Figure 4
From: Random allocation of pies promotes the evolution of fairness in the Ultimatum Game
Schematic diagram of (a) local and (b) global random allocation scheme.
In the diagram, the player at the end of the arrow plays as a proposer, while the one at the front of the arrow acts as a responder for each Ultimatum Game. The size of pie allocated to each Ultimatum Game is denoted at the middle of the arrow. Ri (Rj) is the pie to be split in one of the two Ultimatum Games played between player i and j, in which i (j) acts as the proposer and j (i) as the responder at time t. For both local and global random allocation scheme, the pies are randomly allocated to the Ultimatum Games. The difference lies in that the total size of pie Ri + Rj = 2 to be split between i and j is constant for local random allocation scheme.
