3 New Strategies From the PRISON (http://www.lifl.fr/IPD/ipd.frame.html) #715
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Hi! Just looked at Issue #379 and implemented 3 new strategies. Hope this helps 😄 |
| """ | ||
| It begins by defecting in the first five moves, then cooperates two times. | ||
| It then defects all the time if the opponent has defected in move 6 and 7, | ||
| else cooperates all the time. |
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Could you add a sentence here saying that this is designed to stop Gradual from winning? (And possibly why?)
| if len(self.history) < 7: | ||
| return firstseven[len(self.history)] | ||
| # React to the opponent's 6th and 7th moves | ||
| elif opponent.history[5:7] == [D, D]: |
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This can just be an if statement.
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We've spoken, it must be elif
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| class GrudgerAlternator(Player): | ||
| """ | ||
| A player starts by cooperating until the first opponents defenction, |
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| Names: | ||
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| - c_then_per_dc: [PRISON1998]_ |
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Can you also add GrudgerAlternator to this list?
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| class EasyGo(Player): | ||
| """ | ||
| A player starts by defecting however will cooperate if at any point the opponent has defected. |
| @@ -18,3 +18,4 @@ documentation. | |||
| .. [Stewart2012] Stewart, a. J., & Plotkin, J. B. (2012). Extortion and cooperation in the Prisoner’s Dilemma. Proceedings of the National Academy of Sciences, 109(26), 10134–10135. http://doi.org/10.1073/pnas.1208087109 | |||
| .. [Szabó1992] Szabó, G., & Fáth, G. (2007). Evolutionary games on graphs. Physics Reports, 446(4-6), 97–216. http://doi.org/10.1016/j.physrep.2007.04.004 | |||
| .. [Tzafestas2000] Tzafestas, E. (2000). Toward adaptive cooperative behavior. From Animals to Animals: Proceedings of the 6th International Conference on the Simulation of Adaptive Behavior {(SAB-2000)}, 2, 334–340. | |||
| .. [PRISON1998] LIFL (1998) PRISON. Available at: http://www.lifl.fr/IPD/ipd.frame.html (Accessed: 19 September 2016). | |||
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Is there no academic reference?
| expected_response = [D if r % 2 == 0 else C for r in range(j)] | ||
| self.responses_test(my_hist, opp_hist, expected_response) | ||
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Can you get rid of the extra lines? Should be 2.
| def strategy(self, opponent): | ||
| """This is the actual strategy""" | ||
| # First seven moves | ||
| firstseven = [D, D, D, D, D, C, C] |
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We have the @initial_sequence decorator to handle this
| # return D | ||
| # return C | ||
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| if len(self.history) >= 7: |
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I think this condition is redundant now that the decorator is being used
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Wouldn't this line:
if opponent.history[5:7] == [D, D]:
not break before the 7th round?
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The decorator should override it in the early turns. Try it!
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I try to be once a month or so!
| } | ||
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| def strategy(self, opponent): | ||
| """This is the actual strategy""" |
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Please delete this line and the commented lines below.
| Names: | ||
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| - c_then_per_dc: [PRISON1998]_ | ||
| - GrudgerAlternator |
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Can you make this something like:
- Grudger Alternator: Original name by Geraint Palmer
Or whatever self attribution you would like to use?
EasyGo
GrudgerAlternator
GradualKiller