#####################################################
###
### optimizing a simple sin(x) with multipoint proposal
###
#####################################################
\dontrun{
library(mlrMBO)
library(ggplot2)
set.seed(1)
configureMlr(show.learner.output = FALSE)
obj.fun = makeSingleObjectiveFunction(
name = "Sine",
fn = function(x) sin(x),
par.set = makeNumericParamSet(lower = 3, upper = 13, len = 1L),
global.opt.value = -1
)
ctrl = makeMBOControl(propose.points = 2L)
ctrl = setMBOControlTermination(ctrl, iters = 10L)
ctrl = setMBOControlInfill(ctrl, crit = makeMBOInfillCritMeanResponse())
ctrl = setMBOControlMultiPoint(
ctrl,
method = "moimbo",
moimbo.objective = "ei.dist",
moimbo.dist = "nearest.neighbor",
moimbo.maxit = 200L
)
lrn = makeMBOLearner(ctrl, obj.fun)
design = generateDesign(4L, getParamSet(obj.fun), fun = lhs::maximinLHS)
run = exampleRun(obj.fun, design = design, learner = lrn,
control = ctrl, points.per.dim = 100, show.info = TRUE)
print(run)
plotExampleRun(run, densregion = TRUE, gg.objects = list(theme_bw()))
}
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