From 30bbb07a467490007ba6959c9734578ba0dbe24b Mon Sep 17 00:00:00 2001
From: desaicwtf <desaicwtf@ec762483-ff6d-05da-a07a-a48fb63a330f>
Date: Mon, 5 Jul 2010 15:26:42 +0000
Subject: forget to add files

git-svn-id: https://ws10smt.googlecode.com/svn/trunk@126 ec762483-ff6d-05da-a07a-a48fb63a330f
---
 gi/posterior-regularisation/prjava/src/arr/F.java | 70 +++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 gi/posterior-regularisation/prjava/src/arr/F.java

(limited to 'gi/posterior-regularisation/prjava/src/arr/F.java')

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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