def __init__(self, p_sneaky=0.1):
d = "JOSS defaults to cooperation on the first turn, and "+\
"thereafter mirrors its partner's previous move, except after its "+\
"partner cooperates JOSS defects with some probability to see what "+\
"it can get away with every once in a while."
BotPlayer.__init__(self, "JOSS_" + str(p_sneaky), description=d)
self.p_sneaky = p_sneaky
def __init__(self):
d = "TESTER initially defects to test what the other player will do. "+\
"If the other player defects ever, TESTER apologizes by cooperating "+\
"and then mirrors the partner's moves thereafter. If the other "+\
"player does not retaliate, TESTER cooperates twice but then defects "+\
"on and off every other turn."
BotPlayer.__init__(self, "TESTER", description=d)
def __init__(self, p_sneaky=0.1):
d = "JOSS defaults to cooperation on the first turn, and "+\
"thereafter mirrors its partner's previous move, except after its "+\
"partner cooperates JOSS defects with some probability to see what "+\
"it can get away with every once in a while."
BotPlayer.__init__(self, "JOSS_"+str(p_sneaky), description=d)
self.p_sneaky = p_sneaky
def __init__(self):
d = "TESTER initially defects to test what the other player will do. "+\
"If the other player defects ever, TESTER apologizes by cooperating "+\
"and then mirrors the partner's moves thereafter. If the other "+\
"player does not retaliate, TESTER cooperates twice but then defects "+\
"on and off every other turn."
BotPlayer.__init__(self, "TESTER", description=d)
def __init__(self):
d = "PAVLOV defaults to cooperation on the first turn, and "+\
"thereafter cooperates if and only if both players made the same "+\
"choice last turn. This is known as 'win-stay, lose-shift', because "+\
"PAVLOV repeats its own last move after it receives T or R (the good "+\
"scores) and changes its move after it receives P or S (the bad "+\
"scores), like a reflex demonstrated in Pavlov's dog experiment."
BotPlayer.__init__(self, "PAVLOV", d)
def __init__(self):
d = "PAVLOV defaults to cooperation on the first turn, and "+\
"thereafter cooperates if and only if both players made the same "+\
"choice last turn. This is known as 'win-stay, lose-shift', because "+\
"PAVLOV repeats its own last move after it receives T or R (the good "+\
"scores) and changes its move after it receives P or S (the bad "+\
"scores), like a reflex demonstrated in Pavlov's dog experiment."
BotPlayer.__init__(self, "PAVLOV", d)
def __init__(self, p_generous=0.1):
d = "GENEROUS_TIT_FOR_TAT defaults to cooperation on the first turn, "+\
"and thereafter mirrors its partner's previous move, except after "+\
"its partner defects GENEROUS_TIT_FOR_TAT cooperates with some "+\
"probability to forgive occasional mistakes and avoid unnecessary "+\
"mutual punishment."
BotPlayer.__init__(self, "GENEROUS_TIT_FOR_TAT_"+str(p_generous),\
description=d)
self.p_generous = p_generous
def __init__(self, p_generous=0.1):
d = "GENEROUS_TIT_FOR_TAT defaults to cooperation on the first turn, "+\
"and thereafter mirrors its partner's previous move, except after "+\
"its partner defects GENEROUS_TIT_FOR_TAT cooperates with some "+\
"probability to forgive occasional mistakes and avoid unnecessary "+\
"mutual punishment."
BotPlayer.__init__(self, "GENEROUS_TIT_FOR_TAT_"+str(p_generous),\
description=d)
self.p_generous = p_generous
def __init__(self, p_cooperate=0.5):
d = "CHAMPION cooperates for about 1/20 of the expected length of "+\
"interaction, mirrors its partner's previous move for about 3/40 of "+\
"the expected length of interaction, and then cooperates unless all "+\
"three of the following conditions are true: its partner defected "+\
"last turn, its partner cooperated less than 60% of the time, and "+\
"a randomly generated number between 0 and 1 is less than its "+\
"partner's defection rate."
