diff options
Diffstat (limited to 'gi/posterior-regularisation/prjava/src/optimization/stopCriteria/GradientL2Norm.java')
-rw-r--r-- | gi/posterior-regularisation/prjava/src/optimization/stopCriteria/GradientL2Norm.java | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/gi/posterior-regularisation/prjava/src/optimization/stopCriteria/GradientL2Norm.java b/gi/posterior-regularisation/prjava/src/optimization/stopCriteria/GradientL2Norm.java new file mode 100644 index 00000000..534ff833 --- /dev/null +++ b/gi/posterior-regularisation/prjava/src/optimization/stopCriteria/GradientL2Norm.java @@ -0,0 +1,30 @@ +package optimization.stopCriteria; + +import optimization.gradientBasedMethods.Objective; +import optimization.util.MathUtils; + +public class GradientL2Norm implements StopingCriteria{ + + /** + * Stop if gradientNorm/(originalGradientNorm) smaller + * than gradientConvergenceValue + */ + protected double gradientConvergenceValue; + + + public GradientL2Norm(double gradientConvergenceValue){ + this.gradientConvergenceValue = gradientConvergenceValue; + } + + public void reset(){} + + public boolean stopOptimization(Objective obj){ + double norm = MathUtils.L2Norm(obj.gradient); + if(norm < gradientConvergenceValue){ + System.out.println("Gradient norm below treshold"); + return true; + } + return false; + + } +} |