U

a1

a2

a3

a4

x1

0.6

0.7

0

1

x2

0.9

0.5

0.1

0.9

x3

0.2

0.7

0.5

1

x4

0.9

0.5

0.1

0.9

x5

0.3

0.5

0.1

0.9

x6

0.6

0.7

0

1