#' @title
#' MOP3 function generator.
#'
#' @description
#' MOP3 function from Van Valedhuizen's test suite.
#'
#' @references
#' C. Poloni, G. Mosetti, and S. Contessi, "Multi-objective optimization by
#' GAs: Application to system and component design," in Proc. Comput.
#' Methods in Applied Sciences'96: Invited Lectures and Special Technological
#' Sessions of the 3rd ECCOMAS Comput. Fluid Dynamics Conf.
#' and the 2nd ECCOMAS Conf. Numerical Methods in Engineering, Sep.
#' 1996, pp. 258-264
#' @template arg_dimensions
#' @return [\code{smoof_multi_objective_function}]
#' Returns an instance of the MOP3 function as a \code{smoof_multi_objective_function} object.
#' @export
makeMOP3Function = function(dimensions = 2L) {
checkmate::assertInt(dimensions, lower = 1L)
force(dimensions)
# C implementation
fn = function(x) {
checkNumericInput(x, dimensions)
.Call("mof_MOP3", x)
}
makeMultiObjectiveFunction(
name = "MOP3 function",
id = sprintf("MOP3-%id-%io", dimensions, 2L),
description = "MOP3 function",
fn = fn,
par.set = ParamHelpers::makeNumericParamSet(
len = dimensions,
id = "x",
lower = rep(-pi, dimensions),
upper = rep(pi, dimensions),
vector = TRUE
),
minimize = rep(FALSE, 2L), # MOP3 is the only MOP which shall be maximized by default
n.objectives = 2L
)
}
class(makeMOP3Function) = c("function", "smoof_generator")
attr(makeMOP3Function, "name") = c("MOP3")
attr(makeMOP3Function, "type") = c("multi-objective")
attr(makeMOP3Function, "tags") = c("multi-objective")
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