Initial native people .
Generating Anthropological and Archeological Hypotheses in Okinawa through Agent-Based Simulation
• Number of agents : 1800
• Sex proportion : male and female 50 % each
• Trait gene : NN
• Spatial placement : uniformly and randomly placed
• Food production system : hunting and gathering
• Marriage institution : monogamous
• Pottery style : native style
• MtDNA haplogroup : In total , 0.0 % had haplogroup D4 , 47 % had haplogroup M7a , and 53 % had another haplogroup . With reference to Shinoda and Doi ( 2008 ), Shinoda , Kakuda , and Doi ( 2012 ), and Shinoda , Kakuda , and Doi ( 2013 ), we calculated the frequencies except for the haplogroup D4 , which was derived from the Japanese mainland .
Initial immigrants .
• Number of agents : 200
• Sex proportion : male and female 50 % each
• Trait gene : MM
• Spatial placement : placed in the center of the upper side of the simulated space [ X : 25 , Y : 50 ]
• Food production system : agriculture
• Marriage institution : monogamous or polygamous in each simulation case
• Pottery style : immigrant style
• MtDNA haplogroup : With reference to Sakahira ( 2007 ), the frequency of mtDNA of medieval people on the Japanese mainland , 53.0 % had haplogroup D4 , 7 % had haplogroup M7a , and 40 % had another haplogroup .
2.6 Number of Simulation Cases and the Evaluation Index
There were a total of 180 simulation cases — that is , cases combining each of
the above-mentioned parameters . In each simulation run , the number of agents might increase from 200 to 20,000 . This means that each run takes very long computation time . Thus , although the numbers of runs are not enough ,
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