Merging mk rev. 211, 212: Matlab interface now works with binary data using uint32 (GAIndividualIntegerData).

resources/MatlabInterface/@JEInterface/JEInterface.m

@@ -6,7 +6,7 @@ function int = JEInterface(interfaceName, fhandle, range, varargin)
 %       name as a String to allow callbacks from Java.
 %   fhandle: a function handle defining the optimization target.
 %   range: a 2 x dim array defining the solution subspace with lower and
-%      upper bounds.
+%      upper bounds - or a scalar defining the bitwidth for binary problems.
 %   optset: (optional) an optimset struct defining optimization parameters,
 %       especially tolerance and maximum function calls. Defaults to the
 %       EvA2 default values.
@@ -24,6 +24,11 @@ function int = JEInterface(interfaceName, fhandle, range, varargin)
 % and TolFun for a certain time, e.g. 100 evaluations.
 % To ignore a criterion, set it to 0. E.g. to perform 10^5 evaluations in
 % any case, set TolX=TolFun=0 and MaxFunEvals=10^5.
+%
+% You may define a 2xdim range with a double valued function handle or for
+% binary problems set a scalar as range defining the number of bits to be
+% used. The values passed to the function handle will then be arrays of 
+% uint32, each of them representing 32 bits.
 
 int.args = [];
 int.opts = optimset('MaxFunEvals', eva2.OptimizerFactory.getDefaultFitCalls, 'TolX', 1e-4, 'TolFun', 1e-4);
@@ -40,6 +45,7 @@ int.funCalls = 0;
 int.mediator = '';
 int.optParams = [];
 int.optParamValues = [];
+int.hexMask=hex2dec('ffffffff');
 
 if (isa(interfaceName, 'char'));
     int.callback = interfaceName;
@@ -56,7 +62,11 @@ if (isa(range, 'double') && (size(range,1) == 2))
     int.dim=length(range);
     int.range=transpose(range);
 else
-    error('Wrong third argument type, expected double array of 2 x dim');
+    %error('Wrong third argument type, expected double array of 2 x dim');
+    if (size(range,1)==size(range,2)==1)
+        int.range=[];
+        int.dim=range;
+    end
 end
 
 int = class(int,'JEInterface');
@@ -80,7 +90,7 @@ switch nargin
 end
 
 % finally create the java object
-int.mp = eva2.server.go.problems.MatlabProblem(int.callback, int.dim, int.range);
+int.mp = eva2.server.go.problems.MatlabProblem(int.dim, int.range);
 
         
 

resources/MatlabInterface/@JEInterface/convertUnsignedJE.m

@@ -0,0 +1,14 @@
+function [ z ] = convertUnsignedJE( int, x )
+%CONVERTUNSIGNEDJE Convert signed 32-bit integer to unsigned.
+%   Detailed explanation goes here
+
+z=zeros(size(x,1),size(x,2), 'uint32');
+for j=1 : size(x,1)
+    for i=1 : size(x,2) 
+        if (x(j,i) < 0) 
+            z(j,i) = 1+bitxor(uint32(-x(j,i)), int.hexMask);
+        else
+            z(j,i) = x(j,i);
+        end
+    end
+end

resources/MatlabInterface/@JEInterface/getResult.m

@@ -13,6 +13,10 @@ end
 if (isempty(sol)) 
     fit = NaN;
 else
+    if (isempty(int.range)) 
+        sol=convertUnsignedJE(int, sol);
+    end;
+        
     if (isempty(int.args))
         fit = feval(int.f, sol);
     else

resources/MatlabInterface/@JEInterface/runEvalLoopJE.m

@@ -64,11 +64,25 @@ try
         int.mediator.run;
         if (~int.mediator.isFinished())
             x = int.mediator.getQuestion();
+            if (isempty(int.range))
+                %size(x)
+                x=convertUnsignedJE(int, x);
+                %disp('here B');
+                %x
+            end
+%            size(x)
+            try
                 if (isempty(int.args))
                     res = feval(int.f, x);
                 else
                     res = feval(int.f, x, int.args);
                 end
+                %res
+            catch ME
+                disp('function evaluation failed:');
+                disp(ME.message);
+                stopOptimization=1;
+            end
             int.mediator.setAnswer(res);
             drawnow;
             if ((stopOptimization==1) && (stopOnce==1))
@@ -79,8 +93,9 @@ try
         end
     end
     clear global JEMediator;
-catch
+catch ME
     disp('Error in evaluate!');
+    disp(ME.message);
     %int.mediator.quit; % just in case
     %int.mediator='';
     

resources/MatlabInterface/@JEInterface/setResultJE.m

@@ -2,7 +2,6 @@ function int = setJEResult(int, result)
 % Interface function to be called by EvA2.
 
