diff options
Diffstat (limited to 'gi/posterior-regularisation/prjava/src/optimization/linesearch/NonNewtonInterpolationPickFirstStep.java')
-rw-r--r-- | gi/posterior-regularisation/prjava/src/optimization/linesearch/NonNewtonInterpolationPickFirstStep.java | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/gi/posterior-regularisation/prjava/src/optimization/linesearch/NonNewtonInterpolationPickFirstStep.java b/gi/posterior-regularisation/prjava/src/optimization/linesearch/NonNewtonInterpolationPickFirstStep.java new file mode 100644 index 00000000..4b354fd9 --- /dev/null +++ b/gi/posterior-regularisation/prjava/src/optimization/linesearch/NonNewtonInterpolationPickFirstStep.java @@ -0,0 +1,33 @@ +package optimization.linesearch; + +/** + * Non newtwon since we don't always try 1... + * Not sure if that is even usefull for newton + * @author javg + * + */ +public class NonNewtonInterpolationPickFirstStep extends GenericPickFirstStep{ + public NonNewtonInterpolationPickFirstStep(double initValue) { + super(initValue); + } + + public double getFirstStep(LineSearchMethod ls){ +// System.out.println("Previous step used " + ls.getPreviousStepUsed()); +// System.out.println("PreviousGradinebt " + ls.getPreviousInitialGradient()); +// System.out.println("CurrentGradinebt " + ls.getInitialGradient()); + if(ls.getPreviousStepUsed() != -1 && ls.getPreviousInitialGradient()!=0){ + double newStep = 1.01*ls.getPreviousInitialGradient()*ls.getPreviousStepUsed()/ls.getInitialGradient(); + //System.out.println("Suggesting " + newStep); + return newStep; + + } + return _initValue; + } + public void collectInitValues(WolfRuleLineSearch ls){ + + } + + public void collectFinalValues(WolfRuleLineSearch ls){ + + } +} |