Matrix representation of the semi grim strategy (Breitmoser 2015). The strategy plays C if both players played C, and D if both players played D. If one player played D and the other C, play C with some probability.
Usage
data(SGRIM)
Arguments
Format
A matrix with 1 row and 6 columns:
Rows
Each row corresponds to one states of the automaton.
Column 1
Enumerates the states of the automaton.
Column 2
Probability to play C given the current state of the automaton.
Column 3
State transition if the history of play in the last round was CC (input is 1).
Column 4
State transition if the history of play in the last round was CD (input is 2).
Column 5
State transition if the history of play in the last round was DC (input is 3).
Column 6
State transition if the history of play in the last round was DD (input is 4).
References
Breitmoser, Y. (2015): Cooperation, but no reciprocity: Individual strategies in the repeated prisoner's dilemma, American Economic Review, 105, 2882-2910.