 % Write back the solution and retrieve some additional data.
-
 int.result = result;
 int.finished = 1;
 int.msg=int.mp.getInfoString;

src/eva2/server/go/individuals/AbstractEAIndividual.java

@@ -962,4 +962,34 @@ public abstract class AbstractEAIndividual implements IndividualInterface, java.
     	return isDominatingDebConstraints((AbstractEAIndividual)indy);
     }
 
+    /**
+     * Return the individual data (phenotype) as BitSet, int[], double[], int[] (coding permutation)
+     * or InterfaceProgram[].
+     * 
+     * @param individual
+     * @return
+     */
+	public static Object getIndyData(AbstractEAIndividual individual) {
+        if (individual instanceof InterfaceDataTypeBinary) {
+            BitSet b = ((InterfaceDataTypeBinary)individual).getBinaryData();
+            return b;
+        } else if (individual instanceof InterfaceDataTypeInteger) {
+            int[] b = ((InterfaceDataTypeInteger)individual).getIntegerData();
+            return b;
+        } else if (individual instanceof InterfaceDataTypeDouble) {
+            double[] b = ((InterfaceDataTypeDouble)individual).getDoubleData();
+            return b;
+        } else if (individual instanceof InterfaceDataTypePermutation) {
+            int[] b = ((InterfaceDataTypePermutation)individual).getPermutationData()[0];
+            return b;
+        } else if (individual instanceof InterfaceDataTypeProgram) {
+            InterfaceProgram[] b = ((InterfaceDataTypeProgram)individual).getProgramData();
+            return b;
+        } else {
+        	System.err.println("error in AbstractEAIndividual::getDefaultDataString: type " + individual.getClass() + " not implemented");
+        	return null;
         }
+	}
+
+}
+  

src/eva2/server/go/individuals/GAIndividualIntegerData.java

@@ -135,7 +135,7 @@ public class GAIndividualIntegerData extends AbstractEAIndividual implements Int
         return this.m_Range.length;
     }
 
-    /** This method will set the range of the double attributes. If range.length
+    /** This method will set the range of the integer attributes. If range.length
      * does not equal doubledata.length only range[i] will be used to set all
      * ranges.
      * @param range     The new range for the double data.
@@ -152,6 +152,32 @@ public class GAIndividualIntegerData extends AbstractEAIndividual implements Int
         this.setIntegerDataLength(range.length);
     }
 
+    /**
+     * Set lower and upper integer range in all dimensions.
+     * 
+     * @param lower
+     * @param upper
+     */
+    public void SetIntRange(int lower, int upper) {
+    	for (int i=0; i<m_Range.length; i++) {
+    		SetIntRange(i, lower, upper);
+            m_CodingLenghts[i] = m_IntegerCoding.calculateNecessaryBits(m_Range[i]);
+    	}
+    }
+    
+    /**
+     * Set lower and upper integer range in a specific dimension.
+     * 
+     * @param index
+     * @param lower
+     * @param upper
+     */
+    public void SetIntRange(int index, int lower, int upper) {
+   		m_Range[index][0] = lower;
+   		m_Range[index][1] = upper;
+   		m_CodingLenghts[index] = m_IntegerCoding.calculateNecessaryBits(m_Range[index]);
+    }
+    
     /** This method will return the range for all double attributes.
      * @return The range array.
      */

src/eva2/server/go/individuals/codings/ga/GAStandardCodingInteger.java

@@ -124,7 +124,7 @@ public class GAStandardCodingInteger implements InterfaceGAIntegerCoding, java.i
      */
     public int calculateNecessaryBits(int[] range) {
         int result = 0;
-        int maxStore = 1 + range[1] -range[0];
+        double maxStore = 1. + range[1] -range[0];
 
         while (Math.pow(2, result) < maxStore) result++;
 

src/eva2/server/go/problems/MatlabEvalMediator.java

@@ -1,5 +1,8 @@
 package eva2.server.go.problems;
 