BotPlayer.__init__(self, "CHAMPION", description=d)
def __init__(self, p_cooperate=0.5):
d = "CHAMPION cooperates for about 1/20 of the expected length of "+\
"interaction, mirrors its partner's previous move for about 3/40 of "+\
"the expected length of interaction, and then cooperates unless all "+\
"three of the following conditions are true: its partner defected "+\
"last turn, its partner cooperated less than 60% of the time, and "+\
"a randomly generated number between 0 and 1 is less than its "+\
"partner's defection rate."
BotPlayer.__init__(self, "CHAMPION", description=d)
def __init__(self, nice=True):
d = "STATBOT cooperates, then defects, then after that calculates its average score per move"+\
" for cooperation and defect and chooses whichever one is higher, in the case of a tie, "+\
"NICE_STATBOT cooperates and MEAN_STATBOT defects"
self.nice = nice
if nice:
n = 'NICE_STATBOT'
else:
n = 'MEAN_STATBOT'
BotPlayer.__init__(self, n, d)
def __init__(self, soft=True):
d = "MAJORITY cooperates as long as its partner has cooperated more "+\
"than it has defected (if partner has cooperated and defected equal "+\
"amounts, MAJORITY cooperates if it is soft and defects if it is "+\
"hard)."
if soft:
name = "MAJORITY_SOFT"
else:
name = "MAJORITY_HARD"
BotPlayer.__init__(self, name, description=d)
self.soft = soft
def __init__(self, soft=True):
d = "MAJORITY cooperates as long as its partner has cooperated more "+\
"than it has defected (if partner has cooperated and defected equal "+\
"amounts, MAJORITY cooperates if it is soft and defects if it is "+\
"hard)."
if soft:
name = "MAJORITY_SOFT"
else:
name = "MAJORITY_HARD"
BotPlayer.__init__(self, name, description=d)
self.soft = soft
def __init__(self, optimistic=True):
d = "DOWNING tries to maximize expected gains by testing the water "+\
"with its partner. The idea is that if its partner seems responsive "+\
"to what DOWNING is doing, DOWNING will cooperate, but if the other "+\
"player seems unresponsive, DOWNING will try to get away with "+\
"whatever it can by defecting. DOWNING does this by keeping an "+\
"estimate of the probability of the other player cooperating given "+\
"DOWNING's last move. The initial estimates depend on DOWNING's "+\
"outlook (optimistic or pessimistic)."
if optimistic:
name = "OPT_DOWNING"
elif not optimistic:
name = "PESS_DOWNING"
BotPlayer.__init__(self, name, description=d)
self.optimistic = optimistic
def __init__(self, optimistic=True):
d = "DOWNING tries to maximize expected gains by testing the water "+\
"with its partner. The idea is that if its partner seems responsive "+\
"to what DOWNING is doing, DOWNING will cooperate, but if the other "+\
"player seems unresponsive, DOWNING will try to get away with "+\
"whatever it can by defecting. DOWNING does this by keeping an "+\
"estimate of the probability of the other player cooperating given "+\
"DOWNING's last move. The initial estimates depend on DOWNING's "+\
"outlook (optimistic or pessimistic)."
if optimistic:
name = "OPT_DOWNING"
elif not optimistic:
name = "PESS_DOWNING"
BotPlayer.__init__(self, name, description=d)
self.optimistic = optimistic
def __init__(self):
d = "FRIEDMAN is the permanent retaliator. It cooperates until its "+\
"partner defects, after which FRIEDMAN defects for the rest of the "+\
"interaction."
BotPlayer.__init__(self, "FRIEDMAN", description=d)
def __init__(self):
d = "SUSPICIOUS_TIT_FOR_TAT defaults to defection on the first turn, "+\
"and thereafter mirrors its partner's previous move."
BotPlayer.__init__(self, "SUSPICIOUS_TIT_FOR_TAT", description=d)
def __init__(self):
d = "ALL_C cooperates unconditionally."
