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-rw-r--r--src/jcgp/fitness/FitnessEvaluator.java17
-rw-r--r--src/jcgp/function/FunctionSet.java38
-rw-r--r--src/jcgp/population/Chromosome.java98
-rw-r--r--src/jcgp/population/Population.java23
4 files changed, 93 insertions, 83 deletions
diff --git a/src/jcgp/fitness/FitnessEvaluator.java b/src/jcgp/fitness/FitnessEvaluator.java
new file mode 100644
index 0000000..5ecf679
--- /dev/null
+++ b/src/jcgp/fitness/FitnessEvaluator.java
@@ -0,0 +1,17 @@
+package jcgp.fitness;
+
+import jcgp.population.Population;
+
+public class FitnessEvaluator {
+
+ private FitnessFunction fitnessFunction;
+
+ public FitnessEvaluator(FitnessFunction fitnessFunction) {
+ this.fitnessFunction = fitnessFunction;
+ }
+
+ public void evaluateFitness(Population population) {
+
+ }
+
+}
diff --git a/src/jcgp/function/FunctionSet.java b/src/jcgp/function/FunctionSet.java
index 30e1067..cbe2f05 100644
--- a/src/jcgp/function/FunctionSet.java
+++ b/src/jcgp/function/FunctionSet.java
@@ -1,37 +1,39 @@
package jcgp.function;
-import java.util.ArrayList;
-
-
+/**
+ *
+ * TODO: if function set flexibility is desired (i.e. add more functions as the program runs)
+ * an add function method should be created
+ * this would lead to concurrency problems, so tread lightly!
+ *
+ *
+ * @author Eduardo Pedroni
+ *
+ */
public class FunctionSet {
- private ArrayList<Function> functionList;
+ private Function[] functionList;
+ private int maxArity = 0;
public FunctionSet(Function ... functions) {
- functionList = new ArrayList<Function>(functions.length);
+ functionList = functions;
- for (int i = 0; i < functions.length; i++) {
- functionList.add(functions[i]);
+ for (Function function : functionList) {
+ if (function.getArity() > maxArity) {
+ maxArity = function.getArity();
+ }
}
+
}
public int getFunctionCount() {
- return functionList.size();
+ return functionList.length;
}
public Function getFunction(int index) {
- return functionList.get(index);
+ return functionList[index];
}
public int getMaxArity(){
-
- int maxArity = 0;
-
- for (Function function : functionList) {
- if (function.getArity() > maxArity) {
- maxArity = function.getArity();
- }
- }
-
return maxArity;
}
} \ No newline at end of file
diff --git a/src/jcgp/population/Chromosome.java b/src/jcgp/population/Chromosome.java
index 76667e5..70e8836 100644
--- a/src/jcgp/population/Chromosome.java
+++ b/src/jcgp/population/Chromosome.java
@@ -1,14 +1,13 @@
package jcgp.population;
-import java.util.ArrayList;
-
+import jcgp.CGP.Parameters;
import jcgp.CGP.Utilities;
public class Chromosome {
- private final ArrayList<Input> inputs = new ArrayList<Input>();
- private final ArrayList<ArrayList<Node>> nodes = new ArrayList<ArrayList<Node>>();;
- private final ArrayList<Output> outputs = new ArrayList<Output>();
+ private Input[] inputs;
+ private Node[][] nodes;
+ private Output[] outputs;
private int fitness = 0;
@@ -29,25 +28,6 @@ public class Chromosome {
}
- private void initialiseConnections() {
-
- // initialise nodes
- for (int r = 0; r < nodes.size(); r++) {
- for (int c = 0; c < nodes.size(); c++) {
- Connection[] connections = new Connection[Utilities.getMaxArity()];
- for (int i = 0; i < connections.length; i++) {
- connections[i] = Utilities.getRandomConnection(this, c);
- }
- nodes.get(r).get(c).initialise(Utilities.getRandomFunction(), connections);
- }
- }
-
- for (Output output : outputs) {
- output.setConnection(Utilities.getRandomNode(this));
- }
-
- }
-
/**
* @param inputCount
* @param rows
@@ -55,58 +35,58 @@ public class Chromosome {
* @param outputCount
*/
private void instantiateElements(int inputCount, int rows, int columns, int outputCount) {
+ inputs = new Input[inputCount];
for (int i = 0; i < inputCount; i++) {