+import java.lang.reflect.Array;
+import java.util.BitSet;
+
 import eva2.gui.BeanInspector;
 
 /**
@@ -26,11 +29,11 @@ public class MatlabEvalMediator implements Runnable {
 	volatile boolean requesting = false;
 //	final static boolean TRACE = false;
 	volatile boolean fin = false;
-	volatile double[] question = null;
+	volatile Object question = null;
 	volatile double[] answer = null;
 	boolean quit = false;
-	volatile double[] optSolution = null;
+	volatile Object optSolution = null;
-	volatile double[][] optSolSet = null;
+	volatile Object[] optSolSet = null;
 //	MatlabProblem mp = null;
 	// no good: even when waiting for only 1 ms the Matlab execution time increases by a factor of 5-10
 	final static int sleepTime = 0;
@@ -41,9 +44,18 @@ public class MatlabEvalMediator implements Runnable {
 	 * @param x
 	 * @return
 	 */
-	double[] requestEval(MatlabProblem mp, double[] x) {
+	double[] requestEval(MatlabProblem mp, Object x) {
 //		this.mp = mp;
 		question = x;
+//		System.err.println("IN REQUESTEVAL, x is " + BeanInspector.toString(x));
+		if (question.getClass().isArray()) {
+//			System.err.println("array of type ** " + Array.get(question, 0).getClass().toString());
+//		} else if (question instanceof BitSet){
+//			BitSet b = (BitSet)x;
+//			Integer.decode()
+//			
+		} else System.err.println("Error, requesting evaluation for non array!"); 
+		
 		requesting = true;
 //		int k=0;
 //		System.out.println("Requesting eval for " + BeanInspector.toString(x) + ", req state is " + requesting + "\n"); 
@@ -89,7 +101,7 @@ public class MatlabEvalMediator implements Runnable {
 	 * To be called from Matlab.
 	 * @return
 	 */
-	public double[] getQuestion() {
+	public Object getQuestion() {
 //		mp.log("-- Question: " + BeanInspector.toString(question) + "\n");
 		return question;
 	}
@@ -105,6 +117,7 @@ public class MatlabEvalMediator implements Runnable {
 	 */
 	public void setAnswer(double[] y) {
 //		mp.log("-- setAnswer: " + BeanInspector.toString(y) + "\n"); 
+//		System.err.println("answer is " + BeanInspector.toString(y)); 
 		answer = y;
 		requesting = false; // answer is finished, break request loop
 	}
@@ -121,13 +134,18 @@ public class MatlabEvalMediator implements Runnable {
 		return fin;
 	}
 	
-	void setSolution(double[] sol) {
+	void setSolution(Object sol) {
 		//System.out.println("setting Sol");
 		optSolution = sol;
 	}
 	
 	void setSolutionSet(double[][] solSet) {
-		//System.out.println("setting SolSet " + ((solSet != null) ? solSet.length : 0));
+//		System.err.println("setting SolSet " + ((solSet != null) ? solSet.length : 0));
+		optSolSet = solSet;
+	}
+	
+	void setSolutionSet(int[][] solSet) {
+//		System.err.println("setting SolSet " + ((solSet != null) ? solSet.length : 0));
 		optSolSet = solSet;
 	}
 	
@@ -135,17 +153,17 @@ public class MatlabEvalMediator implements Runnable {
 	 * Matlab may retrieve result.
 	 * @return
 	 */
-	public double[] getSolution() {
+	public Object getSolution() {
-		//System.out.println("getting Sol");
+//		System.err.println("getting Sol");
 		return optSolution;
 	}
 	
 	/**
-	 * Matlab may retrieve result.
+	 * Matlab may retrieve result as Object[] containing either double[] or int[].
 	 * @return
 	 */
-	public double[][] getSolutionSet() {
+	public Object[] getSolutionSet() {
-		//System.out.println("getting SolSet" + ((optSolSet != null) ? optSolSet.length : 0));
+//		System.err.println("getting SolSet " + ((optSolSet != null) ? optSolSet.length : 0));
 		return optSolSet;
 	}
 }

src/eva2/server/go/problems/MatlabProblem.java

@@ -3,16 +3,16 @@ package eva2.server.go.problems;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.PrintStream;
-import java.io.PrintWriter;
 import java.io.Serializable;
-import java.io.StringWriter;
 
