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Revision 14 . . December 8, 2004 10:04 pm by RichardP [Revert to rev. 12]
  

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Changed: 1,49c1
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A quick run through the model increasing the number of connections.

Changed: 51,52c3,68
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Summary




In populations of GiftAgent, BarterAgent, ProfitSeekingBarterAgent and MoneyAgent, the code was run with increasing numbers of connection, in both locally and randomly connected social networks.

Details




Used Optimaes 1.02, with 4 resources, 30 agents. Results averaged over 100 runs.

Results




||Agent Type || Net Type || Agents || Arcs || Res. || Runs || Steps || Alive || Surplus || Production || sDevs || Mean ||
||GiftAgent || Local || 30 || 3 || 4 || 100 || 10 || 7.710000 || 303.700000 || 527.100000 || 7.061208 || 9.889576 ||
||GiftAgent || Local || 30 || 6 || 4 || 100 || 10 || 12.696970 || 384.212121 || 805.121212 || 5.618239 || 7.584577 ||
||GiftAgent || Local || 30 || 9 || 4 || 100 || 10 || 14.010000 || 402.100000 || 880.600000 || 5.562663 || 7.223868 ||
||GiftAgent || Local || 30 || 12 || 4 || 100 || 10 || 15.850000 || 415.660000 || 968.160000 || 4.833630 || 6.591247 ||
||GiftAgent || Local || 30 || 15 || 4 || 100 || 10 || 17.460000 || 446.650000 || 1078.050000 || 4.712572 || 6.408819 ||
||GiftAgent || Random || 30 || 3 || 4 || 100 || 10 || 9.530000 || 332.740000 || 626.940000 || 6.449238 || 8.750250 ||
||GiftAgent || Random || 30 || 6 || 4 || 100 || 10 || 11.484848 || 341.363636 || 726.414141 || 5.588579 || 7.487318 ||
||GiftAgent || Random || 30 || 9 || 4 || 100 || 10 || 13.343434 || 374.353535 || 824.252525 || 5.165048 || 7.117884 ||
||GiftAgent || Random || 30 || 12 || 4 || 100 || 10 || 16.480000 || 425.810000 || 1004.810000 || 4.939961 || 6.516473 ||
||GiftAgent || Random || 30 || 15 || 4 || 100 || 10 || 15.640000 || 394.390000 || 952.290000 || 4.756035 || 6.352649 ||

|Agent Type | Net Type | Agents | Arcs | Res. | Runs | Steps | Alive | Surplus | Production | sDevs | Mean
|BarterAgent | Local | 30 | 3 | 4 | 100 | 10 | 6.110000 | 274.950000 | 438.850000 | 7.502790 | 11.176319
|BarterAgent | Local | 30 | 6 | 4 | 100 | 10 | 5.686869 | 254.101010 | 411.878788 | 7.447474 | 11.201897
|BarterAgent | Local | 30 | 9 | 4 | 100 | 10 | 5.838384 | 252.343434 | 407.393939 | 7.503487 | 10.796056
|BarterAgent | Local | 30 | 12 | 4 | 100 | 10 | 6.380000 | 284.330000 | 454.330000 | 7.415562 | 11.115942
|BarterAgent | Local | 30 | 15 | 4 | 100 | 10 | 6.580000 | 296.860000 | 470.860000 | 7.604870 | 11.232868
|BarterAgent | Random | 30 | 3 | 4 | 100 | 10 | 5.560000 | 242.140000 | 389.940000 | 7.288254 | 10.965821
|BarterAgent | Random | 30 | 6 | 4 | 100 | 10 | 6.275510 | 278.744898 | 450.377551 | 7.725060 | 11.014967
|BarterAgent | Random | 30 | 9 | 4 | 100 | 10 | 6.410000 | 283.280000 | 456.280000 | 7.701673 | 11.001144
|BarterAgent | Random | 30 | 12 | 4 | 100 | 10 | 6.760000 | 299.560000 | 488.760000 | 7.585220 | 11.117382
|BarterAgent | Random | 30 | 15 | 4 | 100 | 10 | 6.191919 | 272.616162 | 436.151515 | 7.457935 | 11.096374



