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Pint applied for formatting

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This commit is contained in:
Alex Wulf
2022-07-05 15:55:47 +02:00
parent bfc558d1f2
commit 7d4547df6a
68 changed files with 670 additions and 402 deletions
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8
src/FactorGraphs/DefaultVariable.php
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@ -1,4 +1,6 @@
<?php namespace DNW\Skills\FactorGraphs;
<?php
namespace DNW\Skills\FactorGraphs;
use Exception;
@ -7,7 +9,7 @@ class DefaultVariable extends Variable
{
public function __construct()
{
parent::__construct("Default", null);
parent::__construct('Default', null);
}
public function getValue()
@ -19,4 +21,4 @@ class DefaultVariable extends Variable
{
throw new Exception();
}
}
}

31
src/FactorGraphs/Factor.php
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@ -1,20 +1,24 @@
<?php namespace DNW\Skills\FactorGraphs;
<?php
namespace DNW\Skills\FactorGraphs;
use Exception;
use DNW\Skills\Guard;
use DNW\Skills\HashMap;
use Exception;
abstract class Factor
{
private $_messages = array();
private $_messages = [];
private $_messageToVariableBinding;
private $_name;
private $_variables = array();
private $_variables = [];
protected function __construct($name)
{
$this->_name = "Factor[" . $name . "]";
$this->_name = 'Factor['.$name.']';
$this->_messageToVariableBinding = new HashMap();
}
@ -46,14 +50,17 @@ abstract class Factor
/**
* Update the message and marginal of the i-th variable that the factor is connected to
*
* @param $messageIndex
*
* @throws Exception
*/
public function updateMessageIndex($messageIndex)
{
Guard::argumentIsValidIndex($messageIndex, count($this->_messages), "messageIndex");
Guard::argumentIsValidIndex($messageIndex, count($this->_messages), 'messageIndex');
$message = $this->_messages[$messageIndex];
$variable = $this->_messageToVariableBinding->getValue($message);
return $this->updateMessageVariable($message, $variable);
}
@ -75,28 +82,32 @@ abstract class Factor
/**
* Sends the ith message to the marginal and returns the log-normalization constant
*
* @param $messageIndex
* @return
*
* @throws Exception
*/
public function sendMessageIndex($messageIndex)
{
Guard::argumentIsValidIndex($messageIndex, count($this->_messages), "messageIndex");
Guard::argumentIsValidIndex($messageIndex, count($this->_messages), 'messageIndex');
$message = $this->_messages[$messageIndex];
$variable = $this->_messageToVariableBinding->getValue($message);
return $this->sendMessageVariable($message, $variable);
}
protected abstract function sendMessageVariable(Message $message, Variable $variable);
abstract protected function sendMessageVariable(Message $message, Variable $variable);
public abstract function createVariableToMessageBinding(Variable $variable);
abstract public function createVariableToMessageBinding(Variable $variable);
protected function createVariableToMessageBindingWithMessage(Variable $variable, Message $message)
{
$this->_messageToVariableBinding->setValue($message, $variable);
$this->_messages[] = $message;
$this->_variables[] = $variable;
return $message;
}
@ -104,4 +115,4 @@ abstract class Factor
{
return $this->_name;
}
}
}

6
src/FactorGraphs/FactorGraph.php
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@ -1,4 +1,6 @@
<?php namespace DNW\Skills\FactorGraphs;
<?php
namespace DNW\Skills\FactorGraphs;
class FactorGraph
{
@ -13,4 +15,4 @@ class FactorGraph
{
$this->_variableFactory = $factory;
}
}
}

18
src/FactorGraphs/FactorGraphLayer.php
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@ -1,10 +1,16 @@
<?php namespace DNW\Skills\FactorGraphs;
<?php
namespace DNW\Skills\FactorGraphs;
// edit this
abstract class FactorGraphLayer
{
private $_localFactors = array();
private $_outputVariablesGroups = array();
private $_inputVariablesGroups = array();
private $_localFactors = [];
private $_outputVariablesGroups = [];
private $_inputVariablesGroups = [];
private $_parentFactorGraph;
protected function __construct(FactorGraph $parentGraph)
@ -54,7 +60,7 @@ abstract class FactorGraphLayer
$this->_localFactors[] = $factor;
}
public abstract function buildLayer();
abstract public function buildLayer();
public function createPriorSchedule()
{
@ -65,4 +71,4 @@ abstract class FactorGraphLayer
{
return null;
}
}
}

9
src/FactorGraphs/FactorList.php
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@ -1,11 +1,13 @@
<?php namespace DNW\Skills\FactorGraphs;
<?php
namespace DNW\Skills\FactorGraphs;
/**
* Helper class for computing the factor graph's normalization constant.
*/
class FactorList
{
private $_list = array();
private $_list = [];
public function getLogNormalization()
{
@ -45,6 +47,7 @@ class FactorList
public function addFactor(Factor $factor)
{
$this->_list[] = $factor;
return $factor;
}
}
}

6
src/FactorGraphs/KeyedVariable.php
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@ -1,4 +1,6 @@
<?php namespace DNW\Skills\FactorGraphs;
<?php
namespace DNW\Skills\FactorGraphs;
class KeyedVariable extends Variable
{
@ -14,4 +16,4 @@ class KeyedVariable extends Variable
{
return $this->_key;
}
}
}

9
src/FactorGraphs/Message.php
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@ -1,8 +1,11 @@
<?php namespace DNW\Skills\FactorGraphs;
<?php
namespace DNW\Skills\FactorGraphs;
class Message
{
private $_name;
private $_value;
public function __construct($value = null, $name = null)
@ -23,6 +26,6 @@ class Message
public function __toString()
{
return (string)$this->_name;
return (string) $this->_name;
}
}
}

8
src/FactorGraphs/Schedule.php
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@ -1,4 +1,6 @@
<?php namespace DNW\Skills\FactorGraphs;
<?php
namespace DNW\Skills\FactorGraphs;
abstract class Schedule
{
@ -9,10 +11,10 @@ abstract class Schedule
$this->_name = $name;
}
public abstract function visit($depth = -1, $maxDepth = 0);
abstract public function visit($depth = -1, $maxDepth = 0);
public function __toString()
{
return $this->_name;
}
}
}

7
src/FactorGraphs/ScheduleLoop.php
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@ -1,8 +1,11 @@
<?php namespace DNW\Skills\FactorGraphs;
<?php
namespace DNW\Skills\FactorGraphs;
class ScheduleLoop extends Schedule
{
private $_maxDelta;
private $_scheduleToLoop;
public function __construct($name, Schedule $scheduleToLoop, $maxDelta)
@ -23,4 +26,4 @@ class ScheduleLoop extends Schedule
return $delta;
}
}
}

6
src/FactorGraphs/ScheduleSequence.php
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@ -1,4 +1,6 @@
<?php namespace DNW\Skills\FactorGraphs;
<?php
namespace DNW\Skills\FactorGraphs;
class ScheduleSequence extends Schedule
{
@ -22,4 +24,4 @@ class ScheduleSequence extends Schedule
return $maxDelta;
}
}
}

8
src/FactorGraphs/ScheduleStep.php
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@ -1,8 +1,11 @@
<?php namespace DNW\Skills\FactorGraphs;
<?php
namespace DNW\Skills\FactorGraphs;
class ScheduleStep extends Schedule
{
private $_factor;
private $_index;
public function __construct($name, Factor $factor, $index)
@ -16,6 +19,7 @@ class ScheduleStep extends Schedule
{
$currentFactor = $this->_factor;
$delta = $currentFactor->updateMessageIndex($this->_index);
return $delta;
}
}
}

7
src/FactorGraphs/Variable.php
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@ -1,15 +1,18 @@
<?php
namespace DNW\Skills\FactorGraphs;
class Variable
{
private $_name;
private $_prior;
private $_value;
public function __construct($name, $prior)
{
$this->_name = "Variable[" . $name . "]";
$this->_name = 'Variable['.$name.']';
$this->_prior = $prior;
$this->resetToPrior();
}
@ -33,4 +36,4 @@ class Variable
{
return $this->_name;
}
}
}

6
src/FactorGraphs/VariableFactory.php
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@ -1,4 +1,6 @@
<?php namespace DNW\Skills\FactorGraphs;
<?php
namespace DNW\Skills\FactorGraphs;
class VariableFactory
{
@ -14,6 +16,7 @@ class VariableFactory
{
$initializer = $this->_variablePriorInitializer;
$newVar = new Variable($name, $initializer());
return $newVar;
}
@ -21,6 +24,7 @@ class VariableFactory
{
$initializer = $this->_variablePriorInitializer;
$newVar = new KeyedVariable($key, $name, $initializer());
return $newVar;
}
}

15
src/GameInfo.php
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@ -1,4 +1,6 @@
<?php namespace DNW\Skills;
<?php
namespace DNW\Skills;
/**
* Parameters about the game for calculating the TrueSkill.
@ -6,15 +8,23 @@
class GameInfo
{
const DEFAULT_BETA = 4.1666666666666666666666666666667; // Default initial mean / 6
const DEFAULT_DRAW_PROBABILITY = 0.10;
const DEFAULT_DYNAMICS_FACTOR = 0.083333333333333333333333333333333; // Default initial mean / 300
const DEFAULT_INITIAL_MEAN = 25.0;
const DEFAULT_INITIAL_STANDARD_DEVIATION = 8.3333333333333333333333333333333; // Default initial mean / 3
private $_initialMean;
private $_initialStandardDeviation;
private $_beta;
private $_dynamicsFactor;
private $_drawProbability;
public function __construct($initialMean = self::DEFAULT_INITIAL_MEAN,
@ -30,7 +40,6 @@ class GameInfo
$this->_drawProbability = $drawProbability;
}
public function getInitialMean()
{
return $this->_initialMean;
@ -60,4 +69,4 @@ class GameInfo
{
return new Rating($this->_initialMean, $this->_initialStandardDeviation);
}
}
}