 import eva2.OptimizerFactory;
 import eva2.OptimizerRunnable;
 import eva2.gui.BeanInspector;
 import eva2.server.go.individuals.AbstractEAIndividual;
 import eva2.server.go.individuals.ESIndividualDoubleData;
+import eva2.server.go.individuals.GAIndividualIntegerData;
 import eva2.server.go.individuals.InterfaceDataTypeDouble;
+import eva2.server.go.individuals.InterfaceDataTypeInteger;
 import eva2.server.go.operators.postprocess.InterfacePostProcessParams;
 import eva2.server.go.operators.postprocess.PostProcess;
 import eva2.server.go.operators.postprocess.PostProcessParams;
@@ -28,19 +28,18 @@ import eva2.server.stat.InterfaceTextListener;
  * @author mkron
  *
  */
-public class MatlabProblem extends AbstractProblemDouble implements InterfaceTextListener, Serializable {
+public class MatlabProblem extends AbstractOptimizationProblem implements InterfaceTextListener, Serializable {
 	private static final long serialVersionUID = 4913310869887420815L;
-	public static final boolean 		TRACE = false; 
+	public static final boolean 		TRACE = true; 
-//	transient protected Matlab			matlab = null;
 	transient OptimizerRunnable			runnable = null;
 	protected boolean 					allowSingleRunnable = true;	
-//	protected String 					jmInterface;
 	protected int 						problemDimension = 10;
 	transient PrintStream 				dos = null;
-	protected double[][] 				range = null;
+	private double 						range[][] =	null;
 	private static final String			defTestOut = "matlabproblem-testout.dat";
 	int 								verbosityLevel	= 0;
 	private MatlabEvalMediator 			handler = null;
+	private boolean isDouble = true;
 
 	public static boolean hideFromGOE = true; 
 
@@ -56,7 +55,8 @@ public class MatlabProblem extends AbstractProblemDouble implements InterfaceTex
 		this.problemDimension = o.problemDimension;
 //		this.res = new ResultArr();
 //		if (o.res != null) if (o.res.get() != null) res.set(o.res.get());
-		this.range = o.makeRange();
+		this.range = o.range;
+		this.isDouble = o.isDouble;
 //		this.mtCmd = o.mtCmd;
 //		currArray = null;
 	}
@@ -65,17 +65,16 @@ public class MatlabProblem extends AbstractProblemDouble implements InterfaceTex
 		return new MatlabProblem(this);
 	}
 
-	public MatlabProblem(String nameJEInterface, int dim) {
+	public MatlabProblem(int dim) {
-		this(nameJEInterface, dim, null);
+		this(dim, (double[][])null);
-		range = super.makeRange();
 	}
 
-	public MatlabProblem(String nameJEInterface, int dim, double[][] range) {
+	public MatlabProblem(int dim, double[][] range) {
-		init(nameJEInterface, dim, range, defTestOut);
+		init(dim, range, defTestOut);
 	}
 
-	public MatlabProblem(String nameJEInterface, int dim, double lower, double upper) {
+	public MatlabProblem(int dim, double lower, double upper) {
-		this(nameJEInterface, dim, null);
+		this(dim, null);
 		double[][] range = new double[dim][2];
 		for (int i=0; i<dim; i++) {
 			range[dim][0] = lower;
@@ -83,18 +82,45 @@ public class MatlabProblem extends AbstractProblemDouble implements InterfaceTex
 		}
 	}
 
