Logging object for objective function evaluationsSource:
Container around a data.table::data.table which stores all performed function calls of the Objective.
Returns a tabular view of all performed function calls of the Objective. The
x_domaincolumn is unnested to separate columns.
Search space of objective.
Codomain of objective function.
Determines if points and results are checked for validity.
Data created by specific
Optimizers that does not relate to any individual function evaluation and can therefore not be held in
$data. Every optimizer should create and refer to its own entry in this list, named by its
Creates a new instance of this R6 class.
Archive$new(search_space, codomain, check_values = TRUE)
Specifies the search space for the Optimizer. The paradox::ParamSet describes either a subset of the
domainof the Objective or it describes a set of parameters together with a
trafofunction that transforms values from the search space to values of the domain. Depending on the context, this value defaults to the domain of the objective.
Specifies codomain of function. Most importantly the tags of each output "Parameter" define whether it should be minimized or maximized. The default is to minimize each component.
Should x-values that are added to the archive be checked for validity? Search space that is logged into archive.
Adds function evaluations to the archive table.
Set of untransformed points / points from the search space. One point per row, e.g.
data.table(x1 = c(1, 3), x2 = c(2, 4)). Column names have to match ids of the
xdtcan contain additional columns.
Transformed point(s) in the domain space.
Returns the best scoring evaluation(s). For single-crit optimization, the solution that minimizes / maximizes the objective function. For multi-crit optimization, the Pareto set / front.
The batch number(s) to limit the best results to. Default is all batches.
Amount of points to select. Ignored for multi-crit optimization.
Calculate best points w.r.t. non dominated sorting with hypervolume contribution.
Helper for print outputs.