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In-Depth Information
4 Experiment
4.1 Purpose and Conditions
In this experiment, we evaluated the production rate for various parameter set-
tings, and found the production rate limit for the given settings.
Tabl e 1.
Parameter settings
Parameter
Value
No. of agents
33
No. of skill types
L
50
Maximum event generation quantity
M
5, 10
Maximum event generation probability
P
0.10, 0.15, 0.20
Required workload
w
e
exp(0
.
05
t
e
)
Required skill
S
e
refer to
Tabl e 2
Reduction rate
R
e
refer to
Tabl e 2
No. of steps
6000
No. of iterations
50
Tabl e 2.
Event settings
Status
Conditions
Parameter
Value
Risk
0
≤ w
e
<
5
No. of 1s in
S
e
5
Reduction rate
R
e
0.05
Minor accident
5
≤ w
e
<
10
No. of 1s in
S
e
7
Reduction rate
R
e
0.15
Major accident
10
≤ w
e
<
15
No. of 1s in
S
e
22
Reduction rate
R
e
0.45
Fatal accident
15
≤ w
e
No. of 1s in
S
e
40
Reduction rate
R
e
1.0
Table 1 lists the parameter settings for this experiment. We defined required
workload
w
e
as a monotonically increased function that takes on
t
e
. We classified
the events into four types according to the current required workload
w
e
as listed
in Table 2. These settings represent that the problems worsen over time. The
number of skill types, which the worker agents have, was decided by using a
uniform distribution of between 7 to 15, which means the worker agents have
15 to 30 % of the necessary skills. The worker agents formed a tree structure,
as shown in Fig. 3. We evaluated the results by using the production rates in
percentages. All the results were obtained by using an averaging of 50 runs.