+	protected void initTemplate() {
+		if (isDouble) {
+			if (m_Template == null) m_Template         = new ESIndividualDoubleData();
+			if (getProblemDimension() > 0) { // avoid evil case setting dim to 0 during object init
+				((InterfaceDataTypeDouble)this.m_Template).setDoubleDataLength(getProblemDimension());
+				((InterfaceDataTypeDouble)this.m_Template).SetDoubleRange(range);
+			}
+		} else {
+			m_Template         = new GAIndividualIntegerData();
+			int intLen = 1+((getProblemDimension()-1)/32);
+			int lastIntCodingBits = getProblemDimension()-((intLen-1)*32);
+			if (lastIntCodingBits > 32) System.err.println("ERROR in MatlabProblem:initTemplate");
+			((GAIndividualIntegerData)m_Template).setIntegerDataLength(intLen);
+			((GAIndividualIntegerData)m_Template).SetIntRange(Integer.MIN_VALUE, Integer.MAX_VALUE);
+			if (lastIntCodingBits < 32) ((GAIndividualIntegerData)m_Template).SetIntRange(intLen-1, 0, (int)Math.pow(2, lastIntCodingBits)-1);
+//			System.err.println("integer length is "+((GAIndividualIntegerData)m_Template).getIntegerData().length);
+//			System.err.println("Range is " + BeanInspector.toString(((GAIndividualIntegerData)m_Template).getIntRange()));
+//			m_Template         = new GAIndividualBinaryData();
+//			((GAIndividualBinaryData)m_Template).setBinaryDataLength(getProblemDimension());
+		}
+	}
+
 	public void setMediator(MatlabEvalMediator h) {
 		handler = h;
 	}
 
 	public void initProblem() {
-		init(/*this.jmInterface*/ null, this.problemDimension, this.range, defTestOut);
+		init(this.problemDimension, range, defTestOut);
 	}
 
-	private void init(String nameJEInterface, int dim, double[][] rng, String outFile) {
+	private void init(int dim, double[][] rng, String outFile) {
 		problemDimension = dim;
-		if ((rng != null) && (dim != rng.length)) throw new ArrayIndexOutOfBoundsException("Mismatching dimension and range!");
+//		if ((rng != null) && (dim != rng.length)) throw new ArrayIndexOutOfBoundsException("Mismatching dimension and range!");
 		range = rng;
+		if (range==null) isDouble = false;
+		else isDouble = true;
+
+//		System.err.println("isDouble: " + isDouble);
+//		System.err.println("range: " + BeanInspector.toString(range));
 		initTemplate();
 //		res = new ResultArr();
 		if ((dos == null) && TRACE) {
@@ -105,39 +131,10 @@ public class MatlabProblem extends AbstractProblemDouble implements InterfaceTex
 			}
 		}
 
-		log("range is " + BeanInspector.toString(range)+ "\n");
+//		log("range is " + BeanInspector.toString(range)+ "\n");
-		log("template len: " + ((ESIndividualDoubleData)m_Template).getDGenotype().length + "\n");
+//		log("template len: " + ((ESIndividualDoubleData)m_Template).getDGenotype().length + "\n");
-//		try {
-//			if (matlab == null)
-//				matlab = new Matlab();//this command links to the current matlab session
-//			try {
-//				matlab.eval("JE='hello'");
-//			} catch (Exception e) {
-//				e.printStackTrace();
-//			}
-//		} catch (Error e) {
-//			log("Error: " + e.toString());
-//			System.err.println("Error: could not create MatlabProblem instance. MatlabProblem can only be used from Matlab.");
-//		}
-		
-//		this.jmInterface = nameJEInterface;
-//		mtCmd = new String("evaluateJE("+jmInterface+")");
 	}
 
-//	/**
-//	 * @return the jmInterface
-//	 */
-//	public String getJmInterfaceName() {
-//		return jmInterface;
-//	}
-
-//	/**
-//	 * @param jmInterface the jmInterface to set
-//	 */
-//	public void setJmInterfaceName(String jmInterface) {
-//		this.jmInterface = jmInterface;
-//	}
-	
 	public void setStatsOutput(int verboLevel) {
 		if ((verboLevel >= 0) && (verboLevel <= 3)) {
 			verbosityLevel = verboLevel;
@@ -165,23 +162,23 @@ public class MatlabProblem extends AbstractProblemDouble implements InterfaceTex
 		return "The dimension of the problem.";
 	}
 
-	public double[][] makeRange() {
+//	public double[][] makeRange() {
-		if (range==null) range=super.makeRange();
+//	if (range==null) range=super.makeRange();
-		return range;
+//	return range;
-	}	
+//	}	
 
-	protected double getRangeLowerBound(int dim) {
+//	protected double getRangeLowerBound(int dim) {
-		return (range==null) ? super.getRangeLowerBound(dim) : range[dim][0];
+//	return (range==null) ? super.getRangeLowerBound(dim) : range[dim][0];
-	}
+//	}
 
