evaluateParamExpressions: Evaluates all expressions within a parameter.

In mlr-org/ParamHelpers: Helpers for Parameters in Black-Box Optimization, Tuning and Machine Learning

Evaluates all expressions within a parameter.

Description

Evaluates the expressions of a parameter, parameter set or list of parameters for a given dictionary.

Usage

evaluateParamExpressions(obj, dict = NULL)

Arguments

obj	(Param() | ParamHelpers::ParamSet() | list) Parameter, parameter set or list of parameter values. Expressions within len, lower or upper boundaries, default or values will be evaluated using the provided dictionary (dict).
dict	(environment | list | NULL) Environment or list which will be used for evaluating the variables of expressions within a parameter, parameter set or list of parameters. The default is NULL.

Value

[Param() | ParamHelpers::ParamSet() | list].

Examples

ps = makeParamSet(
  makeNumericParam("x", lower = expression(p), upper = expression(ceiling(3 * p))),
  makeIntegerParam("y", lower = 1, upper = 2)
)
evaluateParamExpressions(ps, dict = list(p = 3))

ps = makeParamSet(
  makeNumericParam("x", default = expression(sum(data$Species == "setosa"))),
  makeIntegerParam("y", lower = 1, upper = 2),
  keys = c("data", "Species")
)
evaluateParamExpressions(ps, dict = list(data = iris))

par.vals = list(
  x = expression(k),
  y = 5
)
evaluateParamExpressions(par.vals, dict = list(k = 3))

mlr-org/ParamHelpers documentation built on Dec. 23, 2024, 10:53 p.m.