 0.1.0

• Initial CRAN release.

optimizeR documentation built on May 9, 2026, 5:08 p.m.