diff --git a/pmml-model/src/main/java/org/dmg/pmml/neural_network/HasNormalizationMethod.java b/pmml-model/src/main/java/org/dmg/pmml/neural_network/HasNormalizationMethod.java
index <HASH>..<HASH> 100644
--- a/pmml-model/src/main/java/org/dmg/pmml/neural_network/HasNormalizationMethod.java
+++ b/pmml-model/src/main/java/org/dmg/pmml/neural_network/HasNormalizationMethod.java
@@ -7,6 +7,17 @@ import org.dmg.pmml.PMMLObject;
 
 public interface HasNormalizationMethod<E extends PMMLObject & HasNormalizationMethod<E>> {
 
+	default
+	NeuralNetwork.NormalizationMethod getNormalizationMethod(NeuralNetwork.NormalizationMethod defaultNormalizationMethod){
+		NeuralNetwork.NormalizationMethod normalizationMethod = getNormalizationMethod();
+
+		if(normalizationMethod == null){
+			return defaultNormalizationMethod;
+		}
+
+		return normalizationMethod;
+	}
+
 	NeuralNetwork.NormalizationMethod getNormalizationMethod();
 
 	E setNormalizationMethod(NeuralNetwork.NormalizationMethod normalizationMethod);
Added method HasNormalizationMethod#getNormalizationMethod(NeuralNetwork$NormalizationMethod)