12
src/Guard.php
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@ -1,4 +1,6 @@
<?php namespace DNW\Skills;
<?php
namespace DNW\Skills;
use Exception;
@ -12,21 +14,21 @@ class Guard
public static function argumentNotNull($value, $parameterName)
{
if ($value == null) {
throw new Exception($parameterName . " can not be null");
throw new Exception($parameterName.' can not be null');
}
}
public static function argumentIsValidIndex($index, $count, $parameterName)
{
if (($index < 0) || ($index >= $count)) {
throw new Exception($parameterName . " is an invalid index");
throw new Exception($parameterName.' is an invalid index');
}
}
public static function argumentInRangeInclusive($value, $min, $max, $parameterName)
{
if (($value < $min) || ($value > $max)) {
throw new Exception($parameterName . " is not in the valid range [" . $min . ", " . $max . "]");
throw new Exception($parameterName.' is not in the valid range ['.$min.', '.$max.']');
}
}
}
}

15
src/HashMap.php
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@ -1,17 +1,21 @@
<?php namespace DNW\Skills;
<?php
namespace DNW\Skills;
/**
* Basic hashmap that supports object keys.
*/
class HashMap
{
private $_hashToValue = array();
private $_hashToKey = array();
private $_hashToValue = [];
private $_hashToKey = [];
public function getValue($key)
{
$hash = self::getHash($key);
$hashValue = $this->_hashToValue[$hash];
return $hashValue;
}
@ -20,18 +24,21 @@ class HashMap
$hash = self::getHash($key);
$this->_hashToKey[$hash] = $key;
$this->_hashToValue[$hash] = $value;
return $this;
}
public function getAllKeys()
{
$keys = array_values($this->_hashToKey);
return $keys;
}
public function getAllValues()
{
$values = array_values($this->_hashToValue);
return $values;
}
@ -48,4 +55,4 @@ class HashMap
return $key;
}
}
}

6
src/ISupportPartialPlay.php
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@ -1,4 +1,6 @@
<?php namespace DNW\Skills;
<?php
namespace DNW\Skills;
/**
* Indicates support for allowing partial play (where a player only plays a part of the time).
@ -9,4 +11,4 @@ interface ISupportPartialPlay
* Indicates the percent of the time the player should be weighted where 0.0 indicates the player didn't play and 1.0 indicates the player played 100% of the time.
*/
public function getPartialPlayPercentage();
}
}

6
src/ISupportPartialUpdate.php
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@ -1,4 +1,6 @@
<?php namespace DNW\Skills;
<?php
namespace DNW\Skills;
interface ISupportPartialUpdate
{
@ -6,4 +8,4 @@ interface ISupportPartialUpdate
* Indicated how much of a skill update a player should receive where 0.0 represents no update and 1.0 represents 100% of the update.
*/
public function getPartialUpdatePercentage();
}
}

16
src/Numerics/BasicMath.php
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@ -1,4 +1,6 @@
<?php namespace DNW\Skills\Numerics;
<?php
namespace DNW\Skills\Numerics;
/**
* Basic math functions.
@ -8,10 +10,10 @@
*/
class BasicMath
{
/**
* Squares the input (x^2 = x * x)
* @param number $x Value to square (x)
*
* @param number $x Value to square (x)
* @return number The squared value (x^2)
*/
public static function square($x)
@ -21,13 +23,15 @@ class BasicMath
/**
* Sums the items in $itemsToSum
* @param array $itemsToSum The items to sum,
* @param callback $callback The function to apply to each array element before summing.
*
* @param array $itemsToSum The items to sum,
* @param callable $callback The function to apply to each array element before summing.
* @return number The sum.
*/
public static function sum(array $itemsToSum, $callback)
{
$mappedItems = array_map($callback, $itemsToSum);
return array_sum($mappedItems);
}
}
}

6
src/Numerics/DiagonalMatrix.php
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@ -1,4 +1,6 @@
<?php namespace DNW\Skills\Numerics;
<?php
namespace DNW\Skills\Numerics;
class DiagonalMatrix extends Matrix
{
@ -20,4 +22,4 @@ class DiagonalMatrix extends Matrix
}
}
}
}
}

21
src/Numerics/GaussianDistribution.php
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@ -1,4 +1,6 @@
<?php namespace DNW\Skills\Numerics;
<?php
namespace DNW\Skills\Numerics;
/**
* Computes Gaussian (bell curve) values.
@ -9,12 +11,15 @@
class GaussianDistribution
{
private $_mean;
private $_standardDeviation;
// precision and precisionMean are used because they make multiplying and dividing simpler
// (the the accompanying math paper for more details)
private $_precision;
private $_precisionMean;
private $_variance;
public function __construct($mean = 0.0, $standardDeviation = 1.0)
@ -76,6 +81,7 @@ class GaussianDistribution
$result->_variance = $this->_variance;
$result->_precision = $this->_precision;
$result->_precisionMean = $this->_precisionMean;
return $result;
}
@ -94,6 +100,7 @@ class GaussianDistribution
$result->_standardDeviation = \INF;
$result->_mean = \NAN;
}
return $result;
}
@ -129,6 +136,7 @@ class GaussianDistribution
$meanDifference = $left->_mean - $right->_mean;
$logSqrt2Pi = log(sqrt(2 * M_PI));
return -$logSqrt2Pi - (log($varianceSum) / 2.0) - (BasicMath::square($meanDifference) / (2.0 * $varianceSum));
}
@ -165,6 +173,7 @@ class GaussianDistribution
$multiplier = 1.0 / ($standardDeviation * sqrt(2 * M_PI));
$expPart = exp((-1.0 * BasicMath::square($x - $mean)) / (2 * BasicMath::square($standardDeviation)));
$result = $multiplier * $expPart;
return $result;
}
@ -172,6 +181,7 @@ class GaussianDistribution
{
$invsqrt2 = -0.707106781186547524400844362104;
$result = GaussianDistribution::errorFunctionCumulativeTo($invsqrt2 * $x);
return 0.5 * $result;
}
@ -183,7 +193,7 @@ class GaussianDistribution
$t = 2.0 / (2.0 + $z);
$ty = 4 * $t - 2;
$coefficients = array(
$coefficients = [
-1.3026537197817094,
6.4196979235649026e-1,
1.9476473204185836e-2,
@ -211,7 +221,7 @@ class GaussianDistribution
-1.523e-15,
-9.4e-17,
1.21e-16,
-2.8e-17);
-2.8e-17, ];
$ncof = count($coefficients);
$d = 0.0;
@ -224,6 +234,7 @@ class GaussianDistribution
}
$ans = $t * exp(-$z * $z + 0.5 * ($coefficients[0] + $ty * $d) - $dd);
return ($x >= 0.0) ? $ans : (2.0 - $ans);
}
@ -258,6 +269,6 @@ class GaussianDistribution
public function __toString()
{
return sprintf("mean=%.4f standardDeviation=%.4f", $this->_mean, $this->_standardDeviation);
return sprintf('mean=%.4f standardDeviation=%.4f', $this->_mean, $this->_standardDeviation);
}
}
}

6
src/Numerics/IdentityMatrix.php
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@ -1,4 +1,6 @@
<?php namespace DNW\Skills\Numerics;
<?php
namespace DNW\Skills\Numerics;
class IdentityMatrix extends DiagonalMatrix
{
@ -6,4 +8,4 @@ class IdentityMatrix extends DiagonalMatrix
{
parent::__construct(array_fill(0, $rows, 1));
}
}
}

35
src/Numerics/Matrix.php
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@ -1,4 +1,6 @@
<?php namespace DNW\Skills\Numerics;
<?php
namespace DNW\Skills\Numerics;
use Exception;
@ -7,7 +9,9 @@ class Matrix
const ERROR_TOLERANCE = 0.0000000001;
private $_matrixRowData;
private $_rowCount;
private $_columnCount;
public function __construct($rows = 0, $columns = 0, $matrixData = null)
@ -19,7 +23,7 @@ class Matrix
public static function fromColumnValues($rows, $columns, $columnValues)
{
$data = array();
$data = [];
$result = new Matrix($rows, $columns, $data);
for ($currentColumn = 0; $currentColumn < $columns; $currentColumn++) {
@ -73,7 +77,7 @@ class Matrix
public function getTranspose()
{
// Just flip everything
$transposeMatrix = array();
$transposeMatrix = [];
$rowMatrixData = $this->_matrixRowData;
for ($currentRowTransposeMatrix = 0;
@ -98,8 +102,8 @@ class Matrix
public function getDeterminant()
{
// Basic argument checking
if (!$this->isSquare()) {
throw new Exception("Matrix must be square!");
if (! $this->isSquare()) {
throw new Exception('Matrix must be square!');
}
if ($this->_rowCount == 1) {
@ -117,6 +121,7 @@ class Matrix
$b = $this->_matrixRowData[0][1];
$c = $this->_matrixRowData[1][0];
$d = $this->_matrixRowData[1][1];
return $a * $d - $b * $c;
}
@ -141,8 +146,8 @@ class Matrix
public function getAdjugate()
{
if (!$this->isSquare()) {
throw new Exception("Matrix must be square!");
if (! $this->isSquare()) {
throw new Exception('Matrix must be square!');
}
// See http://en.wikipedia.org/wiki/Adjugate_matrix
@ -165,7 +170,7 @@ class Matrix
}
// The idea is that it's the transpose of the cofactors
$result = array();
$result = [];
for ($currentColumn = 0; $currentColumn < $this->_columnCount; $currentColumn++) {
for ($currentRow = 0; $currentRow < $this->_rowCount; $currentRow++) {
@ -194,7 +199,7 @@ class Matrix
{
$rows = $matrix->getRowCount();
$columns = $matrix->getColumnCount();
$newValues = array();
$newValues = [];
for ($currentRow = 0; $currentRow < $rows; $currentRow++) {
for ($currentColumn = 0; $currentColumn < $columns; $currentColumn++) {
@ -212,12 +217,12 @@ class Matrix
||
($left->getColumnCount() != $right->getColumnCount())
) {
throw new Exception("Matrices must be of the same size");
throw new Exception('Matrices must be of the same size');
}
// simple addition of each item
$resultMatrix = array();
$resultMatrix = [];
for ($currentRow = 0; $currentRow < $left->getRowCount(); $currentRow++) {
for ($currentColumn = 0; $currentColumn < $right->getColumnCount(); $currentColumn++) {
@ -237,13 +242,13 @@ class Matrix
// See http://en.wikipedia.org/wiki/Matrix_multiplication for details
if ($left->getColumnCount() != $right->getRowCount()) {
throw new Exception("The width of the left matrix must match the height of the right matrix");
throw new Exception('The width of the left matrix must match the height of the right matrix');
}
$resultRows = $left->getRowCount();
$resultColumns = $right->getColumnCount();
$resultMatrix = array();
$resultMatrix = [];
for ($currentRow = 0; $currentRow < $resultRows; $currentRow++) {
for ($currentColumn = 0; $currentColumn < $resultColumns; $currentColumn++) {
@ -268,7 +273,7 @@ class Matrix
// See http://en.wikipedia.org/wiki/Minor_(linear_algebra)
// I'm going to use a horribly naïve algorithm... because I can :)
$result = array();
$result = [];
$actualRow = 0;
@ -334,4 +339,4 @@ class Matrix
return true;
}
}
}