BotPlayer.__init__(self, "ALL_C", description=d)
def __init__(self, p_cooperate=0.5):
d = "RANDOM chooses randomly between cooperation and defection with "+\
"some specified probability for each, independent of its partner's "+\
"moves."
BotPlayer.__init__(self, "RANDOM_" + str(p_cooperate), description=d)
self.p_cooperate = p_cooperate
def __init__(self, p_cooperate=0.5):
d = "RANDOM chooses randomly between cooperation and defection with "+\
"some specified probability for each, independent of its partner's "+\
"moves."
BotPlayer.__init__(self, "RANDOM_"+str(p_cooperate), description=d)
self.p_cooperate = p_cooperate
def __init__(self):
d = "ALL_D defects unconditionally."
BotPlayer.__init__(self, "ALL_D", description=d)
def __init__(self):
d = "TWO_TITS_FOR_TAT cooperates unless its partner defects in which "+\
"case TWO_TITS_FOR_TAT retaliates with two defections."
BotPlayer.__init__(self, "TWO_TITS_FOR_TAT", description=d)
def __init__(self):
d = "ALL_D defects unconditionally."
BotPlayer.__init__(self, "ALL_D", description=d)
def __init__(self):
d = "FRIEDMAN is the permanent retaliator. It cooperates until its "+\
"partner defects, after which FRIEDMAN defects for the rest of the "+\
"interaction."
BotPlayer.__init__(self, "FRIEDMAN", description=d)
def __init__(self):
## TODO: read pages 45-46 of Axelrod and describe this
d = None
BotPlayer.__init__(self, "TRANQUILIZER", d)
def __init__(self):
## TODO: read pages 45-46 of Axelrod and describe this
d = None
BotPlayer.__init__(self, "TRANQUILIZER", d)
def __init__(self):
d = "EATHERLY defaults to cooperation, but keeps track of how many "+\
"times the other player has defected, so after a defection by the "+\
"other player, EATHERLY can defect with probability equal to the "+\
"ratio of its partner's defections to the total number of moves so far."
BotPlayer.__init__(self, "EATHERLY", d)
def __init__(self):
d = "TWO_TITS_FOR_TAT cooperates unless its partner defects in which "+\
"case TWO_TITS_FOR_TAT retaliates with two defections."
BotPlayer.__init__(self, "TWO_TITS_FOR_TAT", description=d)
def __init__(self):
d = "SUSPICIOUS_TIT_FOR_TAT defaults to defection on the first turn, "+\
"and thereafter mirrors its partner's previous move."
BotPlayer.__init__(self, "SUSPICIOUS_TIT_FOR_TAT", description=d)
def __init__(self):
d = "ALL_C cooperates unconditionally."
BotPlayer.__init__(self, "ALL_C", description=d)
def __init__(self):
d = "EATHERLY defaults to cooperation, but keeps track of how many "+\
"times the other player has defected, so after a defection by the "+\
"other player, EATHERLY can defect with probability equal to the "+\
"ratio of its partner's defections to the total number of moves so far."
BotPlayer.__init__(self, "EATHERLY", d)
def __init__(self):
d = "TIT_FOR_TAT defaults to cooperation on the first turn, and "+\
"thereafter mirrors its partner's previous move."
BotPlayer.__init__(self, "TIT_FOR_TAT", description=d)
def __init__(self):
d = "TIT_FOR_TWO_TATS defects if and only if its partner has "+\
"defected for the past two turns."
BotPlayer.__init__(self, "TIT_FOR_TWO_TATS", description=d)
def __init__(self):
d = "TIT_FOR_TAT defaults to cooperation on the first turn, and "+\
"thereafter mirrors its partner's previous move."
BotPlayer.__init__(self, "TIT_FOR_TAT", description=d)
def __init__(self):
d = "TIT_FOR_TWO_TATS defects if and only if its partner has "+\
"defected for the past two turns."
BotPlayer.__init__(self, "TIT_FOR_TWO_TATS", description=d)