1 | import logging
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2 | import time
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3 | from random import randint
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4 | from tokenize import Number
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5 | from typing import cast, Set
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6 | from decimal import Decimal
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7 | import math
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8 |
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9 | from geniusweb.actions.Accept import Accept
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10 | from geniusweb.actions.Action import Action
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11 | from geniusweb.actions.Offer import Offer
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12 | from geniusweb.actions.PartyId import PartyId
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13 | from geniusweb.bidspace.AllBidsList import AllBidsList
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14 | from geniusweb.inform.ActionDone import ActionDone
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15 | from geniusweb.inform.Finished import Finished
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16 | from geniusweb.inform.Inform import Inform
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17 | from geniusweb.inform.Settings import Settings
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18 | from geniusweb.inform.YourTurn import YourTurn
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19 | from geniusweb.issuevalue.Bid import Bid
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20 | from geniusweb.issuevalue.Domain import Domain
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21 | from geniusweb.issuevalue.Value import Value
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22 | from geniusweb.issuevalue.ValueSet import ValueSet
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23 | from geniusweb.party.Capabilities import Capabilities
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24 | from geniusweb.party.DefaultParty import DefaultParty
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25 | from geniusweb.profile.utilityspace import ValueSetUtilities
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26 | from geniusweb.profile.utilityspace.UtilitySpace import UtilitySpace
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27 | from geniusweb.profileconnection.ProfileConnectionFactory import (
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28 | ProfileConnectionFactory,
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29 | )
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30 | from geniusweb.progress.ProgressRounds import ProgressRounds
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31 | from tudelft_utilities_logging.Reporter import Reporter
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32 |
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33 |
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34 | class Agent50(DefaultParty):
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35 | """
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36 | Template agent that offers random bids until a bid with sufficient utility is offered.
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37 | """
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38 |
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39 | def __init__(self, reporter: Reporter = None):
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40 | super().__init__(reporter)
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41 | self.getReporter().log(logging.INFO, "party is initialized")
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42 | self._profile = None
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43 | self._last_received_bid: Bid = None
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44 | self._last_send_bid: Bid = None
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45 | self._incoming_bids: list[(Bid, Decimal)] = []
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46 | self._aspiration_level: Decimal = 1.0
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47 | self._asp_c = 0
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48 | self._ordered_issue_values: dict[str, list[str]] = {}
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49 | self._ordered_issue_values_is_initialized = False
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50 |
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51 | def notifyChange(self, info: Inform):
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52 | """This is the entry point of all interaction with your agent after is has been initialised.
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53 |
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54 | Args:
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55 | info (Inform): Contains either a request for action or information.
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56 | """
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57 |
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58 | # a Settings message is the first message that will be send to your
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59 | # agent containing all the information about the negotiation session.
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60 | if isinstance(info, Settings):
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61 | self._settings: Settings = cast(Settings, info)
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62 | self._me = self._settings.getID()
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63 |
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64 | # progress towards the deadline has to be tracked manually through the use of the Progress object
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65 | self._progress: ProgressRounds = self._settings.getProgress()
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66 |
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67 | # the profile contains the preferences of the agent over the domain
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68 | self._profile = ProfileConnectionFactory.create(
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69 | info.getProfile().getURI(), self.getReporter()
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70 | )
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71 | # ActionDone is an action send by an opponent (an offer or an accept)
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72 | elif isinstance(info, ActionDone):
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73 | action: Action = cast(ActionDone, info).getAction()
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74 |
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75 | # if it is an offer, set the last received bid
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76 | if isinstance(action, Offer):
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77 | self._last_received_bid = cast(Offer, action).getBid()
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78 |
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79 | # YourTurn notifies you that it is your turn to act
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80 | elif isinstance(info, YourTurn):
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81 | action = self._myTurn()
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82 | if isinstance(self._progress, ProgressRounds):
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83 | self._progress = self._progress.advance()
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84 | self.getConnection().send(action)
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85 |
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86 | # Finished will be send if the negotiation has ended (through agreement or deadline)
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87 | elif isinstance(info, Finished):
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88 | # terminate the agent MUST BE CALLED
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89 | self.terminate()
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90 | else:
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91 | self.getReporter().log(
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92 | logging.WARNING, "Ignoring unknown info " + str(info)
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93 | )