14
src/Numerics/Range.php
View File

@ -1,4 +1,6 @@
<?php namespace DNW\Skills\Numerics;
<?php
namespace DNW\Skills\Numerics;
// The whole purpose of this class is to make the code for the SkillCalculator(s)
// look a little cleaner
@ -8,13 +10,13 @@ use Exception;
class Range
{
private $_min;
private $_max;
public function __construct($min, $max)
{
if ($min > $max)
{
throw new Exception("min > max");
if ($min > $max) {
throw new Exception('min > max');
}
$this->_min = $min;
@ -50,11 +52,11 @@ class Range
public static function atLeast($minimumValue)
{
return static::create($minimumValue, PHP_INT_MAX );
return static::create($minimumValue, PHP_INT_MAX);
}
public function isInRange($value)
{
return ($this->_min <= $value) && ($value <= $this->_max);
}
}
}

10
src/Numerics/SquareMatrix.php
View File

@ -1,14 +1,16 @@
<?php namespace DNW\Skills\Numerics;
<?php
namespace DNW\Skills\Numerics;
class SquareMatrix extends Matrix
{
public function __construct()
{
$allValues = func_get_args();
$rows = (int)sqrt(count($allValues));
$rows = (int) sqrt(count($allValues));
$cols = $rows;
$matrixData = array();
$matrixData = [];
$allValuesIndex = 0;
for ($currentRow = 0; $currentRow < $rows; $currentRow++) {
@ -19,4 +21,4 @@ class SquareMatrix extends Matrix
parent::__construct($rows, $cols, $matrixData);
}
}
}

10
src/Numerics/Vector.php
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@ -1,13 +1,15 @@
<?php namespace DNW\Skills\Numerics;
<?php
namespace DNW\Skills\Numerics;
class Vector extends Matrix
{
public function __construct(array $vectorValues)
{
$columnValues = array();
$columnValues = [];
foreach ($vectorValues as $currentVectorValue) {
$columnValues[] = array($currentVectorValue);
$columnValues[] = [$currentVectorValue];
}
parent::__construct(count($vectorValues), 1, $columnValues);
}
}
}

15
src/PairwiseComparison.php
View File

@ -1,24 +1,29 @@
<?php namespace DNW\Skills;
<?php
namespace DNW\Skills;
/**
* Represents a comparison between two players.
*
* @internal The actual values for the enum were chosen so that the also correspond to the multiplier for updates to means.
*/
class PairwiseComparison
{
const WIN = 1;
const DRAW = 0;
const LOSE = -1;
public static function getRankFromComparison($comparison)
{
switch ($comparison) {
case PairwiseComparison::WIN:
return array(1, 2);
return [1, 2];
case PairwiseComparison::LOSE:
return array(2, 1);
return [2, 1];
default:
return array(1, 1);
return [1, 1];
}
}
}
}

8
src/PartialPlay.php
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@ -1,4 +1,6 @@
<?php namespace DNW\Skills;
<?php
namespace DNW\Skills;
class PartialPlay
{
@ -6,7 +8,7 @@ class PartialPlay
{
// If the player doesn't support the interface, assume 1.0 == 100%
$supportsPartialPlay = $player instanceof ISupportPartialPlay;
if (!$supportsPartialPlay) {
if (! $supportsPartialPlay) {
return 1.0;
}
@ -20,4 +22,4 @@ class PartialPlay
return $partialPlayPercentage;
}
}
}

21
src/Player.php
View File

@ -1,4 +1,6 @@
<?php namespace DNW\Skills;
<?php
namespace DNW\Skills;
/**
* Represents a player who has a Rating.
@ -6,26 +8,29 @@
class Player implements ISupportPartialPlay, ISupportPartialUpdate
{
const DEFAULT_PARTIAL_PLAY_PERCENTAGE = 1.0; // = 100% play time
const DEFAULT_PARTIAL_UPDATE_PERCENTAGE = 1.0; // = receive 100% update
private $_Id;
private $_PartialPlayPercentage;
private $_PartialUpdatePercentage;
/**
* Constructs a player.
*
* @param mixed $id The identifier for the player, such as a name.
* @param number $partialPlayPercentage The weight percentage to give this player when calculating a new rank.
* @param number $partialUpdatePercentage Indicated how much of a skill update a player should receive where 0 represents no update and 1.0 represents 100% of the update.
* @param mixed $id The identifier for the player, such as a name.
* @param number $partialPlayPercentage The weight percentage to give this player when calculating a new rank.
* @param number $partialUpdatePercentage Indicated how much of a skill update a player should receive where 0 represents no update and 1.0 represents 100% of the update.
*/
public function __construct($id,
$partialPlayPercentage = self::DEFAULT_PARTIAL_PLAY_PERCENTAGE,
$partialUpdatePercentage = self::DEFAULT_PARTIAL_UPDATE_PERCENTAGE)
{
// If they don't want to give a player an id, that's ok...
Guard::argumentInRangeInclusive($partialPlayPercentage, 0.0, 1.0, "partialPlayPercentage");
Guard::argumentInRangeInclusive($partialUpdatePercentage, 0, 1.0, "partialUpdatePercentage");
Guard::argumentInRangeInclusive($partialPlayPercentage, 0.0, 1.0, 'partialPlayPercentage');
Guard::argumentInRangeInclusive($partialUpdatePercentage, 0, 1.0, 'partialUpdatePercentage');
$this->_Id = $id;
$this->_PartialPlayPercentage = $partialPlayPercentage;
$this->_PartialUpdatePercentage = $partialUpdatePercentage;
@ -57,6 +62,6 @@ class Player implements ISupportPartialPlay, ISupportPartialUpdate
public function __toString()
{
return (string)$this->_Id;
return (string) $this->_Id;
}
}
}

6
src/PlayersRange.php
View File

@ -1,4 +1,6 @@
<?php namespace DNW\Skills;
<?php
namespace DNW\Skills;
use DNW\Skills\Numerics\Range;
@ -13,4 +15,4 @@ class PlayersRange extends Range
{
return new PlayersRange($min, $max);
}
}
}

11
src/RankSorter.php
View File

@ -1,4 +1,6 @@
<?php namespace DNW\Skills;
<?php
namespace DNW\Skills;
/**
* Helper class to sort ranks in non-decreasing order.
@ -8,13 +10,14 @@ class RankSorter
/**
* Performs an in-place sort of the items in according to the ranks in non-decreasing order.
*
* @param array $teams The items to sort according to the order specified by ranks.
* @param array $teamRanks The ranks for each item where 1 is first place.
* @param array $teams The items to sort according to the order specified by ranks.
* @param array $teamRanks The ranks for each item where 1 is first place.
* @return array
*/
public static function sort(array &$teams, array &$teamRanks)
{
array_multisort($teamRanks, $teams);
return $teams;
}
}
}

21
src/Rating.php
View File

@ -1,4 +1,6 @@
<?php namespace DNW\Skills;
<?php
namespace DNW\Skills;
// Container for a player's rating.
use DNW\Skills\Numerics\GaussianDistribution;
@ -8,14 +10,17 @@ class Rating
const CONSERVATIVE_STANDARD_DEVIATION_MULTIPLIER = 3;
private $_conservativeStandardDeviationMultiplier;
private $_mean;
private $_standardDeviation;
/**
* Constructs a rating.
* @param double $mean The statistical mean value of the rating (also known as mu).
* @param double $standardDeviation The standard deviation of the rating (also known as s).
* @param float|int $conservativeStandardDeviationMultiplier optional The number of standardDeviations to subtract from the mean to achieve a conservative rating.
*
* @param float $mean The statistical mean value of the rating (also known as mu).
* @param float $standardDeviation The standard deviation of the rating (also known as s).
* @param float|int $conservativeStandardDeviationMultiplier optional The number of standardDeviations to subtract from the mean to achieve a conservative rating.
*/
public function __construct($mean, $standardDeviation, $conservativeStandardDeviationMultiplier = self::CONSERVATIVE_STANDARD_DEVIATION_MULTIPLIER)
{
@ -51,7 +56,7 @@ class Rating
public function getPartialUpdate(Rating $prior, Rating $fullPosterior, $updatePercentage)
{
$priorGaussian = new GaussianDistribution($prior->getMean(), $prior->getStandardDeviation());
$posteriorGaussian = new GaussianDistribution($fullPosterior->getMean(), $fullPosterior . getStandardDeviation());
$posteriorGaussian = new GaussianDistribution($fullPosterior->getMean(), $fullPosterior.getStandardDeviation());
// From a clarification email from Ralf Herbrich:
// "the idea is to compute a linear interpolation between the prior and posterior skills of each player
@ -60,7 +65,7 @@ class Rating
$precisionDifference = $posteriorGaussian->getPrecision() - $priorGaussian->getPrecision();
$partialPrecisionDifference = $updatePercentage * $precisionDifference;
$precisionMeanDifference = $posteriorGaussian->getPrecisionMean() - $priorGaussian . getPrecisionMean();
$precisionMeanDifference = $posteriorGaussian->getPrecisionMean() - $priorGaussian.getPrecisionMean();
$partialPrecisionMeanDifference = $updatePercentage * $precisionMeanDifference;
$partialPosteriorGaussion = GaussianDistribution::fromPrecisionMean(
@ -73,6 +78,6 @@ class Rating
public function __toString()
{
return sprintf("mean=%.4f, standardDeviation=%.4f", $this->_mean, $this->_standardDeviation);
return sprintf('mean=%.4f, standardDeviation=%.4f', $this->_mean, $this->_standardDeviation);
}
}
}