- inputs.add(new Input());
+ inputs[i] = new Input();
}
// rows first
+ nodes = new Node[Parameters.getRows()][Parameters.getColumns()];
for (int r = 0; r < rows; r++) {
- nodes.add(new ArrayList<Node>(columns));
+ //nodes[r] = new Node[Parameters.getColumns()];
for (int c = 0; c < columns; c++) {
- nodes.get(r).add(new Node());
+ nodes[r][c] = new Node();
}
}
-
+ outputs = new Output[outputCount];
for (int o = 0; o < outputCount; o++) {
- outputs.add(new Output());
+ outputs[o] = new Output();
+ }
+ }
+
+ private void initialiseConnections() {
+
+ // initialise nodes - [rows][columns]
+ for (int r = 0; r < nodes.length; r++) {
+ for (int c = 0; c < nodes.length; c++) {
+ Connection[] connections = new Connection[Utilities.getMaxArity()];
+ for (int i = 0; i < connections.length; i++) {
+ connections[i] = Utilities.getRandomConnection(this, c);
+ }
+ nodes[r][c].initialise(Utilities.getRandomFunction(), connections);
+ }
+ }
+
+ for (Output output : outputs) {
+ output.setConnection(Utilities.getRandomNode(this));
}
+
}
public int getActiveNodeCount() {
return 0;
}
- /**
- * @return the inputs
- */
- public ArrayList<Input> getInputs() {
- return inputs;
- }
-
- /**
- * @return the nodes
- */
- public ArrayList<ArrayList<Node>> getNodes() {
- return nodes;
- }
-
- /**
- * @return the outputs
- */
- public ArrayList<Output> getOutputs() {
- return outputs;
- }
-
public Node getNode(int row, int column) {
- return nodes.get(row).get(column);
+ return nodes[row][column];
}
public Output getOutput(int index) {
- return outputs.get(index);
+ return outputs[index];
}
public Input getInput(int index) {
- return inputs.get(index);
+ return inputs[index];
}
public int getFitness() {
@@ -117,4 +97,16 @@ public class Chromosome {
fitness = newFitness;
}
+ public void setInputs(int ... values) {
+ // if the values provided dont match the specified number of inputs, the user should be warned
+ if (values.length == inputs.length) {
+ // set inputs for evaluation
+ for (int i = 0; i < values.length; i++) {
+ inputs[i].setValue(values[i]);
+ }
+ } else {
+ System.out.println("Input mismatch: chromosome has a different number of inputs than the truth table.");
+ }
+ }
+
}
diff --git a/src/jcgp/population/Population.java b/src/jcgp/population/Population.java
index 67b6695..55f756a 100644
--- a/src/jcgp/population/Population.java
+++ b/src/jcgp/population/Population.java
@@ -1,21 +1,20 @@
package jcgp.population;
-import java.util.ArrayList;
import java.util.Iterator;
import jcgp.CGP.Parameters;
-public final class Population implements Iterable<Chromosome> {
+public class Population implements Iterable<Chromosome> {
- private ArrayList<Chromosome> population;
+ private Chromosome[] population;
public Population() {
- population = new ArrayList<Chromosome>(Parameters.getPopulationSize());
- for (int c = 0; c < Parameters.getPopulationSize(); c++) {
- population.add(new Chromosome(Parameters.getInputs(),
- Parameters.getRows(),
- Parameters.getColumns(),
- Parameters.getOutputs()));
+ population = new Chromosome[Parameters.getPopulationSize()];
+ for (int c = 0; c < population.length; c++) {
+ population[c] = new Chromosome(Parameters.getInputs(),
+ Parameters.getRows(),
+ Parameters.getColumns(),
+ Parameters.getOutputs());
}
}
@@ -27,7 +26,7 @@ public final class Population implements Iterable<Chromosome> {
@Override
public boolean hasNext() {
- if (index < population.size()) {
+ if (index < population.length) {
return true;
} else {
return false;
@@ -36,14 +35,14 @@ public final class Population implements Iterable<Chromosome> {
@Override
public Chromosome next() {
- Chromosome next = population.get(index);
+ Chromosome next = population[index];
index++;
return next;
}
@Override
public void remove() {
- // not allowed
+ // not allowed
}
};