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f2

f1

w

w2

1B

C

A

decrea

singF

f2

f1

w

w2

1

decrea

singF

A

B

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0

2000

4000

6000

8000

10000

0 2000 4000 6000 8000 10000

f_2

f_1

0

1

2

3

4

5

6

7

8

9

0 1 2 3 4 5 6 7 8 9

f_2

f_1

0

0.5

1

1.5

2

2.5

3

3.5

4

0 0.5 1 1.5 2 2.5 3 3.5 4

f_2

f_1

0

0.5

1

1.5

2

2.5

3

3.5

4

0 0.5 1 1.5 2 2.5 3 3.5 4

f_2

f_1

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x2

x1

-20

-15

-10

-5

0

5

10

15

20

-20 - 15 - 10 -5 0 5 10 15 20

-20

-15

-10

-5

0

5

10

15

20

-20 - 15 - 10 -5 0 5 10 15 20

x2

x1

-20

-15

-10

-5

0

5

10

15

20

-20 - 15 - 10 -5 0 5 10 15 20

x2

x1

-20

-15

-10

-5

0

5

10

15

20

-20 - 15 - 10 -5 0 5 10 15 20

x2

x1

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-2

0

2

4

6

8

10

12

0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1

f_2

f_1

Pareto-optimal frontRandom solutions

-0.6

-0.4

-0.2

0

0.2

0.4

0.6

0.8

1

0 0.2 0.4 0.6 0.8 1

f_2

f_1

Pareto-optimal frontNSGA

b

t

hl

F

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0

0.005

0.01

0.015

0.02

0.025

0.03

0.035

0.04

0.045

0.05

0 5 10 15 20 25 30 35 40 45 50

Deflection

Cost

0

0.001

0.002

0.003

0.004

0.005

0.006

0.007

0.008

0.009

0.01

0 5 10 15 20 25 30 35 40 45 50

Deflection

Cost

t=0t=5

t=20t=50

0

0.001

0.002

0.003

0.004

0.005

0.006

0.007

0.008

0.009

0.01

0 5 10 15 20 25 30 35 40 45 50

Deflection

Cost

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