4
src/RatingContainer.php
View File

@ -1,4 +1,6 @@
<?php namespace DNW\Skills;
<?php
namespace DNW\Skills;
class RatingContainer
{

36
src/SkillCalculator.php
View File

@ -1,4 +1,6 @@
<?php namespace DNW\Skills;
<?php
namespace DNW\Skills;
use Exception;
@ -8,7 +10,9 @@ use Exception;
abstract class SkillCalculator
{
private $_supportedOptions;
private $_playersPerTeamAllowed;
private $_totalTeamsAllowed;
protected function __construct($supportedOptions, TeamsRange $totalTeamsAllowed, PlayersRange $playerPerTeamAllowed)
@ -20,24 +24,24 @@ abstract class SkillCalculator
/**
* Calculates new ratings based on the prior ratings and team ranks.
* @param GameInfo $gameInfo Parameters for the game.
* @param array $teamsOfPlayerToRatings A mapping of team players and their ratings.
* @param array $teamRanks The ranks of the teams where 1 is first place. For a tie, repeat the number (e.g. 1, 2, 2).
*
* @param GameInfo $gameInfo Parameters for the game.
* @param array $teamsOfPlayerToRatings A mapping of team players and their ratings.
* @param array $teamRanks The ranks of the teams where 1 is first place. For a tie, repeat the number (e.g. 1, 2, 2).
* @return All the players and their new ratings.
*/
public abstract function calculateNewRatings(GameInfo $gameInfo,
abstract public function calculateNewRatings(GameInfo $gameInfo,
array $teamsOfPlayerToRatings,
array $teamRanks);
/**
* Calculates the match quality as the likelihood of all teams drawing.
*
* @param GameInfo $gameInfo Parameters for the game.
* @param array $teamsOfPlayerToRatings A mapping of team players and their ratings.
* @param GameInfo $gameInfo Parameters for the game.
* @param array $teamsOfPlayerToRatings A mapping of team players and their ratings.
* @return The quality of the match between the teams as a percentage (0% = bad, 100% = well matched).
*/
public abstract function calculateMatchQuality(GameInfo $gameInfo, array $teamsOfPlayerToRatings);
abstract public function calculateMatchQuality(GameInfo $gameInfo, array $teamsOfPlayerToRatings);
public function isSupported($option)
{
@ -49,21 +53,19 @@ abstract class SkillCalculator
self::validateTeamCountAndPlayersCountPerTeamWithRanges($teamsOfPlayerToRatings, $this->_totalTeamsAllowed, $this->_playersPerTeamAllowed);
}
private static function validateTeamCountAndPlayersCountPerTeamWithRanges(array $teams,
TeamsRange $totalTeams,
PlayersRange $playersPerTeam)
private static function validateTeamCountAndPlayersCountPerTeamWithRanges(array $teams, TeamsRange $totalTeams, PlayersRange $playersPerTeam)
{
$countOfTeams = 0;
foreach ($teams as $currentTeam) {
if (!$playersPerTeam->isInRange(count($currentTeam))) {
throw new Exception("Player count is not in range");
if (! $playersPerTeam->isInRange(count($currentTeam))) {
throw new Exception('Player count is not in range');
}
$countOfTeams++;
}
if (!$totalTeams->isInRange($countOfTeams)) {
throw new Exception("Team range is not in range");
if (! $totalTeams->isInRange($countOfTeams)) {
throw new Exception('Team range is not in range');
}
}
}
@ -71,6 +73,8 @@ abstract class SkillCalculator
class SkillCalculatorSupportedOptions
{
const NONE = 0x00;
const PARTIAL_PLAY = 0x01;
const PARTIAL_UPDATE = 0x02;
}
}

10
src/Team.php
View File

@ -1,4 +1,6 @@
<?php namespace DNW\Skills;
<?php
namespace DNW\Skills;
class Team extends RatingContainer
{
@ -6,8 +8,7 @@ class Team extends RatingContainer
{
parent::__construct();
if(!is_null($player))
{
if (! is_null($player)) {
$this->addPlayer($player, $rating);
}
}
@ -15,6 +16,7 @@ class Team extends RatingContainer
public function addPlayer(Player $player, Rating $rating)
{
$this->setRating($player, $rating);
return $this;
}
}
}

8
src/Teams.php
View File

@ -1,11 +1,13 @@
<?php namespace DNW\Skills;
<?php
namespace DNW\Skills;
class Teams
{
public static function concat(/*variable arguments*/)
{
$args = func_get_args();
$result = array();
$result = [];
foreach ($args as $currentTeam) {
$localCurrentTeam = $currentTeam;
@ -14,4 +16,4 @@ class Teams
return $result;
}
}
}

6
src/TeamsRange.php
View File

@ -1,4 +1,6 @@
<?php namespace DNW\Skills;
<?php
namespace DNW\Skills;
use DNW\Skills\Numerics\Range;
@ -13,4 +15,4 @@ class TeamsRange extends Range
{
return new TeamsRange($min, $max);
}
}
}

6
src/TrueSkill/DrawMargin.php
View File

@ -1,4 +1,6 @@
<?php namespace DNW\Skills\TrueSkill;
<?php
namespace DNW\Skills\TrueSkill;
use DNW\Skills\Numerics\GaussianDistribution;
@ -16,4 +18,4 @@ final class DrawMargin
// n1 and n2 are the number of players on each team
return GaussianDistribution::inverseCumulativeTo(.5 * ($drawProbability + 1), 0, 1) * sqrt(1 + 1) * $beta;
}
}
}

16
src/TrueSkill/FactorGraphTrueSkillCalculator.php
View File

@ -1,9 +1,9 @@
<?php namespace DNW\Skills\TrueSkill;
<?php
namespace DNW\Skills\TrueSkill;
use DNW\Skills\GameInfo;
use DNW\Skills\Guard;
use DNW\Skills\ISupportPartialPlay;
use DNW\Skills\ISupportPartialUpdate;
use DNW\Skills\Numerics\BasicMath;
use DNW\Skills\Numerics\DiagonalMatrix;
use DNW\Skills\Numerics\Matrix;
@ -29,7 +29,7 @@ class FactorGraphTrueSkillCalculator extends SkillCalculator
array $teams,
array $teamRanks)
{
Guard::argumentNotNull($gameInfo, "gameInfo");
Guard::argumentNotNull($gameInfo, 'gameInfo');
$this->validateTeamCountAndPlayersCountPerTeam($teams);
RankSorter::sort($teams, $teamRanks);
@ -109,7 +109,7 @@ class FactorGraphTrueSkillCalculator extends SkillCalculator
// Helper function that gets a list of values for all player ratings
private static function getPlayerRatingValues(array $teamAssignmentsList, $playerRatingFunction)
{
$playerRatingValues = array();
$playerRatingValues = [];
foreach ($teamAssignmentsList as $currentTeam) {
foreach ($currentTeam->getAllRatings() as $currentRating) {
@ -138,7 +138,7 @@ class FactorGraphTrueSkillCalculator extends SkillCalculator
// | -0.75 0.75 |
// | 0.00 -1.00 |
$playerAssignments = array();
$playerAssignments = [];
$totalPreviousPlayers = 0;
$teamAssignmentsListCount = count($teamAssignmentsList);
@ -150,7 +150,7 @@ class FactorGraphTrueSkillCalculator extends SkillCalculator
// Need to add in 0's for all the previous players, since they're not
// on this team
$playerAssignments[$currentColumn] = ($totalPreviousPlayers > 0) ? \array_fill(0, $totalPreviousPlayers, 0) : array();
$playerAssignments[$currentColumn] = ($totalPreviousPlayers > 0) ? \array_fill(0, $totalPreviousPlayers, 0) : [];
foreach ($currentTeam->getAllPlayers() as $currentPlayer) {
$playerAssignments[$currentColumn][] = PartialPlay::getPartialPlayPercentage($currentPlayer);
@ -179,4 +179,4 @@ class FactorGraphTrueSkillCalculator extends SkillCalculator
return $playerTeamAssignmentsMatrix;
}
}
}

15
src/TrueSkill/Factors/GaussianFactor.php
View File

@ -1,4 +1,6 @@
<?php namespace DNW\Skills\TrueSkill\Factors;
<?php
namespace DNW\Skills\TrueSkill\Factors;
use DNW\Skills\FactorGraphs\Factor;
use DNW\Skills\FactorGraphs\Message;
@ -14,8 +16,9 @@ abstract class GaussianFactor extends Factor
/**
* Sends the factor-graph message with and returns the log-normalization constant.
* @param Message $message
* @param Variable $variable
*
* @param Message $message
* @param Variable $variable
* @return float|int
*/
protected function sendMessageVariable(Message $message, Variable $variable)
@ -24,6 +27,7 @@ abstract class GaussianFactor extends Factor
$messageValue = $message->getValue();
$logZ = GaussianDistribution::logProductNormalization($marginal, $messageValue);
$variable->setValue(GaussianDistribution::multiply($marginal, $messageValue));
return $logZ;
}
@ -33,7 +37,8 @@ abstract class GaussianFactor extends Factor
$binding = parent::createVariableToMessageBindingWithMessage($variable,
new Message(
$newDistribution,
sprintf("message from %s to %s", $this, $variable)));
sprintf('message from %s to %s', $this, $variable)));
return $binding;
}
}
}

