Author: srowen
Date: Tue May 5 11:43:05 2009
New Revision: 771673
URL: http://svn.apache.org/viewvc?rev=771673&view=rev
Log: (empty)
Modified:
lucene/mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/recommender/BooleanUserGenericUserBasedRecommender.java
Modified:
lucene/mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/recommender/BooleanUserGenericUserBasedRecommender.java
URL:
http://svn.apache.org/viewvc/lucene/mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/recommender/BooleanUserGenericUserBasedRecommender.java?rev=771673&r1=771672&r2=771673&view=diff
==============================================================================
---
lucene/mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/recommender/BooleanUserGenericUserBasedRecommender.java
(original)
+++
lucene/mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/recommender/BooleanUserGenericUserBasedRecommender.java
Tue May 5 11:43:05 2009
@@ -176,7 +176,6 @@
if (theNeighborhood.isEmpty()) {
return Double.NaN;
}
- double preference = 0.0;
double totalSimilarity = 0.0;
for (User user : theNeighborhood) {
if (!user.equals(theUser)) {
@@ -185,13 +184,12 @@
if (pref != null) {
double theSimilarity = similarity.userSimilarity(theUser, user) +
1.0;
if (!Double.isNaN(theSimilarity)) {
- preference += theSimilarity * pref.getValue();
totalSimilarity += theSimilarity;
}
}
}
}
- return totalSimilarity == 0.0 ? Double.NaN : preference / totalSimilarity;
+ return totalSimilarity == 0.0 ? Double.NaN : totalSimilarity;
}
private static Set<Object> getAllOtherItems(Iterable<User> theNeighborhood,
User theUser) {
