Error: Setting of final.method and final.evals for multi-objective optimization not supported at the moment.
swaheera opened this issue · 0 comments
swaheera commented
Hello Dr. Richter,
I ran the following code using your library
library(mlrMBO)
obj.fn = makeMultiObjectiveFunction(
name = "My test function",
fn = function(x1, x2, x3, x4) {
var_1 <- sin(x1 + x2)
var_2 <- cos(x1 - x2)
var_3 <- x1 + x4
var_4 <- x3 + x4 -7
goal_1 = sum(var_1 + var_2 + var_3 + var_4)
goal_2 = var_1 + var_2 - var_3 + var_4
goal_3 = var_1 + var_2 - var_3 + 2*var_4
return(c(goal_1, goal_2, goal_3))
},
n.objectives = 3L,
#define acceptable ranges
par.set = makeParamSet(
makeNumericParam("x1", lower = 20, upper = 40),
makeNumericParam("x2", lower = 30, upper = 45),
makeNumericParam("x3", lower = 10, upper = 20),
makeNumericParam("x4", lower = 10, upper = 50)
#define constraints
, forbidden = expression(x2 >x1 | x3 > x4)
),
minimize=rep(TRUE,3)
)
#create control gird
control=makeMBOControl(propose.points=1, final.method="best.predicted", n.objectives = 3L, final.evals=10)
control=setMBOControlTermination(control, iters=10)
control=setMBOControlInfill(control, crit=makeMBOInfillCritEI())
#perform optimization
lrn=makeMBOLearner(control, obj.fn)
res = mbo(obj.fn, design = NULL, learner = lrn, control = control, show.info = TRUE)
This produces the following error:
Error in checkStuff(fun, design, learner, control) :
Setting of final.method and final.evals for multi-objective optimization not supported at the moment.
Do you know why this is error is being produced? Is there a way to fix it?
Thank you so much for your help!