-	protected double getRangeUpperBound(int dim) {
+//	protected double getRangeUpperBound(int dim) {
-		return (range==null) ? super.getRangeUpperBound(dim) : range[dim][1];
+//	return (range==null) ? super.getRangeUpperBound(dim) : range[dim][1];
-	}
+//	}
 
 //	public double[] getCurrentDoubleArray() {
 //	return currArray;
 //	}
-//
+
 //	public double[] getNewDoubleArray() {
 //	currArray = new double[problemDimension];
 //	for (int i=0; i<problemDimension; i++) currArray[i] = RNG.gaussianDouble(1);
@@ -195,32 +192,6 @@ public class MatlabProblem extends AbstractProblemDouble implements InterfaceTex
 		}
 	}
 
-	public double[] eval(double[] x) {
-		log("evaluating " + BeanInspector.toString(x) + "\n");
-		double[] res = handler.requestEval(this, x);
-//		double diff = PhenotypeMetric.euclidianDistance(res, f1.eval(x));
-//		log("result: " + BeanInspector.toString(res) + " compared to " + BeanInspector.toString(f1.eval(x)) + "\n");
-//		if (diff != 0) {
-//			log("!!! diff is " + diff + "\n");
-//		}
-		return res;
-		
-//		synchronized (this) {
-//			try {
-//				res.reset();
-//				currArray = x;
-//				log("evaluating " + BeanInspector.toString(x) + "\n");
-//				matlab.eval(mtCmd, (CompletionObserver)this);
-//				this.wait();
-//			} catch (InterruptedException e) {
-//				log("wait interrupted: " + e.getMessage() + " \n");
-//			}
-//		}
-//		log("wait done, returning " + res.get()[0] + " \n");
-//		return res.get();
-	}
-
-
 	public void optimize(final int optType, String outputFilePrefix) {
 		optimize(optType, outputFilePrefix, null, null);
 	}
@@ -330,59 +301,41 @@ public class MatlabProblem extends AbstractProblemDouble implements InterfaceTex
 		if (runnable == null) return 0;
 		return runnable.getGOParams().getOptimizer().getPopulation().getFunctionCalls();
 	}
-//	
+
 //	Matlab getMatlab() {
 //	return matlab;
 //	}
-//	
+
 	void exportResultPopulationToMatlab(Population pop) {
-		double[][] solSet;
 		if ((pop != null) && (pop.size()>0)) {
-			solSet = new double[pop.size()][];
+			if (isDouble) {
+				double[][] solSet = new double[pop.size()][];
 				for (int i=0; i<pop.size(); i++) {
 					solSet[i]=((InterfaceDataTypeDouble)pop.getEAIndividual(i)).getDoubleData();
 				}
 				handler.setSolutionSet(solSet);
 			} else {
-			handler.setSolutionSet(null);
+				int[][] solSet = new int[pop.size()][];
+				for (int i=0; i<pop.size(); i++) {
+					solSet[i]=((InterfaceDataTypeInteger)pop.getEAIndividual(i)).getIntegerData();
+				}
+				handler.setSolutionSet(solSet);
+			}
+		} else {
+			if (isDouble) handler.setSolutionSet((double[][])null);
+			else handler.setSolutionSet((int[][])null);
 		}
-//		String resStr;
-//		if ((pop == null) || (pop.size() == 0)) resStr = "[]";
-//		else {
-//			StringBuffer sb = new StringBuffer();
-//			sb.append("[");
-//			for (int i=0; i<pop.size(); i++) {
-//				sb.append(AbstractEAIndividual.getDefaultDataString(pop.getEAIndividual(i), " "));
-//				if (i<pop.size()-1) sb.append(";");
-//			}
-//			sb.append("]");
-//			resStr = sb.toString();
-//		}
-//		log("result array was " + resStr + "\n");
-//		try {
-//			String cmd = jmInterface + "= setResultArrayJE(" + jmInterface + ", " + resStr + ")";
-//			log("trying cmd: "+ cmd + "\n");
-//			matlab.eval(cmd);
-//		} catch (Exception e) {
-//			log("Exception when exporting result to Matlab! "+e.getMessage());
-//		}
 	}
 
