1 files changed, 25 insertions, 0 deletions
diff --git a/gi/posterior-regularisation/prjava/src/optimization/linesearch/InterpolationPickFirstStep.java b/gi/posterior-regularisation/prjava/src/optimization/linesearch/InterpolationPickFirstStep.java
new file mode 100644
index 00000000..0deebcdb
--- /dev/null
+++ b/gi/posterior-regularisation/prjava/src/optimization/linesearch/InterpolationPickFirstStep.java
@@ -0,0 +1,25 @@
+package optimization.linesearch;
+
+
+public class InterpolationPickFirstStep extends GenericPickFirstStep{
+	public InterpolationPickFirstStep(double initValue) {
+		super(initValue);
+	}
+	
+	public double getFirstStep(LineSearchMethod ls){
+		if(ls.getPreviousStepUsed() != -1 && ls.getPreviousInitialGradient()!=0){
+			double newStep = Math.min(300, 1.02*ls.getPreviousInitialGradient()*ls.getPreviousStepUsed()/ls.getInitialGradient());
+		//	System.out.println("proposing " + newStep);
+			return newStep;
+			
+		}
+		return _initValue;
+	}
+	public void collectInitValues(WolfRuleLineSearch ls){
+		
+	}
+	
+	public void collectFinalValues(WolfRuleLineSearch ls){
+		
+	}
+}