14
src/TrueSkill/Factors/GaussianGreaterThanFactor.php
View File

@ -1,9 +1,11 @@
<?php namespace DNW\Skills\TrueSkill\Factors;
<?php
namespace DNW\Skills\TrueSkill\Factors;
use DNW\Skills\Numerics\GaussianDistribution;
use DNW\Skills\TrueSkill\TruncatedGaussianCorrectionFunctions;
use DNW\Skills\FactorGraphs\Message;
use DNW\Skills\FactorGraphs\Variable;
use DNW\Skills\Numerics\GaussianDistribution;
use DNW\Skills\TrueSkill\TruncatedGaussianCorrectionFunctions;
/**
* Factor representing a team difference that has exceeded the draw margin.
@ -16,7 +18,7 @@ class GaussianGreaterThanFactor extends GaussianFactor
public function __construct($epsilon, Variable $variable)
{
parent::__construct(\sprintf("%s > %.2f", $variable, $epsilon));
parent::__construct(\sprintf('%s > %.2f', $variable, $epsilon));
$this->_epsilon = $epsilon;
$this->createVariableToMessageBinding($variable);
}
@ -31,6 +33,7 @@ class GaussianGreaterThanFactor extends GaussianFactor
$messages = $this->getMessages();
$message = $messages[0]->getValue();
$messageFromVariable = GaussianDistribution::divide($marginal, $message);
return -GaussianDistribution::logProductNormalization($messageFromVariable, $message)
+
log(
@ -39,7 +42,6 @@ class GaussianGreaterThanFactor extends GaussianFactor
$messageFromVariable->getStandardDeviation()
)
);
}
protected function updateMessageVariable(Message $message, Variable $variable)
@ -82,4 +84,4 @@ class GaussianGreaterThanFactor extends GaussianFactor
// Return the difference in the new marginal
return GaussianDistribution::subtract($newMarginal, $oldMarginal);
}
}
}

10
src/TrueSkill/Factors/GaussianLikelihoodFactor.php
View File

@ -1,10 +1,12 @@
<?php namespace DNW\Skills\TrueSkill\Factors;
<?php
namespace DNW\Skills\TrueSkill\Factors;
use Exception;
use DNW\Skills\FactorGraphs\KeyedVariable;
use DNW\Skills\FactorGraphs\Message;
use DNW\Skills\FactorGraphs\Variable;
use DNW\Skills\Numerics\GaussianDistribution;
use Exception;
/**
* Connects two variables and adds uncertainty.
@ -17,7 +19,7 @@ class GaussianLikelihoodFactor extends GaussianFactor
public function __construct($betaSquared, Variable $variable1, Variable $variable2)
{
parent::__construct(sprintf("Likelihood of %s going to %s", $variable2, $variable1));
parent::__construct(sprintf('Likelihood of %s going to %s', $variable2, $variable1));
$this->_precision = 1.0 / $betaSquared;
$this->createVariableToMessageBinding($variable1);
$this->createVariableToMessageBinding($variable2);
@ -80,4 +82,4 @@ class GaussianLikelihoodFactor extends GaussianFactor
throw new Exception();
}
}
}
}

11
src/TrueSkill/Factors/GaussianPriorFactor.php
View File

@ -1,4 +1,6 @@
<?php namespace DNW\Skills\TrueSkill\Factors;
<?php
namespace DNW\Skills\TrueSkill\Factors;
use DNW\Skills\FactorGraphs\Message;
use DNW\Skills\FactorGraphs\Variable;
@ -15,10 +17,10 @@ class GaussianPriorFactor extends GaussianFactor
public function __construct($mean, $variance, Variable $variable)
{
parent::__construct(sprintf("Prior value going to %s", $variable));
parent::__construct(sprintf('Prior value going to %s', $variable));
$this->_newMessage = new GaussianDistribution($mean, sqrt($variance));
$newMessage = new Message(GaussianDistribution::fromPrecisionMean(0, 0),
sprintf("message from %s to %s", $this, $variable));
sprintf('message from %s to %s', $this, $variable));
$this->createVariableToMessageBindingWithMessage($variable, $newMessage);
}
@ -34,6 +36,7 @@ class GaussianPriorFactor extends GaussianFactor
$variable->setValue($newMarginal);
$message->setValue($this->_newMessage);
return GaussianDistribution::subtract($oldMarginal, $newMarginal);
}
}
}

34
src/TrueSkill/Factors/GaussianWeightedSumFactor.php
View File

@ -1,8 +1,10 @@
<?php namespace DNW\Skills\TrueSkill\Factors;
<?php
namespace DNW\Skills\TrueSkill\Factors;
use DNW\Skills\Guard;
use DNW\Skills\FactorGraphs\Message;
use DNW\Skills\FactorGraphs\Variable;
use DNW\Skills\Guard;
use DNW\Skills\Numerics\BasicMath;
use DNW\Skills\Numerics\GaussianDistribution;
@ -13,18 +15,19 @@ use DNW\Skills\Numerics\GaussianDistribution;
*/
class GaussianWeightedSumFactor extends GaussianFactor
{
private $_variableIndexOrdersForWeights = array();
private $_variableIndexOrdersForWeights = [];
// This following is used for convenience, for example, the first entry is [0, 1, 2]
// corresponding to v[0] = a1*v[1] + a2*v[2]
private $_weights;
private $_weightsSquared;
public function __construct(Variable $sumVariable, array $variablesToSum, array $variableWeights = null)
{
parent::__construct(self::createName($sumVariable, $variablesToSum, $variableWeights));
$this->_weights = array();
$this->_weightsSquared = array();
$this->_weights = [];
$this->_weightsSquared = [];
// The first weights are a straightforward copy
// v_0 = a_1*v_1 + a_2*v_2 + ... + a_n * v_n
@ -40,7 +43,7 @@ class GaussianWeightedSumFactor extends GaussianFactor
$variablesToSumLength = count($variablesToSum);
// 0..n-1
$this->_variableIndexOrdersForWeights[0] = array();
$this->_variableIndexOrdersForWeights[0] = [];
for ($i = 0; $i < ($variablesToSumLength + 1); $i++) {
$this->_variableIndexOrdersForWeights[0][] = $i;
}
@ -178,6 +181,7 @@ class GaussianWeightedSumFactor extends GaussianFactor
// Return the difference in the new marginal
$finalDiff = GaussianDistribution::subtract($newMarginal, $marginal0);
return $finalDiff;
}
@ -186,10 +190,10 @@ class GaussianWeightedSumFactor extends GaussianFactor
$allMessages = $this->getMessages();
$allVariables = $this->getVariables();
Guard::argumentIsValidIndex($messageIndex, count($allMessages), "messageIndex");
Guard::argumentIsValidIndex($messageIndex, count($allMessages), 'messageIndex');
$updatedMessages = array();
$updatedVariables = array();
$updatedMessages = [];
$updatedVariables = [];
$indicesToUse = $this->_variableIndexOrdersForWeights[$messageIndex];
@ -211,7 +215,7 @@ class GaussianWeightedSumFactor extends GaussianFactor
private static function createName($sumVariable, $variablesToSum, $weights)
{
// TODO: Perf? Use PHP equivalent of StringBuilder? implode on arrays?
$result = (string)$sumVariable;
$result = (string) $sumVariable;
$result .= ' = ';
$totalVars = count($variablesToSum);
@ -222,15 +226,15 @@ class GaussianWeightedSumFactor extends GaussianFactor
$result .= '-';
}
$absValue = sprintf("%.2f", \abs($weights[$i])); // 0.00?
$absValue = sprintf('%.2f', \abs($weights[$i])); // 0.00?
$result .= $absValue;
$result .= "*[";
$result .= (string)$variablesToSum[$i];
$result .= '*[';
$result .= (string) $variablesToSum[$i];
$result .= ']';
$isLast = ($i == ($totalVars - 1));
if (!$isLast) {
if (! $isLast) {
if ($weights[$i + 1] >= 0) {
$result .= ' + ';
} else {
@ -241,4 +245,4 @@ class GaussianWeightedSumFactor extends GaussianFactor
return $result;
}
}
}

14
src/TrueSkill/Factors/GaussianWithinFactor.php
View File

@ -1,9 +1,11 @@
<?php namespace DNW\Skills\TrueSkill\Factors;
<?php
namespace DNW\Skills\TrueSkill\Factors;
use DNW\Skills\Numerics\GaussianDistribution;
use DNW\Skills\TrueSkill\TruncatedGaussianCorrectionFunctions;
use DNW\Skills\FactorGraphs\Message;
use DNW\Skills\FactorGraphs\Variable;
use DNW\Skills\Numerics\GaussianDistribution;
use DNW\Skills\TrueSkill\TruncatedGaussianCorrectionFunctions;
/**
* Factor representing a team difference that has not exceeded the draw margin.
@ -16,7 +18,7 @@ class GaussianWithinFactor extends GaussianFactor
public function __construct($epsilon, Variable $variable)
{
parent::__construct(sprintf("%s <= %.2f", $variable, $epsilon));
parent::__construct(sprintf('%s <= %.2f', $variable, $epsilon));
$this->_epsilon = $epsilon;
$this->createVariableToMessageBinding($variable);
}
@ -57,7 +59,7 @@ class GaussianWithinFactor extends GaussianFactor
$denominator = 1.0 - TruncatedGaussianCorrectionFunctions::wWithinMargin($dOnSqrtC, $epsilonTimesSqrtC);
$newPrecision = $c / $denominator;
$newPrecisionMean = ( $d +
$newPrecisionMean = ($d +
$sqrtC *
TruncatedGaussianCorrectionFunctions::vWithinMargin($dOnSqrtC, $epsilonTimesSqrtC)
) / $denominator;
@ -75,4 +77,4 @@ class GaussianWithinFactor extends GaussianFactor
// Return the difference in the new marginal
return GaussianDistribution::subtract($newMarginal, $oldMarginal);
}
}
}

