0.50

0.45

0.40

0.35

0.30

0.25

0.20

0.15

0.10

0.05

0 0 10 20 30 40 50 60 70 80 90 100

Mean fault tolerance estimation error

Mea

n lo

ad b

alan

ce e

stim

atio

n er

ror (

sec)

No-entropy Entropy-100% Entropy-90% Entropy-80% Entropy-70% Old-algorithm

0.9

0.8

0.7

0.6

0.5

0.4

0.3

0.2 0 10 20 30 40 50 60 70

Optimization size

Util

izat

ion

reso

urce

s

Genetic-algorithm

Ant colony-algorithm

Particle swarm-algorithm