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94 |
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95 | # lets the geniusweb system know what settings this agent can handle
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96 | # leave it as it is for this competition
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97 | def getCapabilities(self) -> Capabilities:
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98 | return Capabilities(
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99 | set(["SAOP"]),
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100 | set(["geniusweb.profile.utilityspace.LinearAdditive"]),
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101 | )
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102 |
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103 | # terminates the agent and its connections
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104 | # leave it as it is for this competition
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105 | def terminate(self):
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106 | self.getReporter().log(logging.INFO, "party is terminating:")
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107 | super().terminate()
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108 | if self._profile is not None:
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109 | self._profile.close()
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110 | self._profile = None
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111 |
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112 |
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113 |
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114 | # Description of the agent
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115 | def getDescription(self) -> str:
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116 | return "Agent50"
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117 |
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118 | # Turn handler for the trade-off agent
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119 | def _myTurn(self):
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120 | # On the first turn, initialize the ordered issue values
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121 | if not self._ordered_issue_values_is_initialized:
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122 | self.initializeIssueValues()
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123 |
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124 | # Compute the utility value of the incoming bid
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125 | utility_value: Decimal = self._calculateUtilityValue(self._last_received_bid)
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126 |
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127 | # log the incoming bid
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128 | self._incoming_bids.append((self._last_received_bid, utility_value))
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129 |
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130 | # Check for a deadlock (when the utility value of the incoming bid is lower than that of the previous incoming bid)
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131 | # If so, decrease aspiration level (can be time-dependent) -> this is where the concession is made
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132 | if (
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133 | len(self._incoming_bids) > 1
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134 | and utility_value < self._incoming_bids[-2][1]
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135 | ):
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136 | self._decreaseAspirationLevel()
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137 |
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138 | # Generate a bid at the current aspiration level and set it as the last sent bid
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139 | next_bid: Bid = self._generateBid()
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140 | self._last_send_bid = next_bid
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141 |
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142 | # If the incoming bid is good enough, accept (when the received offer is better than last proposed offer)
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143 | if self._isAcceptable(self._last_received_bid):
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144 | action = Accept(self._me, self._last_received_bid)
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145 | else: # Else, offer the generated bid
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146 | action = Offer(self._me, next_bid)
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147 |
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148 | return action
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149 |
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150 | # Get the fraction of unique incoming bids
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151 | def _getFractionUniqueIncomingBids(self):
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152 | unique_received_bids = set([x[0] for x in self._incoming_bids])
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153 | return (
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154 | len(unique_received_bids) / len(self._incoming_bids)
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155 | if len(self._incoming_bids) >= 1
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156 | else 1
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157 | )
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158 |
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159 | # Decreases the aspiration level depending on fraction of unique incoming bids and progress
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160 | def _decreaseAspirationLevel(self):
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161 | fraction_progress = self._progress.get(time.time() * 1000)
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162 | self._aspiration_level -= (
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163 | 0.002 * (self._getFractionUniqueIncomingBids() + 0.5)
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164 | ) * (math.pow(fraction_progress, 2) + 1)
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165 |
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166 | # Calculates the utility value of the given bid
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167 | def _calculateUtilityValue(self, bid: Bid) -> Decimal:
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168 | if not bid:
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169 | return 0
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170 | return self._profile.getProfile().getUtility(bid)
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171 |
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172 | # Returns true iff the given bid is better than the last proposed bid and the reservation value (ACnext)
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173 | def _isAcceptable(self, bid: Bid) -> bool:
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174 | # Not acceptable if bid is None or there is no last send bid
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175 | if not bid or not self._last_send_bid:
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176 | return False
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177 |
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178 | # Calculate utility value of the bid
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179 | uv = self._calculateUtilityValue(bid)
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180 |
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181 | reservation_bid = self._profile.getProfile().getReservationBid()
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182 | # Check if utility value of bid is higher than last proposed bid and the reservation bid
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183 | if not reservation_bid:
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184 | return uv >= self._calculateUtilityValue(self._last_send_bid)
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185 | else:
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186 | return uv > self._calculateUtilityValue(
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187 | reservation_bid