73
src/TrueSkill/Layers/IteratedTeamDifferencesInnerLayer.php
View File

@ -1,15 +1,18 @@
<?php namespace DNW\Skills\TrueSkill\Layers;
<?php
namespace DNW\Skills\TrueSkill\Layers;
use Exception;
use DNW\Skills\FactorGraphs\ScheduleLoop;
use DNW\Skills\FactorGraphs\ScheduleSequence;
use DNW\Skills\FactorGraphs\ScheduleStep;
use DNW\Skills\TrueSkill\TrueSkillFactorGraph;
use Exception;
// The whole purpose of this is to do a loop on the bottom
class IteratedTeamDifferencesInnerLayer extends TrueSkillFactorGraphLayer
{
private $_TeamDifferencesComparisonLayer;
private $_TeamPerformancesToTeamPerformanceDifferencesLayer;
public function __construct(TrueSkillFactorGraph $parentGraph,
@ -65,16 +68,16 @@ class IteratedTeamDifferencesInnerLayer extends TrueSkillFactorGraphLayer
$lastDifferencesFactor = $localFactors[$totalTeamDifferences - 1];
$innerSchedule = new ScheduleSequence(
"inner schedule",
array(
'inner schedule',
[
$loop,
new ScheduleStep(
"teamPerformanceToPerformanceDifferenceFactors[0] @ 1",
'teamPerformanceToPerformanceDifferenceFactors[0] @ 1',
$firstDifferencesFactor, 1),
new ScheduleStep(
sprintf("teamPerformanceToPerformanceDifferenceFactors[teamTeamDifferences = %d - 1] @ 2", $totalTeamDifferences),
$lastDifferencesFactor, 2)
)
sprintf('teamPerformanceToPerformanceDifferenceFactors[teamTeamDifferences = %d - 1] @ 2', $totalTeamDifferences),
$lastDifferencesFactor, 2),
]
);
return $innerSchedule;
@ -87,27 +90,27 @@ class IteratedTeamDifferencesInnerLayer extends TrueSkillFactorGraphLayer
$firstPerfToTeamDiff = $teamPerformancesToTeamPerformanceDifferencesLayerLocalFactors[0];
$firstTeamDiffComparison = $teamDifferencesComparisonLayerLocalFactors[0];
$itemsToSequence = array(
$itemsToSequence = [
new ScheduleStep(
"send team perf to perf differences",
'send team perf to perf differences',
$firstPerfToTeamDiff,
0),
new ScheduleStep(
"send to greater than or within factor",
'send to greater than or within factor',
$firstTeamDiffComparison,
0)
);
0),
];
return $this->scheduleSequence(
$itemsToSequence,
"loop of just two teams inner sequence");
'loop of just two teams inner sequence');
}
private function createMultipleTeamInnerPriorLoopSchedule()
{
$totalTeamDifferences = count($this->_TeamPerformancesToTeamPerformanceDifferencesLayer->getLocalFactors());
$forwardScheduleList = array();
$forwardScheduleList = [];
for ($i = 0; $i < $totalTeamDifferences - 1; $i++) {
$teamPerformancesToTeamPerformanceDifferencesLayerLocalFactors = $this->_TeamPerformancesToTeamPerformanceDifferencesLayer->getLocalFactors();
@ -118,24 +121,24 @@ class IteratedTeamDifferencesInnerLayer extends TrueSkillFactorGraphLayer
$currentForwardSchedulePiece =
$this->scheduleSequence(
array(
[
new ScheduleStep(
sprintf("team perf to perf diff %d", $i),
sprintf('team perf to perf diff %d', $i),
$currentTeamPerfToTeamPerfDiff, 0),
new ScheduleStep(
sprintf("greater than or within result factor %d", $i),
sprintf('greater than or within result factor %d', $i),
$currentTeamDiffComparison, 0),
new ScheduleStep(
sprintf("team perf to perf diff factors [%d], 2", $i),
$currentTeamPerfToTeamPerfDiff, 2)
), sprintf("current forward schedule piece %d", $i));
sprintf('team perf to perf diff factors [%d], 2', $i),
$currentTeamPerfToTeamPerfDiff, 2),
], sprintf('current forward schedule piece %d', $i));
$forwardScheduleList[] = $currentForwardSchedulePiece;
}
$forwardSchedule = new ScheduleSequence("forward schedule", $forwardScheduleList);
$forwardSchedule = new ScheduleSequence('forward schedule', $forwardScheduleList);
$backwardScheduleList = array();
$backwardScheduleList = [];
for ($i = 0; $i < $totalTeamDifferences - 1; $i++) {
$teamPerformancesToTeamPerformanceDifferencesLayerLocalFactors = $this->_TeamPerformancesToTeamPerformanceDifferencesLayer->getLocalFactors();
@ -146,35 +149,35 @@ class IteratedTeamDifferencesInnerLayer extends TrueSkillFactorGraphLayer
$performancesToDifferencesFactor = $teamPerformancesToTeamPerformanceDifferencesLayerLocalFactors[$totalTeamDifferences - 1 - $i];
$currentBackwardSchedulePiece = new ScheduleSequence(
"current backward schedule piece",
array(
'current backward schedule piece',
[
new ScheduleStep(
sprintf("teamPerformanceToPerformanceDifferenceFactors[totalTeamDifferences - 1 - %d] @ 0", $i),
sprintf('teamPerformanceToPerformanceDifferenceFactors[totalTeamDifferences - 1 - %d] @ 0', $i),
$differencesFactor, 0),
new ScheduleStep(
sprintf("greaterThanOrWithinResultFactors[totalTeamDifferences - 1 - %d] @ 0", $i),
sprintf('greaterThanOrWithinResultFactors[totalTeamDifferences - 1 - %d] @ 0', $i),
$comparisonFactor, 0),
new ScheduleStep(
sprintf("teamPerformanceToPerformanceDifferenceFactors[totalTeamDifferences - 1 - %d] @ 1", $i),
$performancesToDifferencesFactor, 1)
));
sprintf('teamPerformanceToPerformanceDifferenceFactors[totalTeamDifferences - 1 - %d] @ 1', $i),
$performancesToDifferencesFactor, 1),
]);
$backwardScheduleList[] = $currentBackwardSchedulePiece;
}
$backwardSchedule = new ScheduleSequence("backward schedule", $backwardScheduleList);
$backwardSchedule = new ScheduleSequence('backward schedule', $backwardScheduleList);
$forwardBackwardScheduleToLoop =
new ScheduleSequence(
"forward Backward Schedule To Loop",
array($forwardSchedule, $backwardSchedule));
'forward Backward Schedule To Loop',
[$forwardSchedule, $backwardSchedule]);
$initialMaxDelta = 0.0001;
$loop = new ScheduleLoop(
sprintf("loop with max delta of %f", $initialMaxDelta),
sprintf('loop with max delta of %f', $initialMaxDelta),
$forwardBackwardScheduleToLoop,
$initialMaxDelta);
return $loop;
}
}
}

31
src/TrueSkill/Layers/PlayerPerformancesToTeamPerformancesLayer.php
View File

@ -1,9 +1,9 @@
<?php namespace DNW\Skills\TrueSkill\Layers;
<?php
namespace DNW\Skills\TrueSkill\Layers;
use DNW\Skills\PartialPlay;
use DNW\Skills\FactorGraphs\ScheduleLoop;
use DNW\Skills\FactorGraphs\ScheduleSequence;
use DNW\Skills\FactorGraphs\ScheduleStep;
use DNW\Skills\PartialPlay;
use DNW\Skills\TrueSkill\Factors\GaussianWeightedSumFactor;
use DNW\Skills\TrueSkill\TrueSkillFactorGraph;
@ -26,7 +26,7 @@ class PlayerPerformancesToTeamPerformancesLayer extends TrueSkillFactorGraphLaye
// REVIEW: Does it make sense to have groups of one?
$outputVariablesGroups = &$this->getOutputVariablesGroups();
$outputVariablesGroups[] = array($teamPerformance);
$outputVariablesGroups[] = [$teamPerformance];
}
}
@ -37,10 +37,11 @@ class PlayerPerformancesToTeamPerformancesLayer extends TrueSkillFactorGraphLaye
$sequence = $this->scheduleSequence(
array_map(
function ($weightedSumFactor) {
return new ScheduleStep("Perf to Team Perf Step", $weightedSumFactor, 0);
return new ScheduleStep('Perf to Team Perf Step', $weightedSumFactor, 0);
},
$localFactors),
"all player perf to team perf schedule");
'all player perf to team perf schedule');
return $sequence;
}
@ -49,6 +50,7 @@ class PlayerPerformancesToTeamPerformancesLayer extends TrueSkillFactorGraphLaye
$weights = array_map(
function ($v) {
$player = $v->getKey();
return PartialPlay::getPartialPlayPercentage($player);
},
$teamMembers);
@ -57,32 +59,33 @@ class PlayerPerformancesToTeamPerformancesLayer extends TrueSkillFactorGraphLaye
$sumVariable,
$teamMembers,
$weights);
}
public function createPosteriorSchedule()
{
$allFactors = array();
$allFactors = [];
$localFactors = $this->getLocalFactors();
foreach ($localFactors as $currentFactor) {
$localCurrentFactor = $currentFactor;
$numberOfMessages = $localCurrentFactor->getNumberOfMessages();
for ($currentIteration = 1; $currentIteration < $numberOfMessages; $currentIteration++) {
$allFactors[] = new ScheduleStep("team sum perf @" . $currentIteration,
$allFactors[] = new ScheduleStep('team sum perf @'.$currentIteration,
$localCurrentFactor, $currentIteration);
}
}
return $this->scheduleSequence($allFactors, "all of the team's sum iterations");
}
private function createOutputVariable($team)
{
$memberNames = array_map(function ($currentPlayer) {
return (string)($currentPlayer->getKey());
return (string) ($currentPlayer->getKey());
}, $team);
$teamMemberNames = \join(", ", $memberNames);
$outputVariable = $this->getParentFactorGraph()->getVariableFactory()->createBasicVariable("Team[" . $teamMemberNames . "]'s performance");
$teamMemberNames = \implode(', ', $memberNames);
$outputVariable = $this->getParentFactorGraph()->getVariableFactory()->createBasicVariable('Team['.$teamMemberNames."]'s performance");
return $outputVariable;
}
}
}

