diff options
Diffstat (limited to 'gi/posterior-regularisation/prjava/src/arr/F.java')
| -rw-r--r-- | gi/posterior-regularisation/prjava/src/arr/F.java | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/gi/posterior-regularisation/prjava/src/arr/F.java b/gi/posterior-regularisation/prjava/src/arr/F.java index 54dadeac..79de5d1a 100644 --- a/gi/posterior-regularisation/prjava/src/arr/F.java +++ b/gi/posterior-regularisation/prjava/src/arr/F.java @@ -56,6 +56,7 @@ public class F { }
public static double l1norm(double a[]){
+ // FIXME: this isn't the l1 norm for a < 0
double norm=0;
for(int i=0;i<a.length;i++){
norm += a[i];
@@ -63,6 +64,14 @@ public class F { return norm;
}
+ public static double l2norm(double a[]){
+ double norm=0;
+ for(int i=0;i<a.length;i++){
+ norm += a[i]*a[i];
+ }
+ return Math.sqrt(norm);
+ }
+
public static int argmax(double probs[])
{
double m = Double.NEGATIVE_INFINITY;
|