Table 1 : Simulations of Resource Use Without Sanctions -Dynamic Over Time
Human Nash |
Artificial agents, |
Artificial agents, | ||
agents | ||||
H Equilibriu ’ |
T=32 (3) |
T=64 T=400 |
pm=0.02 pm=0.01 | |
(1) m (2) |
(4) (5) |
pc=0.40 pc=0.00 | ||
(6) (7) | ||||
GROUP RESULTS | ||||
X - Resource use 0.95 confidence interval on X |
131.32 128.00 [127.25, - 135.39] |
131.02 |
130.40 130.02 [130.35, [129.98, 130.45] 130.06] |
130.52 129.82 |
σ(X) -Standard deviation of use over time |
12.95 0.00 |
17.50 |
15.03 14.04 |
14.53 9.51 |
Efficiency |
28.4% 39.5% |
26.85% |
29.75% 31.16% |
29.75% 33.55% |
Periods with negative earnings |
15.5% 0.00% |
19.59% |
16.00% 14.97% |
16.12% 8.22% |
INDIVIDUAL RESULTS | ||||
MAX2 -Agent with maximum use (2) |
37.92 16.00 |
28.71 |
27.72 27.01 |
25.04 25.89 |
MIN2 - Agent with minimum use (3) |
9.57 16.00 |
5.93 |
8.75 11.35 |
9.31 9.81 |
D2 - Individual difference, (2)-(3) SD2 -Individual use standard deviation Test of H0 {XH=XGA} Test of H0 {SD2H=SD2GA} |
28.35 0.00 9.05 0.00 [5.13, - 33.42] |
22.78 18.97 15.66 5.76 4.79 4.09 [5.04, 6.65] [4.19, 5.53] [3.58, 4.72] Cannot Cannot Cannot Cannot p-value= H0 rejected reject H0 0.05________________ |
15.73 16.08 | |
Notes to Table 1: T=total periods of simulation; 32 periods considered in |
the statistics, T-32,...,T. If T=32 all |
the periods of the simulation are included in the | ||
statistics. The basic action is the use level of the resource, xitk, by agent i Q |
=1,..,8 at period t=1,..,T for run k=1 |
,..,100 (random seeds 0.005 through 0.995). The | ||
aggregate resource use Xtk= ∑ xitk and its average |
for each run is Xk = |
1 ∑Xtk |
. The significance tests are carried out, using Xk as a single observation, |
under the null hypothesis H0 that the random variables Zi are iid and normally distributed. Parameters of the GA: K=6, N=8, L=8, pm=0.02; GA v.5.0.
Table 3: Simulations of Resource Use - Impact of Strategy Space
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