public function calculateNewRatings(GameInfo $gameInfo, array $teams, array $teamRanks)
{
Guard::argumentNotNull($gameInfo, "gameInfo");
$this->validateTeamCountAndPlayersCountPerTeam($teams);
RankSorter::sort($teams, $teamRanks);
$factorGraph = new TrueSkillFactorGraph($gameInfo, $teams, $teamRanks);
$factorGraph->buildGraph();
$factorGraph->runSchedule();
$probabilityOfOutcome = $factorGraph->getProbabilityOfRanking();
return $factorGraph->getUpdatedRatings();
}
public function testSort()
{
$team1 = array("a" => 1, "b" => 2);
$team2 = array("c" => 3, "d" => 4);
$team3 = array("e" => 5, "f" => 6);
$teams = array($team1, $team2, $team3);
$teamRanks = array(3, 1, 2);
$sortedRanks = RankSorter::sort($teams, $teamRanks);
$this->assertEquals($team2, $sortedRanks[0]);
$this->assertEquals($team3, $sortedRanks[1]);
$this->assertEquals($team1, $sortedRanks[2]);
}
public function calculateNewRatings(GameInfo &$gameInfo, array $teams, array $teamRanks)
{
Guard::argumentNotNull($gameInfo, "gameInfo");
$this->validateTeamCountAndPlayersCountPerTeam($teams);
RankSorter::sort($teams, $teamRanks);
$team1 = $teams[0];
$team2 = $teams[1];
$wasDraw = $teamRanks[0] == $teamRanks[1];
$results = new RatingContainer();
self::updatePlayerRatings($gameInfo, $results, $team1, $team2, $wasDraw ? PairwiseComparison::DRAW : PairwiseComparison::WIN);
self::updatePlayerRatings($gameInfo, $results, $team2, $team1, $wasDraw ? PairwiseComparison::DRAW : PairwiseComparison::LOSE);
return $results;
}
public function calculateNewRatings($gameInfo, array $teamsOfPlayerToRatings, array $teamRanks)
{
$this->validateTeamCountAndPlayersCountPerTeam($teamsOfPlayerToRatings);
RankSorter::sort($teamsOfPlayerToRatings, $teamRanks);
$result = array();
$isDraw = $teamRanks[0] === $teamRanks[1];
$team1 = $teamsOfPlayerToRatings[0];
$team2 = $teamsOfPlayerToRatings[1];
$player1 = each($team1);
$player2 = each($team2);
$player1Rating = $player1["value"]->getMean();
$player2Rating = $player2["value"]->getMean();
$result[$player1["key"]] = $this->calculateNewRating($gameInfo, $player1Rating, $player2Rating, $isDraw ? PairwiseComparison::DRAW : PairwiseComparison::WIN);
$result[$player2["key"]] = $this->calculateNewRating($gameInfo, $player2Rating, $player1Rating, $isDraw ? PairwiseComparison::DRAW : PairwiseComparison::LOSE);
return $result;
}
public function calculateNewRatings(GameInfo $gameInfo, array $teams, array $teamRanks)
{
// Basic argument checking
Guard::argumentNotNull($gameInfo, "gameInfo");
$this->validateTeamCountAndPlayersCountPerTeam($teams);
// Make sure things are in order
$teams = RankSorter::sort($teams, $teamRanks);
// Since we verified that each team has one player, we know the player is the first one
$winningTeamPlayers = $teams[0]->getAllPlayers();
$winner = $winningTeamPlayers[0];
$winnerPreviousRating = $teams[0]->getRating($winner);
$losingTeamPlayers = $teams[1]->getAllPlayers();
$loser = $losingTeamPlayers[0];
$loserPreviousRating = $teams[1]->getRating($loser);
$wasDraw = $teamRanks[0] == $teamRanks[1];
$results = new RatingContainer();
$results->setRating($winner, self::calculateNewRating($gameInfo, $winnerPreviousRating, $loserPreviousRating, $wasDraw ? PairwiseComparison::DRAW : PairwiseComparison::WIN));
$results->setRating($loser, self::calculateNewRating($gameInfo, $loserPreviousRating, $winnerPreviousRating, $wasDraw ? PairwiseComparison::DRAW : PairwiseComparison::LOSE));
// And we're done!
return $results;
}