22
src/TrueSkill/Layers/PlayerPriorValuesToSkillsLayer.php
View File

@ -1,11 +1,13 @@
<?php namespace DNW\Skills\TrueSkill\Layers;
<?php
namespace DNW\Skills\TrueSkill\Layers;
use DNW\Skills\Numerics\BasicMath;
use DNW\Skills\Rating;
use DNW\Skills\FactorGraphs\ScheduleStep;
use DNW\Skills\FactorGraphs\Variable;
use DNW\Skills\TrueSkill\TrueSkillFactorGraph;
use DNW\Skills\Numerics\BasicMath;
use DNW\Skills\Rating;
use DNW\Skills\TrueSkill\Factors\GaussianPriorFactor;
use DNW\Skills\TrueSkill\TrueSkillFactorGraph;
// We intentionally have no Posterior schedule since the only purpose here is to
// start the process.
@ -24,7 +26,7 @@ class PlayerPriorValuesToSkillsLayer extends TrueSkillFactorGraphLayer
$teams = $this->_teams;
foreach ($teams as $currentTeam) {
$localCurrentTeam = $currentTeam;
$currentTeamSkills = array();
$currentTeamSkills = [];
$currentTeamAllPlayers = $localCurrentTeam->getAllPlayers();
foreach ($currentTeamAllPlayers as $currentTeamPlayer) {
@ -44,13 +46,14 @@ class PlayerPriorValuesToSkillsLayer extends TrueSkillFactorGraphLayer
public function createPriorSchedule()
{
$localFactors = $this->getLocalFactors();
return $this->scheduleSequence(
array_map(
function ($prior) {
return new ScheduleStep("Prior to Skill Step", $prior, 0);
return new ScheduleStep('Prior to Skill Step', $prior, 0);
},
$localFactors),
"All priors");
'All priors');
}
private function createPriorFactor($player, Rating $priorRating, Variable $skillsVariable)
@ -67,7 +70,8 @@ class PlayerPriorValuesToSkillsLayer extends TrueSkillFactorGraphLayer
{
$parentFactorGraph = $this->getParentFactorGraph();
$variableFactory = $parentFactorGraph->getVariableFactory();
$skillOutputVariable = $variableFactory->createKeyedVariable($key, $key . "'s skill");
$skillOutputVariable = $variableFactory->createKeyedVariable($key, $key."'s skill");
return $skillOutputVariable;
}
}
}

23
src/TrueSkill/Layers/PlayerSkillsToPerformancesLayer.php
View File

@ -1,10 +1,12 @@
<?php namespace DNW\Skills\TrueSkill\Layers;
<?php
namespace DNW\Skills\TrueSkill\Layers;
use DNW\Skills\FactorGraphs\ScheduleStep;
use DNW\Skills\FactorGraphs\KeyedVariable;
use DNW\Skills\FactorGraphs\ScheduleStep;
use DNW\Skills\Numerics\BasicMath;
use DNW\Skills\TrueSkill\TrueSkillFactorGraph;
use DNW\Skills\TrueSkill\Factors\GaussianLikelihoodFactor;
use DNW\Skills\TrueSkill\TrueSkillFactorGraph;
class PlayerSkillsToPerformancesLayer extends TrueSkillFactorGraphLayer
{
@ -19,7 +21,7 @@ class PlayerSkillsToPerformancesLayer extends TrueSkillFactorGraphLayer
$outputVariablesGroups = &$this->getOutputVariablesGroups();
foreach ($inputVariablesGroups as $currentTeam) {
$currentTeamPlayerPerformances = array();
$currentTeamPlayerPerformances = [];
foreach ($currentTeam as $playerSkillVariable) {
$localPlayerSkillVariable = $playerSkillVariable;
@ -45,31 +47,34 @@ class PlayerSkillsToPerformancesLayer extends TrueSkillFactorGraphLayer
private function createOutputVariable($key)
{
$outputVariable = $this->getParentFactorGraph()->getVariableFactory()->createKeyedVariable($key, $key . "'s performance");
$outputVariable = $this->getParentFactorGraph()->getVariableFactory()->createKeyedVariable($key, $key."'s performance");
return $outputVariable;
}
public function createPriorSchedule()
{
$localFactors = $this->getLocalFactors();
return $this->scheduleSequence(
array_map(
function ($likelihood) {
return new ScheduleStep("Skill to Perf step", $likelihood, 0);
return new ScheduleStep('Skill to Perf step', $likelihood, 0);
},
$localFactors),
"All skill to performance sending");
'All skill to performance sending');
}
public function createPosteriorSchedule()
{
$localFactors = $this->getLocalFactors();
return $this->scheduleSequence(
array_map(
function ($likelihood) {
return new ScheduleStep("name", $likelihood, 1);
return new ScheduleStep('name', $likelihood, 1);
},
$localFactors),
"All skill to performance sending");
'All skill to performance sending');
}
}

9
src/TrueSkill/Layers/TeamDifferencesComparisonLayer.php
View File

@ -1,13 +1,16 @@
<?php namespace DNW\Skills\TrueSkill\Layers;
<?php
namespace DNW\Skills\TrueSkill\Layers;
use DNW\Skills\TrueSkill\DrawMargin;
use DNW\Skills\TrueSkill\TrueSkillFactorGraph;
use DNW\Skills\TrueSkill\Factors\GaussianGreaterThanFactor;
use DNW\Skills\TrueSkill\Factors\GaussianWithinFactor;
use DNW\Skills\TrueSkill\TrueSkillFactorGraph;
class TeamDifferencesComparisonLayer extends TrueSkillFactorGraphLayer
{
private $_epsilon;
private $_teamRanks;
public function __construct(TrueSkillFactorGraph $parentGraph, array $teamRanks)
@ -35,4 +38,4 @@ class TeamDifferencesComparisonLayer extends TrueSkillFactorGraphLayer
$this->addLayerFactor($factor);
}
}
}
}

21
src/TrueSkill/Layers/TeamPerformancesToTeamPerformanceDifferencesLayer.php
View File

@ -1,8 +1,10 @@
<?php namespace DNW\Skills\TrueSkill\Layers;
<?php
namespace DNW\Skills\TrueSkill\Layers;
use DNW\Skills\FactorGraphs\Variable;
use DNW\Skills\TrueSkill\TrueSkillFactorGraph;
use DNW\Skills\TrueSkill\Factors\GaussianWeightedSumFactor;
use DNW\Skills\TrueSkill\TrueSkillFactorGraph;
class TeamPerformancesToTeamPerformanceDifferencesLayer extends TrueSkillFactorGraphLayer
{
@ -17,8 +19,7 @@ class TeamPerformancesToTeamPerformanceDifferencesLayer extends TrueSkillFactorG
$inputVariablesGroupsCount = count($inputVariablesGroups);
$outputVariablesGroup = &$this->getOutputVariablesGroups();
for ($i = 0; $i < $inputVariablesGroupsCount - 1; $i++)
{
for ($i = 0; $i < $inputVariablesGroupsCount - 1; $i++) {
$strongerTeam = $inputVariablesGroups[$i][0];
$weakerTeam = $inputVariablesGroups[$i + 1][0];
@ -27,7 +28,7 @@ class TeamPerformancesToTeamPerformanceDifferencesLayer extends TrueSkillFactorG
$this->addLayerFactor($newDifferencesFactor);
// REVIEW: Does it make sense to have groups of one?
$outputVariablesGroup[] = array($currentDifference);
$outputVariablesGroup[] = [$currentDifference];
}
}
@ -35,14 +36,16 @@ class TeamPerformancesToTeamPerformanceDifferencesLayer extends TrueSkillFactorG
Variable $weakerTeam,
Variable $output)
{
$teams = array($strongerTeam, $weakerTeam);
$weights = array(1.0, -1.0);
$teams = [$strongerTeam, $weakerTeam];
$weights = [1.0, -1.0];
return new GaussianWeightedSumFactor($output, $teams, $weights);
}
private function createOutputVariable()
{
$outputVariable = $this->getParentFactorGraph()->getVariableFactory()->createBasicVariable("Team performance difference");
$outputVariable = $this->getParentFactorGraph()->getVariableFactory()->createBasicVariable('Team performance difference');
return $outputVariable;
}
}
}

6
src/TrueSkill/Layers/TrueSkillFactorGraphLayer.php
View File

@ -1,4 +1,6 @@
<?php namespace DNW\Skills\TrueSkill\Layers;
<?php
namespace DNW\Skills\TrueSkill\Layers;
use DNW\Skills\FactorGraphs\FactorGraphLayer;
use DNW\Skills\TrueSkill\TrueSkillFactorGraph;
@ -9,4 +11,4 @@ abstract class TrueSkillFactorGraphLayer extends FactorGraphLayer
{
parent::__construct($parentGraph);
}
}
}

