| 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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