-	void exportResultToMatlab(double[] result) {
+	void exportResultToMatlab(OptimizerRunnable runnable) {
-		handler.setSolution(result);
+		if (isDouble) handler.setSolution(runnable.getDoubleSolution());
-//		String resStr;
+		else handler.setSolution(runnable.getIntegerSolution());
-//		if (result == null) resStr = "[]";
-//		else resStr = BeanInspector.toString(result);
-//		log("result was " + resStr + "\n");
-//		try {
-//			String cmd = jmInterface + "= setResultJE(" + jmInterface + ", " + resStr + ")";
-//			log("trying cmd: "+ cmd + "\n");
-//			matlab.eval(cmd);
-//		} catch (Exception e) {
-//			log("Exception when exporting result to Matlab! "+e.getMessage());
-//		}
 	}
 
+//	void exportResultToMatlab(double[] result) {
+//		handler.setSolution(result);
+//	}
+
 	/**
 	 * To be called by the executing thread to inform that the thread is finished.
 	 * We 
@@ -391,9 +344,12 @@ public class MatlabProblem extends AbstractProblemDouble implements InterfaceTex
 		handler.setFinished(true);
 	}
 
-	public double[] getIntermediateResult() {
+	public Object getIntermediateResult() {
 		if (runnable == null) return null;
-		else return runnable.getDoubleSolution();
+		else {
+			if (isDouble) return runnable.getDoubleSolution();
+			else return runnable.getIntegerSolution();
+		}
 	}
 
 	/**
@@ -421,57 +377,43 @@ public class MatlabProblem extends AbstractProblemDouble implements InterfaceTex
 		print(str);
 		print("\n");		
 	}
+	//
+//	public double[] eval(double[] x) {
+//	log("evaluating " + BeanInspector.toString(x) + "\n");
+//	double[] res = handler.requestEval(this, x);
+//	return res;
+//	}
+
+	@Override
+	public void evaluate(AbstractEAIndividual indy) {
+		log("evaluating " + BeanInspector.toString(indy) + "\n");
+		double[] res = handler.requestEval(this, AbstractEAIndividual.getIndyData(indy));
+		indy.SetFitness(res);
+//		System.err.println("evaluated to " + BeanInspector.toString(res));
 	}
 
-////////////////////////////
+	@Override
+	public void initPopulation(Population population) {
+		AbstractEAIndividual tmpIndy;
+		population.clear();
+		initTemplate();
 
-class WaitForEvARunnable implements Runnable {
+		for (int i = 0; i < population.getPopulationSize(); i++) {
-	OptimizerRunnable runnable;
+			tmpIndy = (AbstractEAIndividual)((AbstractEAIndividual)this.m_Template).clone();
-	MatlabProblem mp;
+			tmpIndy.init(this);
-	
+//			System.err.println("initPopulation: " + AbstractEAIndividual.getDefaultDataString(tmpIndy) + " , " + tmpIndy.getStringRepresentation());
-	public WaitForEvARunnable(OptimizerRunnable runnable, MatlabProblem mp) {
+			population.add(tmpIndy);
-		this.runnable = runnable;
+		}
-		this.mp = mp;
+		// population init must be last
+		// it set's fitcalls and generation to zero
+		population.init();
 	}
 
-	public void run() {
+	public String getStringRepresentationForProblem(InterfaceOptimizer opt) {
-		if (runnable != null) {
+        StringBuffer sb = new StringBuffer(200);
-			mp.log("\nStarting optimize runnable!\n");
+        sb.append("A general Matlab problem");
-
+        sb.append(this.getName());
-			synchronized (runnable) {
+        //sb.append("\n");
-				try {
+        return sb.toString();
-					// whole optimization thread goes in here
-					new Thread(runnable).start();
-					mp.log("Starting optimize thread done!\n");
-					runnable.wait();
-					// wait for the runnable to finish
-					mp.log("After wait!\n");
-				} catch (InterruptedException e) {
-					e.printStackTrace();
-					mp.log("WaitForEvARunnable was interrupted with " + e.getMessage());
 	}
 }
-			try {
-				mp.log("runnable.getSolution: " + BeanInspector.toString(runnable.getDoubleSolution()));
-				mp.log("\ngetAllSols best: " + AbstractEAIndividual.getDefaultDataString(runnable.getGOParams().getOptimizer().getAllSolutions().getSolutions().getBestEAIndividual()));
-				mp.log("\n");
-				// write results back to matlab
-				mp.exportResultToMatlab(runnable.getDoubleSolution());
-				mp.exportResultPopulationToMatlab(runnable.getSolutionSet());
-				System.out.println("Optimization finished: " + mp.getInfoString());
-			} catch (Exception e) {
-				StringWriter sw = new StringWriter();
-				e.printStackTrace(new PrintWriter(sw));
-				mp.log("error in callback: " + e.getMessage() + " " + sw.toString() + "\n");
-			}
-		} else {
-			System.err.println("Invalid optimization call.");
-			mp.log("invalid call, no optimization started.\n");
-			mp.exportResultToMatlab(null);
-			mp.exportResultPopulationToMatlab(null);
-		}
-		mp.notifyFinished();
-		mp.log("notified finish...");
-	}
-	
-}