27
src/TrueSkill/TrueSkillFactorGraph.php
View File

@ -1,13 +1,15 @@
<?php namespace DNW\Skills\TrueSkill;
<?php
namespace DNW\Skills\TrueSkill;
use DNW\Skills\GameInfo;
use DNW\Skills\Numerics\GaussianDistribution;
use DNW\Skills\Rating;
use DNW\Skills\RatingContainer;
use DNW\Skills\FactorGraphs\FactorGraph;
use DNW\Skills\FactorGraphs\FactorList;
use DNW\Skills\FactorGraphs\ScheduleSequence;
use DNW\Skills\FactorGraphs\VariableFactory;
use DNW\Skills\GameInfo;
use DNW\Skills\Numerics\GaussianDistribution;
use DNW\Skills\Rating;
use DNW\Skills\RatingContainer;
use DNW\Skills\TrueSkill\Layers\IteratedTeamDifferencesInnerLayer;
use DNW\Skills\TrueSkill\Layers\PlayerPerformancesToTeamPerformancesLayer;
use DNW\Skills\TrueSkill\Layers\PlayerPriorValuesToSkillsLayer;
@ -18,7 +20,9 @@ use DNW\Skills\TrueSkill\Layers\TeamPerformancesToTeamPerformanceDifferencesLaye
class TrueSkillFactorGraph extends FactorGraph
{
private $_gameInfo;
private $_layers;
private $_priorLayer;
public function __construct(GameInfo $gameInfo, array $teams, array $teamRanks)
@ -31,15 +35,15 @@ class TrueSkillFactorGraph extends FactorGraph
});
$this->setVariableFactory($newFactory);
$this->_layers = array(
$this->_layers = [
$this->_priorLayer,
new PlayerSkillsToPerformancesLayer($this),
new PlayerPerformancesToTeamPerformancesLayer($this),
new IteratedTeamDifferencesInnerLayer(
$this,
new TeamPerformancesToTeamPerformanceDifferencesLayer($this),
new TeamDifferencesComparisonLayer($this, $teamRanks))
);
new TeamDifferencesComparisonLayer($this, $teamRanks)),
];
}
public function getGameInfo()
@ -83,12 +87,13 @@ class TrueSkillFactorGraph extends FactorGraph
}
$logZ = $factorList->getLogNormalization();
return exp($logZ);
}
private function createFullSchedule()
{
$fullSchedule = array();
$fullSchedule = [];
$layers = $this->_layers;
foreach ($layers as $currentLayer) {
@ -107,7 +112,7 @@ class TrueSkillFactorGraph extends FactorGraph
}
}
return new ScheduleSequence("Full schedule", $fullSchedule);
return new ScheduleSequence('Full schedule', $fullSchedule);
}
public function getUpdatedRatings()
@ -127,4 +132,4 @@ class TrueSkillFactorGraph extends FactorGraph
return $result;
}
}
}

10
src/TrueSkill/TruncatedGaussianCorrectionFunctions.php
View File

@ -1,4 +1,6 @@
<?php namespace DNW\Skills\TrueSkill;
<?php
namespace DNW\Skills\TrueSkill;
use DNW\Skills\Numerics\GaussianDistribution;
@ -13,7 +15,7 @@ class TruncatedGaussianCorrectionFunctions
* correction of a single-sided truncated Gaussian with unit variance."
*
* @param $teamPerformanceDifference
* @param number $drawMargin In the paper, it's referred to as just "ε".
* @param number $drawMargin In the paper, it's referred to as just "ε".
* @param $c
* @return float
*/
@ -57,10 +59,12 @@ class TruncatedGaussianCorrectionFunctions
if ($teamPerformanceDifference < 0.0) {
return 1.0;
}
return 0.0;
}
$vWin = self::vExceedsMargin($teamPerformanceDifference, $drawMargin);
return $vWin * ($vWin + $teamPerformanceDifference - $drawMargin);
}
@ -126,4 +130,4 @@ class TruncatedGaussianCorrectionFunctions
*
GaussianDistribution::at(-$drawMargin - $teamPerformanceDifferenceAbsoluteValue)) / $denominator;
}
}
}

42
src/TrueSkill/TwoPlayerTrueSkillCalculator.php
View File

@ -1,15 +1,17 @@
<?php namespace DNW\Skills\TrueSkill;
<?php
namespace DNW\Skills\TrueSkill;
use DNW\Skills\GameInfo;
use DNW\Skills\Guard;
use DNW\Skills\Numerics\BasicMath;
use DNW\Skills\PairwiseComparison;
use DNW\Skills\PlayersRange;
use DNW\Skills\RankSorter;
use DNW\Skills\Rating;
use DNW\Skills\RatingContainer;
use DNW\Skills\SkillCalculator;
use DNW\Skills\SkillCalculatorSupportedOptions;
use DNW\Skills\PlayersRange;
use DNW\Skills\TeamsRange;
/**
@ -30,7 +32,7 @@ class TwoPlayerTrueSkillCalculator extends SkillCalculator
array $teamRanks)
{
// Basic argument checking
Guard::argumentNotNull($gameInfo, "gameInfo");
Guard::argumentNotNull($gameInfo, 'gameInfo');
$this->validateTeamCountAndPlayersCountPerTeam($teams);
// Make sure things are in order
@ -83,8 +85,7 @@ class TwoPlayerTrueSkillCalculator extends SkillCalculator
$winningMean = $selfRating->getMean();
$losingMean = $opponentRating->getMean();
switch ($comparison)
{
switch ($comparison) {
case PairwiseComparison::WIN:
case PairwiseComparison::DRAW:
// NOP
@ -97,37 +98,34 @@ class TwoPlayerTrueSkillCalculator extends SkillCalculator
$meanDelta = $winningMean - $losingMean;
if ($comparison != PairwiseComparison::DRAW)
{
if ($comparison != PairwiseComparison::DRAW) {
// non-draw case
$v = TruncatedGaussianCorrectionFunctions::vExceedsMarginScaled($meanDelta, $drawMargin, $c);
$w = TruncatedGaussianCorrectionFunctions::wExceedsMarginScaled($meanDelta, $drawMargin, $c);
$rankMultiplier = (int) $comparison;
}
else
{
} else {
$v = TruncatedGaussianCorrectionFunctions::vWithinMarginScaled($meanDelta, $drawMargin, $c);
$w = TruncatedGaussianCorrectionFunctions::wWithinMarginScaled($meanDelta, $drawMargin, $c);
$rankMultiplier = 1;
}
$meanMultiplier = (BasicMath::square($selfRating->getStandardDeviation()) + BasicMath::square($gameInfo->getDynamicsFactor()))/$c;
$meanMultiplier = (BasicMath::square($selfRating->getStandardDeviation()) + BasicMath::square($gameInfo->getDynamicsFactor())) / $c;
$varianceWithDynamics = BasicMath::square($selfRating->getStandardDeviation()) + BasicMath::square($gameInfo->getDynamicsFactor());
$stdDevMultiplier = $varianceWithDynamics/BasicMath::square($c);
$stdDevMultiplier = $varianceWithDynamics / BasicMath::square($c);
$newMean = $selfRating->getMean() + ($rankMultiplier*$meanMultiplier*$v);
$newStdDev = sqrt($varianceWithDynamics*(1 - $w*$stdDevMultiplier));
$newMean = $selfRating->getMean() + ($rankMultiplier * $meanMultiplier * $v);
$newStdDev = sqrt($varianceWithDynamics * (1 - $w * $stdDevMultiplier));
return new Rating($newMean, $newStdDev);
}
/**
* {@inheritdoc }
* {@inheritdoc}
*/
public function calculateMatchQuality(GameInfo $gameInfo, array $teams)
{
Guard::argumentNotNull($gameInfo, "gameInfo");
Guard::argumentNotNull($gameInfo, 'gameInfo');
$this->validateTeamCountAndPlayersCountPerTeam($teams);
$team1 = $teams[0];
@ -146,18 +144,18 @@ class TwoPlayerTrueSkillCalculator extends SkillCalculator
// This is the square root part of the equation:
$sqrtPart = sqrt(
(2*$betaSquared)
(2 * $betaSquared)
/
(2*$betaSquared + $player1SigmaSquared + $player2SigmaSquared)
(2 * $betaSquared + $player1SigmaSquared + $player2SigmaSquared)
);
// This is the exponent part of the equation:
$expPart = exp(
(-1*BasicMath::square($player1Rating->getMean() - $player2Rating->getMean()))
(-1 * BasicMath::square($player1Rating->getMean() - $player2Rating->getMean()))
/
(2*(2*$betaSquared + $player1SigmaSquared + $player2SigmaSquared))
(2 * (2 * $betaSquared + $player1SigmaSquared + $player2SigmaSquared))
);
return $sqrtPart*$expPart;
return $sqrtPart * $expPart;
}
}
}

18
src/TrueSkill/TwoTeamTrueSkillCalculator.php
View File

@ -1,19 +1,19 @@
<?php namespace DNW\Skills\TrueSkill;
<?php
namespace DNW\Skills\TrueSkill;
use DNW\Skills\GameInfo;
use DNW\Skills\Guard;
use DNW\Skills\Numerics\BasicMath;
use DNW\Skills\PairwiseComparison;
use DNW\Skills\PlayersRange;
use DNW\Skills\RankSorter;
use DNW\Skills\Rating;
use DNW\Skills\RatingContainer;
use DNW\Skills\SkillCalculator;
use DNW\Skills\SkillCalculatorSupportedOptions;
use DNW\Skills\PlayersRange;
use DNW\Skills\TeamsRange;
use DNW\Skills\Team;
use DNW\Skills\TeamsRange;
/**
* Calculates new ratings for only two teams where each team has 1 or more players.
@ -29,7 +29,7 @@ class TwoTeamTrueSkillCalculator extends SkillCalculator
public function calculateNewRatings(GameInfo $gameInfo, array $teams, array $teamRanks)
{
Guard::argumentNotNull($gameInfo, "gameInfo");
Guard::argumentNotNull($gameInfo, 'gameInfo');
$this->validateTeamCountAndPlayersCountPerTeam($teams);
RankSorter::sort($teams, $teamRanks);
@ -111,7 +111,7 @@ class TwoTeamTrueSkillCalculator extends SkillCalculator
// non-draw case
$v = TruncatedGaussianCorrectionFunctions::vExceedsMarginScaled($meanDelta, $drawMargin, $c);
$w = TruncatedGaussianCorrectionFunctions::wExceedsMarginScaled($meanDelta, $drawMargin, $c);
$rankMultiplier = (int)$selfToOtherTeamComparison;
$rankMultiplier = (int) $selfToOtherTeamComparison;
} else {
// assume draw
$v = TruncatedGaussianCorrectionFunctions::vWithinMarginScaled($meanDelta, $drawMargin, $c);
@ -143,7 +143,7 @@ class TwoTeamTrueSkillCalculator extends SkillCalculator
*/
public function calculateMatchQuality(GameInfo $gameInfo, array $teams)
{
Guard::argumentNotNull($gameInfo, "gameInfo");
Guard::argumentNotNull($gameInfo, 'gameInfo');
$this->validateTeamCountAndPlayersCountPerTeam($teams);
// We've verified that there's just two teams
@ -189,4 +189,4 @@ class TwoTeamTrueSkillCalculator extends SkillCalculator
return $expPart * $sqrtPart;
}
}
}