|Agent Type | Net Type | Agents | Arcs | Res. | Runs | Steps | Alive | Surplus | Production | sDevs | Mean
|ProfitSeekingBarterAgent | Local | 30 | 3 | 4 | 100 | 10 | 6.202020 | 276.737374 | 437.343434 | 7.559255 | 11.181782
|ProfitSeekingBarterAgent | Local | 30 | 6 | 4 | 100 | 10 | 6.313131 | 285.070707 | 449.616162 | 7.640452 | 11.267631
|ProfitSeekingBarterAgent | Local | 30 | 9 | 4 | 100 | 10 | 6.070707 | 268.262626 | 432.000000 | 7.626959 | 11.131173
|ProfitSeekingBarterAgent | Local | 30 | 12 | 4 | 100 | 10 | 6.010000 | 278.790000 | 434.090000 | 7.816471 | 11.565275
|ProfitSeekingBarterAgent | Local | 30 | 15 | 4 | 100 | 10 | 5.990000 | 263.910000 | 423.810000 | 7.415522 | 10.929223
|ProfitSeekingBarterAgent | Random | 30 | 3 | 4 | 100 | 10 | 5.710000 | 251.570000 | 404.470000 | 7.389512 | 10.988393
|ProfitSeekingBarterAgent | Random | 30 | 6 | 4 | 100 | 10 | 5.878788 | 256.737374 | 416.535354 | 7.581857 | 10.880284
|ProfitSeekingBarterAgent | Random | 30 | 9 | 4 | 100 | 10 | 5.780000 | 259.130000 | 411.530000 | 7.579971 | 11.300760
|ProfitSeekingBarterAgent | Random | 30 | 12 | 4 | 100 | 10 | 5.824742 | 263.701031 | 425.350515 | 7.575228 | 11.385213
|ProfitSeekingBarterAgent | Random | 30 | 15 | 4 | 100 | 10 | 6.150000 | 277.460000 | 437.560000 | 7.611709 | 11.279588

|Agent Type | Net Type | Agents | Arcs | Res. | Runs | Steps | Alive | Surplus | Production | sDevs | Mean
|MoneyAgent | Local | 30 | 3 | 4 | 100 | 10 | 6.224490 | 276.367347 | 443.816327 | 7.542502 | 10.987289
|MoneyAgent | Local | 30 | 6 | 4 | 100 | 10 | 7.181818 | 292.525253 | 490.202020 | 6.708796 | 10.095621
|MoneyAgent | Local | 30 | 9 | 4 | 100 | 10 | 7.618557 | 291.329897 | 500.608247 | 6.592947 | 9.581968
|MoneyAgent | Local | 30 | 12 | 4 | 100 | 10 | 8.960000 | 323.180000 | 582.280000 | 6.199362 | 9.078804
|MoneyAgent | Local | 30 | 15 | 4 | 100 | 10 | 9.730000 | 340.090000 | 625.390000 | 5.925523 | 8.744505
|MoneyAgent | Random | 30 | 3 | 4 | 100 | 10 | 6.390000 | 273.730000 | 451.230000 | 7.138206 | 10.628590
|MoneyAgent | Random | 30 | 6 | 4 | 100 | 10 | 7.515152 | 298.454545 | 510.373737 | 6.825804 | 10.004340
|MoneyAgent | Random | 30 | 9 | 4 | 100 | 10 | 7.590000 | 288.320000 | 502.220000 | 6.340775 | 9.469562
|MoneyAgent | Random | 30 | 12 | 4 | 100 | 10 | 8.878788 | 325.787879 | 585.282828 | 6.197794 | 9.216011
|MoneyAgent | Random | 30 | 15 | 4 | 100 | 10 | 9.430000 | 340.100000 | 613.700000 | 6.040663 | 8.973902

Conclusion




Gift and Money agents both show improvements from increased numbers of social connections. No obvious trend for Barter agents, and Profit seeking barter seems to be worse off with more connections. Maybe the population is still too small for real effects of barter and profit seeking in barter to appear.

Don't quite trust this Barter result so any suggestions are welcome ...

Software error:

Can't locate object method "startform" via package "CGI" at optimaes.cgi line 1479.

For help, please send mail to the webmaster ([no address given]), giving this error message and the time and date of the error.