src/eva2/server/go/problems/WaitForEvARunnable.java

@@ -0,0 +1,60 @@
+package eva2.server.go.problems;
+
+import java.io.PrintWriter;
+import java.io.StringWriter;
+
+import eva2.OptimizerRunnable;
+import eva2.gui.BeanInspector;
+import eva2.server.go.individuals.AbstractEAIndividual;
+
+class WaitForEvARunnable implements Runnable {
+	OptimizerRunnable runnable;
+	MatlabProblem mp;
+
+	public WaitForEvARunnable(OptimizerRunnable runnable, MatlabProblem mp) {
+		this.runnable = runnable;
+		this.mp = mp;
+	}
+
+	public void run() {
+		if (runnable != null) {
+			mp.log("\nStarting optimize runnable!\n");
+
+			synchronized (runnable) {
+				try {
+					// whole optimization thread goes in here
+					new Thread(runnable).start();
+					mp.log("Starting optimize thread done!\n");
+					runnable.wait();
+					// wait for the runnable to finish
+					mp.log("After wait!\n");
+				} catch (InterruptedException e) {
+					e.printStackTrace();
+					mp.log("WaitForEvARunnable was interrupted with " + e.getMessage());
+				}
+			}
+			try {
+				mp.log("runnable.getDoubleSolution: " + BeanInspector.toString(runnable.getDoubleSolution()));
+				mp.log("runnable.getIntegerSolution: " + BeanInspector.toString(runnable.getIntegerSolution()));
+				mp.log("\ngetAllSols best: " + AbstractEAIndividual.getDefaultDataString(runnable.getGOParams().getOptimizer().getAllSolutions().getSolutions().getBestEAIndividual()));
+				mp.log("\n");
+				// write results back to matlab
+				mp.exportResultToMatlab(runnable);
+				mp.exportResultPopulationToMatlab(runnable.getSolutionSet());
+				System.out.println("Optimization finished: " + mp.getInfoString());
+			} catch (Exception e) {
+				StringWriter sw = new StringWriter();
+				e.printStackTrace(new PrintWriter(sw));
+				mp.log("error in callback: " + e.getMessage() + " " + sw.toString() + "\n");
+			}
+		} else {
+			System.err.println("Invalid optimization call.");
+			mp.log("invalid call, no optimization started.\n");
+			mp.exportResultToMatlab(null);
+			mp.exportResultPopulationToMatlab(null);
+		}
+		mp.notifyFinished();
+		mp.log("notified finish...");
+	}
+
+}

src/eva2/server/go/strategies/MonteCarloSearch.java

@@ -9,9 +9,13 @@ import eva2.server.go.populations.SolutionSet;
 import eva2.server.go.problems.B1Problem;
 import eva2.server.go.problems.InterfaceOptimizationProblem;
 
-/** The simple random or Monte-Carlo search, simple but useful
+/** 
+ * The simple random or Monte-Carlo search, simple but useful
  * to evaluate the complexity of the search space.
- * This implements a Random Walk Search.
+ * This implements a Random Walk Search using the initialization
+ * method of the problem instance, meaning that the random characteristics
+ * may be problem dependent.
+ * 
  * Copyright:       Copyright (c) 2003
  * Company:         University of Tuebingen, Computer Architecture
  * @author          Felix Streichert
@@ -71,7 +75,9 @@ public class MonteCarloSearch implements InterfaceOptimizer, java.io.Serializabl
         }
     }
 
-    /** This method will optimize
+    /** 
+     * This method will optimize without specific operators, by just calling the problem method
+     * for population initialization.
      */
     public void optimize() {
         Population original = (Population)this.m_Population.clone();