diff options
| author | Chris Dyer <cdyer@cs.cmu.edu> | 2012-10-11 14:06:32 -0400 |
|---|---|---|
| committer | Chris Dyer <cdyer@cs.cmu.edu> | 2012-10-11 14:06:32 -0400 |
| commit | 9339c80d465545aec5a6dccfef7c83ca715bf11f (patch) | |
| tree | 64c56d558331edad1db3832018c80e799551c39a /gi/posterior-regularisation/prjava/src/arr | |
| parent | 438dac41810b7c69fa10203ac5130d20efa2da9f (diff) | |
| parent | afd7da3b2338661657ad0c4e9eec681e014d37bf (diff) | |
Merge branch 'master' of https://github.com/redpony/cdec
Diffstat (limited to 'gi/posterior-regularisation/prjava/src/arr')
| -rw-r--r-- | gi/posterior-regularisation/prjava/src/arr/F.java | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/gi/posterior-regularisation/prjava/src/arr/F.java b/gi/posterior-regularisation/prjava/src/arr/F.java deleted file mode 100644 index be0a6ed6..00000000 --- a/gi/posterior-regularisation/prjava/src/arr/F.java +++ /dev/null @@ -1,99 +0,0 @@ -package arr;
-
-import java.util.Arrays;
-import java.util.Random;
-
-public class F {
- public static Random rng = new Random();
-
- public static void randomise(double probs[])
- {
- randomise(probs, true);
- }
-
- public static void randomise(double probs[], boolean normalise)
- {
- double z = 0;
- for (int i = 0; i < probs.length; ++i)
- {
- probs[i] = 10 + rng.nextDouble();
- if (normalise)
- z += probs[i];
- }
-
- if (normalise)
- for (int i = 0; i < probs.length; ++i)
- probs[i] /= z;
- }
-
- public static void uniform(double probs[])
- {
- for (int i = 0; i < probs.length; ++i)
- probs[i] = 1.0 / probs.length;
- }
-
- public static void l1normalize(double [] a){
- double sum=0;
- for(int i=0;i<a.length;i++){
- sum+=a[i];
- }
- if(sum==0)
- Arrays.fill(a, 1.0/a.length);
- else
- {
- 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[]){
- // FIXME: this isn't the l1 norm for a < 0
- double norm=0;
- for(int i=0;i<a.length;i++){
- norm += a[i];
- }
- 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;
- 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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