CEGO (version 2.1.0)

optimRS: Combinatorial Random Search

Description

Random Search for mixed or combinatorial optimization. Solutions are generated completely at random.

Usage

optimRS(x = NULL, fun, control = list())

Arguments

x

Optional set of solution(s) as a list, which are added to the randomly generated solutions and are also evaluated with the target function.

fun

target function to be minimized

control

(list), with the options budget The limit on number of target function evaluations (stopping criterion) (default: 100) vectorized Boolean. Defines whether target function is vectorized (takes a list of solutions as argument) or not (takes single solution as argument). Default: FALSE creationFunction Function to create individuals/solutions in search space. Default is a function that creates random permutations of length 6

Value

a list: xbest best solution found ybest fitness of the best solution x history of all evaluated solutions y corresponding target function values f(x) count number of performed target function evaluations

See Also

optimCEGO, optimEA, optim2Opt, optimMaxMinDist

Examples

# NOT RUN {
seed=0
#distance
dF <- distancePermutationHamming
#creation
cF <- function()sample(5)
#objective function
lF <- landscapeGeneratorUNI(1:5,dF)
#start optimization
set.seed(seed)
res <- optimRS(,lF,list(creationFunction=cF,budget=100,
	vectorized=TRUE)) ##target function is "vectorized", expects list as input
res$xbest 

# }