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188 | ) and uv >= self._calculateUtilityValue(self._last_send_bid)
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189 |
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190 | # Compute the variability of given issue
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191 | def _computeVariability(self, issue: str) -> Decimal:
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192 | # No variability if there is only one bid
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193 | if len(self._incoming_bids) < 2:
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194 | return 0
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195 |
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196 | # Get the total of changes between successive bids
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197 | changes = 0
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198 | n = len(self._incoming_bids) - 1
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199 | for i in range(n):
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200 | if (
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201 | not self._incoming_bids[n - 1]
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202 | or not self._incoming_bids[n - 1][0]
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203 | or not self._incoming_bids[n - (i + 1)]
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204 | or not self._incoming_bids[n - (i + 1)][0]
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205 | ):
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206 | continue
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207 | if self._incoming_bids[n - i][0].getValue(issue) != self._incoming_bids[
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208 | n - (i + 1)
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209 | ][0].getValue(issue):
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210 | changes += 1
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211 |
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212 | # Variability is total changes divided by total bids
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213 | return changes / n
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214 |
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215 | # Bid generator for the trade-off agent
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216 | def _generateBid(self) -> Bid:
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217 | # Calculate the variance of each issue in the bids of the opposing party
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218 | variabilities = []
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219 | for issue in self._profile.getProfile().getDomain().getIssues():
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220 | variabilities.append((issue, self._computeVariability(issue)))
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221 |
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222 | # Order issues in the most recent incoming bid by variance, descending
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223 | # (assumption: higher variance issues are less important for the opponent)
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224 | variabilities.sort(key=lambda x: x[1], reverse=True)
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225 | issues_sorted_by_variance = [v[0] for v in variabilities]
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226 | bid_values = (
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227 | self._last_received_bid.getIssueValues().copy()
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228 | if self._last_received_bid
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229 | else dict()
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230 | )
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231 |
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232 | if len(bid_values) < len(variabilities):
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233 | bid_values = dict()
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234 | for issue in issues_sorted_by_variance:
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235 | bid_values[issue] = list(self._ordered_issue_values[issue])[-1]
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236 |
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237 | new_proposed_bid = Bid(bid_values)
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238 |
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239 | # Raise the value of each issue incrementally until the aspiration level has been reached
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240 | # Max out the first issue, if that does not reach the aspiration level, continue to the next issue
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241 | for issue in issues_sorted_by_variance:
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242 | ordered_values = list(self._ordered_issue_values[issue])
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243 | current_value = bid_values[issue]
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244 | index = ordered_values.index(current_value)
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245 | while (index < len(ordered_values)) & (
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246 | self._calculateUtilityValue(new_proposed_bid) < self._aspiration_level
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247 | ):
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248 | bid_values[issue] = ordered_values[index]
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249 | new_proposed_bid = Bid(bid_values)
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250 | index += 1
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251 |
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252 | # Decrease aspiration level if new proposed bid is the same as last proposed bid
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253 | if self._last_send_bid and new_proposed_bid == self._last_send_bid:
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254 | self._decreaseAspirationLevel()
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255 |
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256 | # Return the bid
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257 | return new_proposed_bid
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258 |
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259 | # Initializes the data structure storing the issue values ordered by utility value (ascending)
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260 | def initializeIssueValues(self):
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261 | profile = self._profile.getProfile()
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262 |
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263 | utilities_per_value_per_issue: dict[
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264 | str, ValueSetUtilities
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265 | ] = profile.getUtilities()
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266 |
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267 | # Loop through all the issues in the domain
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268 | domain = profile.getDomain().getIssuesValues()
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269 | for issue in domain:
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270 | # Get the issue and utility values for the current issue
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271 | utility_values = utilities_per_value_per_issue[issue].getUtilities()
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272 | # Sort the issue values by their utility values, ascending
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273 | values_sorted_by_utility = dict(
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274 | sorted(utility_values.items(), key=lambda item: item[1])
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275 | )
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276 | # Store the results
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277 | self._ordered_issue_values[issue] = values_sorted_by_utility.keys()
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278 |
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279 | # Change the state variable to note that the data structure has been initialized
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280 | self._ordered_issue_values_is_initialized = True
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