Biomedical Engineering Reference
In-Depth Information
Perform mutation in a random
part of m-1 clones
Part 1
Part 2
Part i
Part p
Clone 1
1
0
1
0
Clone 2
1
1
1
0
Clone m
1
0
0
0
Transfer among m clones
Part 1
Part 2
Part i
Part p
Clone 1
Clone 2
1
1
1
0
1
1
1
0
Clone m
1
1
1
0
Loop until all parts are tested
C'
Figure 3.5
Example.of.transduction.
rule.in.fuzzy.system.design.problems..If.canonical.binary.encoding.is.used,.
transduction.may.not.be.an.effective.approach.
3.2.2.2 Conjugation
Conjugation. [19,55,56]. is. another. genetic. operator. inspired. by. bacterial.
recombination.. It. involves. a. unidirectional. transfer. of. genetic. material. by.
direct.cellular.contact.between.a.donor.bacterial.cell.and.a.recipient.cell..A.
kind. of. conjugation. based. on. tournament. selection. was. suggested. [23,59]..
Parents.are.randomly.selected;.then,.the.winner.of.the.tournament.becomes.
the.donor,.and.the.loser.becomes.the.recipient.
Figure 3.6
.
depicts. a. simple. example. of. conjugation.. First,. two. points. are.
randomly.selected.in.the.donor.chromosome.to.identify.the.region.for.con-
jugation..The.genes.within.the.conjugation.region.are.then.transferred.to.the.
same.region.of.the.recipient.
Apparently,. the. same. effect. shown. in.
Figure 3.6
.
can. also. be. achieved.
by. double-point. crossover.. However,. there. exists. a. significant. difference.
between.conjugation.and.crossover..The.conjugation.operator.can.be.applied.
repeatedly.by.different.donors.onto.the.same.recipient..Such.a.multiple.con-
jugation.is.applicable.where.recombination.takes.place.directly.on.the.phe-
notype. [55].. A. study. on. the. eficiency. of. conjugation. for. a. practical. design.
problem.can.be.found.in.Perales-Gravan.and.Lahoz-Beltra.[45].
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