The mockingbird: Find whatever method the current leader(s) is/are using to enable self-cooperation, and find the way to mimic them with a small advantage. (e.g. if they use a string of 0,1,4,5s to self-identify, spam 4 until they identify as you, then identify how to get into the side of mutual cooperation that is sometimes up a point.
Tit-for-tat with correction: Start with a even distribution, then play what they played last round, except if the total last round was above five and they played higher, reduce the value you played by the amout that exceeded five last round; if the total last round was below five and they played lower, increase the value you play this round by the shortfall. (If the values played were the same, adjust by half the difference, randomly selecting between two values if a .5 change is indicated. (Loses at most 5 points to fivebot, loses about half a point per round to threebot, leaves some on the table with twobot, but self-cooperates on round two with 80% probability.
The mockingbird: Find whatever method the current leader(s) is/are using to enable self-cooperation, and find the way to mimic them with a small advantage. (e.g. if they use a string of 0,1,4,5s to self-identify, spam 4 until they identify as you, then identify how to get into the side of mutual cooperation that is sometimes up a point.
Tit-for-tat with correction: Start with a even distribution, then play what they played last round, except if the total last round was above five and they played higher, reduce the value you played by the amout that exceeded five last round; if the total last round was below five and they played lower, increase the value you play this round by the shortfall. (If the values played were the same, adjust by half the difference, randomly selecting between two values if a .5 change is indicated. (Loses at most 5 points to fivebot, loses about half a point per round to threebot, leaves some on the table with twobot, but self-cooperates on round two with 80% probability.