(v1.3) | master : fixed randomized quick sort

description: fixed an issue with the implementation of randomized quick sort where, previously, due to an erroneous implementation, the randomized quick sort did not work properly and the whole pareto front could not be captured as the final output.

src/main/java/io/onclave/nsga/ii/api/Service.java

@@ -427,7 +427,7 @@ private static int randomizedPartition(ParetoObject[] paretoArray, int head, int
      */
     private static void randomizedQuickSort(ParetoObject[] paretoArray, int head, int tail, IObjectiveFunction objective) {
 
-        if(tail < head) {
+        if(head < tail) {
 
             int pivot = randomizedPartition(paretoArray, head, tail, objective);
 

src/main/java/io/onclave/nsga/ii/configuration/Configuration.java

@@ -20,9 +20,9 @@
  */
 public class Configuration {
 
-    private static final int POPULATION_SIZE = 1000;
+    private static final int POPULATION_SIZE = 800;
     private static final int GENERATIONS = 50;
-    private static final int CHROMOSOME_LENGTH = 30;
+    private static final int CHROMOSOME_LENGTH = 20;
     private static final float CROSSOVER_PROBABILITY = 0.7f;
     private static final float MUTATION_PROBABILITY = 0.03f;
     private static List<IObjectiveFunction> objectives = null;

src/main/java/io/onclave/nsga/ii/objectivefunction/ZDT1_1.java

@@ -0,0 +1,41 @@
+/*
+ * This code file and the codebase/software containing it is 
+ * explicitely licensed to Mr. Debabrata Acharya (@onclave)
+ * unauthorized use and access of the codebase, parts of the 
+ * codebase, software or parts of this software is not allowed.
+ */
+package io.onclave.nsga.ii.objectivefunction;
+
+import io.onclave.nsga.ii.Interface.IObjectiveFunction;
+import io.onclave.nsga.ii.datastructure.Chromosome;
+import io.onclave.nsga.ii.datastructure.ParetoObject;
+
+/**
+ *
+ * @author sajib
+ */
+public class ZDT1_1 implements IObjectiveFunction {
+
+    private static final String AXIS_TITLE = "x1";
+
+    @Override
+    public double objectiveFunction(double geneVaue) {
+        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
+    }
+
+    @Override
+    public double objectiveFunction(Chromosome chromosome) {
+        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
+    }
+
+    @Override
+    public double objectiveFunction(ParetoObject paretoObject) {
+        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
+    }
+
+    @Override
+    public String getAxisTitle() {
+        return AXIS_TITLE;
+    }
+
+}

src/main/java/io/onclave/nsga/ii/objectivefunction/ZDT1_2.java

@@ -0,0 +1,46 @@
+/*
+ * This code file and the codebase/software containing it is 
+ * explicitely licensed to Mr. Debabrata Acharya (@onclave)
+ * unauthorized use and access of the codebase, parts of the 
+ * codebase, software or parts of this software is not allowed.
+ */
+package io.onclave.nsga.ii.objectivefunction;
+
+import io.onclave.nsga.ii.Interface.IObjectiveFunction;
+import io.onclave.nsga.ii.datastructure.Chromosome;
+import io.onclave.nsga.ii.datastructure.ParetoObject;
+
+/**
+ *
+ * @author sajib
+ */
+public class ZDT1_2 implements IObjectiveFunction {
+
+    private static final String AXIS_TITLE = "g(x)[1 - sqrt(x1/g(x))]";
+    private static final int N = 30;
+
+    @Override
+    public double objectiveFunction(double geneVaue) {
+        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
+    }
+
+    @Override
+    public double objectiveFunction(Chromosome chromosome) {
+        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
+    }
+
+    @Override
+    public double objectiveFunction(ParetoObject paretoObject) {
+        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
+    }
+
+    private double g_x() {
+        throw new UnsupportedOperationException("Not supported yet."); //To change body of generated methods, choose Tools | Templates.
+    }
+
+    @Override
+    public String getAxisTitle() {
+        return AXIS_TITLE;
+    }
+
+}