Start of factor graph port. Things don't work yet, but a lot of syntax updates towards PHP

2025-11-04 10:12:28 +01:00 · 2010-09-18 11:11:44 -04:00
parent 4a76cc34cc
commit e434696b44
25 changed files with 1637 additions and 20 deletions
--- a/PHPSkills/TrueSkill/Layers/IteratedTeamDifferencesInnerLayer.php
+++ b/PHPSkills/TrueSkill/Layers/IteratedTeamDifferencesInnerLayer.php
@@ -0,0 +1,147 @@
+<?php
+
+namespace Moserware\Skills\TrueSkill\Layers;
+
+// 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,
+                                TeamPerformancesToTeamPerformanceDifferencesLayer $teamPerformancesToPerformanceDifferences,
+                                TeamDifferencesComparisonLayer $teamDifferencesComparisonLayer)
+    {
+        parent::__construct($parentGraph);
+        $this->_TeamPerformancesToTeamPerformanceDifferencesLayer = $teamPerformancesToPerformanceDifferences;
+        $this->_TeamDifferencesComparisonLayer = $teamDifferencesComparisonLayer;
+    }
+
+    public function buildLayer()
+    {
+        $this->_TeamPerformancesToTeamPerformanceDifferencesLayer->setRawInputVariablesGroups($this->getInputVariablesGroups());
+        $this->_TeamPerformancesToTeamPerformanceDifferencesLayer->buildLayer();
+
+        $this->_TeamDifferencesComparisonLayer->setRawInputVariablesGroups(
+            $this->_TeamPerformancesToTeamPerformanceDifferencesLayer->getRawOutputVariablesGroups());
+        $this->_TeamDifferencesComparisonLayer->buildLayer();
+    }
+
+    public function createPriorSchedule()
+    {
+        // BLOG about $loop
+        switch (count($this->getInputVariablesGroups()))
+        {
+            case 0:
+            case 1:
+                throw new InvalidOperationException();
+            case 2:
+                $loop = $this->createTwoTeamInnerPriorLoopSchedule();
+                break;
+            default:
+                $loop = $this->createMultipleTeamInnerPriorLoopSchedule();
+                break;
+        }
+
+        // When dealing with differences, there are always (n-1) differences, so add in the 1
+        $totalTeamDifferences = count($this->_TeamPerformancesToTeamPerformanceDifferencesLayer->getLocalFactors());
+        $totalTeams = $totalTeamDifferences + 1;
+
+        $innerSchedule = new ScheduleSequence(
+            "inner schedule",
+            array(
+                    $loop,
+                    new ScheduleStep(
+                        "teamPerformanceToPerformanceDifferenceFactors[0] @ 1",
+                        ($this->_TeamPerformancesToTeamPerformanceDifferencesLayer->getLocalFactors())[0], 1),
+                    new ScheduleStep(
+                        "teamPerformanceToPerformanceDifferenceFactors[teamTeamDifferences = {0} - 1] @ 2",                                      
+                        ($this->_TeamPerformancesToTeamPerformanceDifferencesLayer->getLocalFactors())[$totalTeamDifferences - 1], 2)
+                )
+            );
+
+        return innerSchedule;
+    }
+
+    private function createTwoTeamInnerPriorLoopSchedule()
+    {
+        return $this->scheduleSequence(
+            array(
+                    new ScheduleStep(
+                        "send team perf to perf differences",
+                        ($this->_TeamPerformancesToTeamPerformanceDifferencesLayer->getLocalFactors())[0],
+                        0),
+                    new ScheduleStep(
+                        "send to greater than or within factor",
+                        ($this->_TeamDifferencesComparisonLayer->getLocalFactors())[0],
+                        0)
+                ),
+            "loop of just two teams inner sequence");
+    }
+
+    private function createMultipleTeamInnerPriorLoopSchedule()
+    {
+        $totalTeamDifferences = count($this->_TeamPerformancesToTeamPerformanceDifferencesLayer->getLocalFactors());
+
+        $forwardScheduleList = array();
+
+        for ($i = 0; $i < $totalTeamDifferences - 1; $i++)
+        {
+            $currentForwardSchedulePiece =
+                $this->scheduleSequence(
+                    array(
+                            new ScheduleStep(
+                                sprintf("team perf to perf diff %d", $i),
+                                ($this->_TeamPerformancesToTeamPerformanceDifferencesLayer->getLocalFactors())[$i], 0),
+                            new ScheduleStep(
+                                sprintf("greater than or within result factor %d", $i),
+                                ($this->_TeamDifferencesComparisonLayer->getLocalFactors())[$i], 0),
+                            new ScheduleStep(
+                                sprintf("team perf to perf diff factors [%d], 2", $i),
+                                ($this->_TeamPerformancesToTeamPerformanceDifferencesLayer->getLocalFactors())[$i], 2)
+                        ), sprintf("current forward schedule piece %d", $i);
+
+            $forwardScheduleList[] = $currentForwardSchedulePiece;
+        }
+
+        $forwardSchedule = new ScheduleSequence("forward schedule", $forwardScheduleList);
+
+        $backwardScheduleList = array();
+
+        for ($i = 0; $i < $totalTeamDifferences - 1; $i++)
+        {
+            $currentBackwardSchedulePiece = new ScheduleSequence(
+                "current backward schedule piece",
+                array(
+                        new ScheduleStep(
+                            sprintf("teamPerformanceToPerformanceDifferenceFactors[totalTeamDifferences - 1 - %d] @ 0", $i),
+                            ($this->_TeamPerformancesToTeamPerformanceDifferencesLayer->getLocalFactors())[$totalTeamDifferences - 1 - $i], 0),
+                        new ScheduleStep(
+                            sprintf("greaterThanOrWithinResultFactors[totalTeamDifferences - 1 - %d] @ 0", $i),
+                            ($this->_TeamDifferencesComparisonLayer->getLocalFactors())[$totalTeamDifferences - 1 - $i], 0),
+                        new ScheduleStep(
+                            sprintf("teamPerformanceToPerformanceDifferenceFactors[totalTeamDifferences - 1 - %d] @ 1", $i),
+                            ($this->_TeamPerformancesToTeamPerformanceDifferencesLayer->getLocalFactors())[$totalTeamDifferences - 1 - $i], 1)
+                );
+            $backwardScheduleList[] = $currentBackwardSchedulePiece;
+        }
+
+        $backwardSchedule = new ScheduleSequence("backward schedule", $backwardScheduleList);
+
+        $forwardBackwardScheduleToLoop =
+            new ScheduleSequence(
+                "forward Backward Schedule To Loop",
+                array($forwardSchedule, $backwardSchedule));
+
+        $initialMaxDelta = 0.0001;
+
+        $loop = new ScheduleLoop(
+            sprintf("loop with max delta of %f", $initialMaxDelta),
+            $forwardBackwardScheduleToLoop,
+            $initialMaxDelta);
+
+        return $loop;
+    }
+}
+
+?>