From c7c274a7d4b0510c5cd7424704197de4aa6acde5 Mon Sep 17 00:00:00 2001
From: "trevor.cohn" <trevor.cohn@ec762483-ff6d-05da-a07a-a48fb63a330f>
Date: Tue, 13 Jul 2010 19:36:52 +0000
Subject: Changed initialisation

git-svn-id: https://ws10smt.googlecode.com/svn/trunk@238 ec762483-ff6d-05da-a07a-a48fb63a330f
---
 gi/posterior-regularisation/prjava/src/arr/F.java                | 8 +++++++-
 gi/posterior-regularisation/prjava/src/phrase/PhraseCluster.java | 2 ++
 2 files changed, 9 insertions(+), 1 deletion(-)

(limited to 'gi/posterior-regularisation')

diff --git a/gi/posterior-regularisation/prjava/src/arr/F.java b/gi/posterior-regularisation/prjava/src/arr/F.java
index 79de5d1a..2201179e 100644
--- a/gi/posterior-regularisation/prjava/src/arr/F.java
+++ b/gi/posterior-regularisation/prjava/src/arr/F.java
@@ -15,7 +15,7 @@ public class F {
 		double z = 0;
 		for (int i = 0; i < probs.length; ++i)
 		{
-			probs[i] = 3 + rng.nextDouble();
+			probs[i] = 1e2 + rng.nextDouble();
 			if (normalise)
 				z += probs[i];
 		}
@@ -25,6 +25,12 @@ public class F {
 				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++){
diff --git a/gi/posterior-regularisation/prjava/src/phrase/PhraseCluster.java b/gi/posterior-regularisation/prjava/src/phrase/PhraseCluster.java
index 68148248..1f73764e 100644
--- a/gi/posterior-regularisation/prjava/src/phrase/PhraseCluster.java
+++ b/gi/posterior-regularisation/prjava/src/phrase/PhraseCluster.java
@@ -42,6 +42,7 @@ public class PhraseCluster {
 		for(double [][]i:emit)
 			for(double []j:i)
 				arr.F.randomise(j, true);
+
 		for(double []j:pi)
 			arr.F.randomise(j, true);
 	}
@@ -188,6 +189,7 @@ public class PhraseCluster {
 	private double KL_symmetric_dirichlet(double[] q, double alpha)
 	{
 		// assumes that zeros in q are structural & should be skipped
+		// FIXME: asssumption doesn't hold
 		
 		double p0 = alpha;
 		double q0 = 0;
-- 
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