Biomedical Engineering Reference
In-Depth Information
0.6
0.4
0.3
0.2
0.1
0
0.4
0.2
0
1
25
25
1
20
0.8
0.8
20
0.6
15
0.6
15
0.4
0.4
10
10
0.2
0.2
5
5
parameter index
0
jumping rate
parameter index
0
jumping rate
Performance on convergence
Performance on diversity
(c)
0.015
1
0.01
0.5
0.005
0
0
25
1
25
1
0.8
20
0.8
20
0.6
15
0.6
15
0.4
0.4
10
10
0.2
0.2
5
5
0
0
parameter index
jumping rate
parameter index
jumping rate
Performance on convergence
Performance on diversity
(d)
Figure 5.1 (CONTiNueD)
did.not.attain.the.best.convergence.for.any.test.function,.the.difference.between.
its.score.and.that.of.the.winner.for.each.test.function.was.small..Therefore,.it.
can.be.concluded.that.the.JG.showed.good.performance.for.convergence.
5.7.2.2  Mean and Standard Deviation of Spread for Evaluating Diversity
Tables 5.6 . and .5.7 . list.the.means.and.standard.deviations.of.the.diversity.met-
ric.spread.for.the.unconstrained.test.functions.with.binary.and.real-number.
coding,.respectively..As.can.be.observed,.the.JG.was.capable.of.finding.the.
most.diverse.nondominated.solutions.for.the.test.functions.SCH,.FON,.POL,.
ZIT4.(in.binary.coding).and.ZIT1,.ZIT2,.and.ZIT4.(in.real-number.coding)..
For.the.remaining.test.functions,.the.difference.between.its.score.and.that.of.
the.winner.was.small.
The. means. and. standard. deviations. of. the. spread. for. the. con-
strained. test. functions. are. tabulated. in . Table  5.8 .. The. JG. found. the. most.
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