mutation_current_to_pbest {ExpDE} | R Documentation |
/current-to-pbest mutation for DE
Description
Implements the "/current-to-pbest" mutation for the ExpDE framework
Usage
mutation_current_to_pbest(X, mutpars)
Arguments
X |
population matrix |
mutpars |
mutation parameters (see |
Details
This routine also implements one special case:
current-to-best mutation (
current_to_best
), by settingmutpars$p = 1
);Flat recombination (
flat
), by settingrecpars$alpha = recpars$beta = 0
)
Value
Matrix M
containing the mutated population
Mutation Parameters
The mutpars
parameter contains all parameters required to define the
mutation. mutation_current_to_pbest()
understands the following fields in
mutpars
:
-
f
: scaling factor for difference vector(s).
Accepts numeric vectors of size 1 ornvecs
. -
p
: either the number of "best" vectors to use (if given as a positive integer) or the proportion of the population to use as "best" vectors (if 0 < p < 1).
Warning
This routine will search for the performance vector
of population X
(J
) in the parent environment (using
parent.frame()
. This variable must be defined for
mutation_current_to_pbest()
to work.
References
J. Zhang, A.C. Sanderson, "JADE: Adaptive differential evolution with optional external archive". IEEE Transactions on Evolutionary Computation 13:945-958, 2009
Author(s)
Felipe Campelo (fcampelo@ufmg.br)