diff options
Diffstat (limited to 'gi/posterior-regularisation/prjava/src/arr/F.java')
| -rw-r--r-- | gi/posterior-regularisation/prjava/src/arr/F.java | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/gi/posterior-regularisation/prjava/src/arr/F.java b/gi/posterior-regularisation/prjava/src/arr/F.java new file mode 100644 index 00000000..c194496e --- /dev/null +++ b/gi/posterior-regularisation/prjava/src/arr/F.java @@ -0,0 +1,70 @@ +package arr;
+
+public class F {
+ public static void randomise(double probs[])
+ {
+ double z = 0;
+ for (int i = 0; i < probs.length; ++i)
+ {
+ probs[i] = 3 + Math.random();
+ z += probs[i];
+ }
+
+ for (int i = 0; i < probs.length; ++i)
+ probs[i] /= z;
+ }
+
+ public static void l1normalize(double [] a){
+ double sum=0;
+ for(int i=0;i<a.length;i++){
+ sum+=a[i];
+ }
+ if(sum==0){
+ return ;
+ }
+ for(int i=0;i<a.length;i++){
+ a[i]/=sum;
+ }
+ }
+
+ public static void l1normalize(double [][] a){
+ double sum=0;
+ for(int i=0;i<a.length;i++){
+ for(int j=0;j<a[i].length;j++){
+ sum+=a[i][j];
+ }
+ }
+ if(sum==0){
+ return;
+ }
+ for(int i=0;i<a.length;i++){
+ for(int j=0;j<a[i].length;j++){
+ a[i][j]/=sum;
+ }
+ }
+ }
+
+ public static double l1norm(double a[]){
+ double norm=0;
+ for(int i=0;i<a.length;i++){
+ norm += a[i];
+ }
+ return norm;
+ }
+
+ public static int argmax(double probs[])
+ {
+ double m = Double.NEGATIVE_INFINITY;
+ int mi = -1;
+ for (int i = 0; i < probs.length; ++i)
+ {
+ if (probs[i] > m)
+ {
+ m = probs[i];
+ mi = i;
+ }
+ }
+ return mi;
+ }
+
+}
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