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Posted to java-commits@lucene.apache.org by rm...@apache.org on 2010/02/28 10:18:25 UTC
svn commit: r917148 - in /lucene/java/trunk: CHANGES.txt
src/java/org/apache/lucene/search/DefaultSimilarity.java
Author: rmuir
Date: Sun Feb 28 09:18:18 2010
New Revision: 917148
URL: http://svn.apache.org/viewvc?rev=917148&view=rev
Log:
LUCENE-2286: enable DefaultSimilarity.setDiscountOverlaps by default
Modified:
lucene/java/trunk/CHANGES.txt
lucene/java/trunk/src/java/org/apache/lucene/search/DefaultSimilarity.java
Modified: lucene/java/trunk/CHANGES.txt
URL: http://svn.apache.org/viewvc/lucene/java/trunk/CHANGES.txt?rev=917148&r1=917147&r2=917148&view=diff
==============================================================================
--- lucene/java/trunk/CHANGES.txt (original)
+++ lucene/java/trunk/CHANGES.txt Sun Feb 28 09:18:18 2010
@@ -22,6 +22,10 @@
* LUCENE-2190: Removed deprecated customScore() and customExplain()
methods from experimental CustomScoreQuery. (Uwe Schindler)
+
+* LUCENE-2286: Enabled DefaultSimilarity.setDiscountOverlaps by default.
+ This means that terms with a position increment gap of zero do not
+ affect the norms calculation by default. (Robert Muir)
Changes in runtime behavior
Modified: lucene/java/trunk/src/java/org/apache/lucene/search/DefaultSimilarity.java
URL: http://svn.apache.org/viewvc/lucene/java/trunk/src/java/org/apache/lucene/search/DefaultSimilarity.java?rev=917148&r1=917147&r2=917148&view=diff
==============================================================================
--- lucene/java/trunk/src/java/org/apache/lucene/search/DefaultSimilarity.java (original)
+++ lucene/java/trunk/src/java/org/apache/lucene/search/DefaultSimilarity.java Sun Feb 28 09:18:18 2010
@@ -76,13 +76,13 @@
return overlap / (float)maxOverlap;
}
- // Default false
- protected boolean discountOverlaps;
+ // Default true
+ protected boolean discountOverlaps = true;
/** Determines whether overlap tokens (Tokens with
* 0 position increment) are ignored when computing
- * norm. By default this is false, meaning overlap
- * tokens are counted just like non-overlap tokens.
+ * norm. By default this is true, meaning overlap
+ * tokens do not count when computing norms.
*
* @lucene.experimental
*