Changeset 15315 for branches/jschiess/HeuristicLab.Algorithms.SimulatedAnnealing/3.4/AcceptanceRatioReheatingOperator.cs

Timestamp:

08/09/17 10:37:45 (7 years ago)

Author:

jschiess

Message:

#1836 SA reheating strategies:
+ Finalized strategies
+ Added temperature initializer mechanism

File:

• branches/jschiess/HeuristicLab.Algorithms.SimulatedAnnealing/3.4/AcceptanceRatioReheatingOperator.cs (modified) (5 diffs)

branches/jschiess/HeuristicLab.Algorithms.SimulatedAnnealing/3.4/AcceptanceRatioReheatingOperator.cs

@@ -16 +16 @@
 namespace HeuristicLab.Algorithms.SimulatedAnnealing
 {
-    [Item("AcceptanceRatioReheatingOperator", "Reheats the temperature if the acceptance is below a threshold.")]
+    [Item("AcceptanceRatioReheatingOperator", "Reheats the temperature if the acceptance is below a threshold until it is above another one.")]
     [StorableClass]
     public class AcceptanceRatioReheatingOperator : SingleSuccessorOperator, IReheatingOperator
@@ -38 +38 @@
         private const string AcceptanceMemoryName = "AcceptanceMemory";
         private const string AverageAcceptanceRatioName = "AverageAcceptanceRatio";
+        private const string ReheatWindowSizeName = "ReheatWindowSize";
 
 
@@ -105 +106 @@
         {
             get { return (ILookupParameter<DoubleValue>)Parameters[AverageAcceptanceRatioName]; }
+        }
+        public IValueParameter<IntValue> ReheatWindowSizeParameter
+        {
+            get { return (IValueParameter<IntValue>)Parameters[ReheatWindowSizeName]; }
         }
 
@@ -128 +133 @@
             Parameters.Add(new ValueParameter<IntValue>(MemorySizeName, "The maximum size of the acceptance memory.", new IntValue(100)));
             Parameters.Add(new LookupParameter<DoubleValue>(AverageAcceptanceRatioName, "Average acceptance over full acceptance memory."));
+            Parameters.Add(new ValueParameter<IntValue>(ReheatWindowSizeName, "The amount of iterations each reheat needs to heat the current temperature to upper temperature.", new IntValue(10000)));
             #endregion
 
@@ -204 +210 @@
                     StartTemperatureParameter.ActualValue.Value = TemperatureParameter.ActualValue.Value;
                     EndTemperatureParameter.ActualValue.Value = UpperTemperatureParameter.ActualValue.Value;
+                    ReheatingOperatorParameter.Value.EndIndexParameter.Value = new IntValue(
+                        Math.Min(MaximumIterationsParameter.ActualValue.Value, IterationsParameter.ActualValue.Value + ReheatWindowSizeParameter.Value.Value));
                 }