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Posted to commits@lucene.apache.org by rm...@apache.org on 2011/08/11 04:18:22 UTC

svn commit: r1156443 - /lucene/dev/branches/flexscoring/lucene/src/test/org/apache/lucene/search/similarities/BasicModelIF.java

Author: rmuir
Date: Thu Aug 11 02:18:21 2011
New Revision: 1156443

URL: http://svn.apache.org/viewvc?rev=1156443&view=rev
Log:
LUCENE-3357: prevent IF from going negative

Modified:
    lucene/dev/branches/flexscoring/lucene/src/test/org/apache/lucene/search/similarities/BasicModelIF.java

Modified: lucene/dev/branches/flexscoring/lucene/src/test/org/apache/lucene/search/similarities/BasicModelIF.java
URL: http://svn.apache.org/viewvc/lucene/dev/branches/flexscoring/lucene/src/test/org/apache/lucene/search/similarities/BasicModelIF.java?rev=1156443&r1=1156442&r2=1156443&view=diff
==============================================================================
--- lucene/dev/branches/flexscoring/lucene/src/test/org/apache/lucene/search/similarities/BasicModelIF.java (original)
+++ lucene/dev/branches/flexscoring/lucene/src/test/org/apache/lucene/search/similarities/BasicModelIF.java Thu Aug 11 02:18:21 2011
@@ -28,7 +28,7 @@ public class BasicModelIF extends BasicM
   public final float score(EasyStats stats, float tfn) {
     int N = stats.getNumberOfDocuments();
     long F = stats.getTotalTermFreq();
-    return tfn * (float)(log2((N + 1) / (F + 0.5)));
+    return tfn * (float)(log2(1 + (N + 1) / (F + 0.5)));
   }
 
   @Override