diff --git a/src/eva2/OptimizerFactory.java b/src/eva2/OptimizerFactory.java
index 48236972..aef7cd31 100644
--- a/src/eva2/OptimizerFactory.java
+++ b/src/eva2/OptimizerFactory.java
@@ -827,6 +827,12 @@ public class OptimizerFactory {
 		return runnable.getBinarySolution();
 	}
 
+	// ///////////////////////////// Optimize using a default strategy
+	public static BitSet optimizeToBinary(final int optType,
+			AbstractOptimizationProblem problem) {
+		return optimizeToBinary(optType, problem, null);
+	}
+	
 	// ///////////////////////////// Optimize using a default strategy
 	public static BitSet optimizeToBinary(final int optType,
 			AbstractOptimizationProblem problem, String outputFilePrefix) {
@@ -834,7 +840,7 @@ public class OptimizerFactory {
 				outputFilePrefix);
 		return (runnable != null) ? runnable.getBinarySolution() : null;
 	}
-
+	
 	// ///////////////////////////// Optimize a given runnable
 	public static BitSet optimizeToBinary(OptimizerRunnable runnable) {
 		optimize(runnable);
@@ -860,6 +866,11 @@ public class OptimizerFactory {
 		return runnable.getDoubleSolution();
 	}
 	
+	public static double[] optimizeToDouble(final int optType,
+			AbstractOptimizationProblem problem) {
+		return optimizeToDouble(optType, problem, null);
+	}
+	
 	public static double[] optimizeToDouble(final int optType,
 			AbstractOptimizationProblem problem, String outputFilePrefix) {
 		OptimizerRunnable runnable = optimize(optType, problem,
@@ -885,6 +896,11 @@ public class OptimizerFactory {
 				outputFilePrefix));
 		return runnable.getResult();
 	}
+	
+	public static IndividualInterface optimizeToInd(final int optType,
+			AbstractOptimizationProblem problem) {
+		return optimizeToInd(optType, problem, null);
+	}
 
 	public static IndividualInterface optimizeToInd(final int optType,
 			AbstractOptimizationProblem problem, String outputFilePrefix) {