def calculateNewRatings(self, gameInfo, teams, teamRanks): '''Implementation for a 2 player game. returns a list of tuples of (player, newRating)''' argumentNotNone(gameInfo, "gameInfo") self._validateTeamCountAndPlayersCountPerTeam(teams) teams, teamRanks = sortByRank(teams, teamRanks) winningTeamPlayers = teams[0].asListOfTuples #since we know each team has one player, we know the player is the first one winningPlayer = winningTeamPlayers[0][0] winningPlayerOldRating = winningTeamPlayers[0][1] losingTeamPlayers = teams[1].asListOfTuples losingPlayer = losingTeamPlayers[0][0] losingPlayerOldRating = losingTeamPlayers[0][1] wasDraw = (teamRanks[0] == teamRanks[1]) results = list() results.append( (winningPlayer, self._calculateNewRating( gameInfo, winningPlayerOldRating, losingPlayerOldRating, PairwiseComparison.DRAW if wasDraw else PairwiseComparison.WIN) )) results.append( (losingPlayer, self._calculateNewRating( gameInfo, losingPlayerOldRating, winningPlayerOldRating, PairwiseComparison.DRAW if wasDraw else PairwiseComparison.LOSE) )) return results
def calculateNewRatings(self, gameInfo, teams, teamRanks): argumentNotNone(gameInfo, "gameInfo") self._validateTeamCountAndPlayersCountPerTeam(teams) teams, teamRanks = sortByRank(teams, teamRanks) factorGraph = TrueSkillFactorGraph(gameInfo, teams, teamRanks) factorGraph.buildGraph() factorGraph.runSchedule() return factorGraph.getUpdatedRatings()
def calculateMatchQuality(self, gameInfo, teams): argumentNotNone(gameInfo, "gameInfo") self._validateTeamCountAndPlayersCountPerTeam(teams) player1Rating = teams[0].asListOfTuples[0][1] player2Rating = teams[1].asListOfTuples[0][1] betaSquared = (gameInfo.beta**2.0) player1SigmaSquared = (player1Rating.standardDeviation**2.0) player2SigmaSquared = (player2Rating.standardDeviation**2.0) sqrtPart = sqrt((2.0*betaSquared) / (2.0*betaSquared + player1SigmaSquared + player2SigmaSquared)) expPart = e**((-1.0*((player1Rating.mean - player2Rating.mean)**2.0)) / (2.0*(2.0*betaSquared + player1SigmaSquared + player2SigmaSquared))) return sqrtPart*expPart
def calculateNewRatings(self, gameInfo, teams, teamRanks): '''Implementation for a 2 team game. Returns a list of tuples of (player, rating)''' argumentNotNone(gameInfo, "gameInfo") self._validateTeamCountAndPlayersCountPerTeam(teams) teams, teamRanks = sortByRank(teams, teamRanks) team1 = teams[0] team2 = teams[1] wasDraw = (teamRanks[0] == teamRanks[1]) results = list() self._updatePlayerRatings(gameInfo, results, team1, team2, PairwiseComparison.DRAW if wasDraw else PairwiseComparison.WIN) self._updatePlayerRatings(gameInfo, results, team2, team1, PairwiseComparison.DRAW if wasDraw else PairwiseComparison.LOSE) return results
def calculateMatchQuality(self, gameInfo, teams): argumentNotNone(gameInfo, "gameInfo") self._validateTeamCountAndPlayersCountPerTeam(teams) team1 = teams[0] team2 = teams[1] totalPlayers = team1.size + team2.size betaSquared = gameInfo.beta**2.0 team1MeanSum = team1.meanSum team1StdDevSum = team1.standardDeviationSquaredSum team2MeanSum = team2.meanSum team2StdDevSum = team2.standardDeviationSquaredSum sqrtPart = sqrt((totalPlayers*betaSquared) / (totalPlayers*betaSquared + team1StdDevSum + team2StdDevSum)) expPart = e**((-1.0*(team1MeanSum - team2MeanSum)**2.0) / (2*(totalPlayers*betaSquared +team1StdDevSum + team2StdDevSum))) return sqrtPart * expPart
