More debugging name cleanups along with a few reference tweaks. Next up: fixing the schedule and running it

PHPSkills/FactorGraphs/Factor.php

@@ -85,7 +85,7 @@ abstract class Factor
         $index = count($this->_messages);
         $this->_messages[] = $message;        
         $this->_messageToVariableBinding->setValue($message, $variable);
-        $this->_variables[] = &$variable;
+        $this->_variables[] = $variable;
         return $message;
     }
 

PHPSkills/FactorGraphs/FactorGraphLayer.php

@@ -43,9 +43,9 @@ abstract class FactorGraphLayer
         $this->_inputVariablesGroups = $value;
     }
 
-    protected function scheduleSequence(&$itemsToSequence)
+    protected function scheduleSequence(&$itemsToSequence, $name)
     {
-        return new ScheduleSequence("TODO", $itemsToSequence);
+        return new ScheduleSequence($name, $itemsToSequence);
     }
 
     protected function addLayerFactor(&$factor)

PHPSkills/Numerics/GaussianDistribution.php

@@ -261,7 +261,7 @@ class GaussianDistribution
     
     public function __toString()
     {
-        return 'mean=' . $this->_mean . ' standardDeviation=' . $this->_standardDeviation;
+        return sprintf("mean=%.4f standardDeviation=%.4f", $this->_mean, $this->_standardDeviation);
     }  
 }
 ?>

PHPSkills/Rating.php

@@ -72,7 +72,7 @@ class Rating
 
     public function __toString()
     {
-        return 'mean=' . $this->_mean . ' standardDeviation=' . $this->_standardDeviation;
+        return sprintf("mean=%.4f, standardDeviation=%.4f", $this->_mean, $this->_standardDeviation);
     }  
 }
 

PHPSkills/TrueSkill/Layers/IteratedTeamDifferencesInnerLayer.php

@@ -67,7 +67,7 @@ class IteratedTeamDifferencesInnerLayer extends TrueSkillFactorGraphLayer
                         "teamPerformanceToPerformanceDifferenceFactors[0] @ 1",
                         $localFactors[0], 1),
                     new ScheduleStep(
-                        "teamPerformanceToPerformanceDifferenceFactors[teamTeamDifferences = {0} - 1] @ 2",                                      
+                        sprintf("teamPerformanceToPerformanceDifferenceFactors[teamTeamDifferences = %d - 1] @ 2", $totalTeamDifferences),
                         $localFactors[$totalTeamDifferences - 1], 2)
                 )
             );

PHPSkills/TrueSkill/Layers/PlayerPerformancesToTeamPerformancesLayer.php

@@ -74,7 +74,7 @@ class PlayerPerformancesToTeamPerformancesLayer extends TrueSkillFactorGraphLaye
             $numberOfMessages = $currentFactor->getNumberOfMessages();
             for($currentIteration = 1; $currentIteration < $numberOfMessages; $currentIteration++)
             {
-                $allFactors[] = new ScheduleStep("team sum perf @" + $currentIteration,
+                $allFactors[] = new ScheduleStep("team sum perf @" . $currentIteration,
                                                  $currentFactor, $currentIteration);
             }
         }

PHPSkills/TrueSkill/Layers/PlayerSkillsToPerformancesLayer.php

@@ -29,11 +29,11 @@ class PlayerSkillsToPerformancesLayer extends TrueSkillFactorGraphLayer
                 $playerPerformance = $this->createOutputVariable($playerSkillVariable->getKey());
                 $newLikelihoodFactor = $this->createLikelihood($playerSkillVariable, $playerPerformance);
                 $this->addLayerFactor($newLikelihoodFactor);
-                $currentTeamPlayerPerformances[] = &$playerPerformance;
+                $currentTeamPlayerPerformances[] = $playerPerformance;
             }
             
             $outputVariablesGroups = &$this->getOutputVariablesGroups();
-            $outputVariablesGroups[] = &$currentTeamPlayerPerformances;
+            $outputVariablesGroups[] = $currentTeamPlayerPerformances;
         }
     }