Author: tdunning
Date: Fri Sep 17 19:51:44 2010
New Revision: 998287
URL: http://svn.apache.org/viewvc?rev=998287&view=rev
Log:
Made OnlineAuc more pessimistic
Modified:
mahout/trunk/core/src/main/java/org/apache/mahout/math/stats/OnlineAuc.java
Modified:
mahout/trunk/core/src/main/java/org/apache/mahout/math/stats/OnlineAuc.java
URL:
http://svn.apache.org/viewvc/mahout/trunk/core/src/main/java/org/apache/mahout/math/stats/OnlineAuc.java?rev=998287&r1=998286&r2=998287&view=diff
==============================================================================
--- mahout/trunk/core/src/main/java/org/apache/mahout/math/stats/OnlineAuc.java
(original)
+++ mahout/trunk/core/src/main/java/org/apache/mahout/math/stats/OnlineAuc.java
Fri Sep 17 19:51:44 2010
@@ -38,7 +38,7 @@ public class OnlineAuc {
FIFO, FAIR, RANDOM
}
- public static final int HISTORY = 10;
+ public static final int HISTORY = 100;
private ReplacementPolicy policy = ReplacementPolicy.FAIR;
private transient Random random =
org.apache.mahout.common.RandomUtils.getRandom();
@@ -90,7 +90,7 @@ public class OnlineAuc {
break;
}
count++;
- double z = 0.5;
+ double z = 0;
if (score > v) {
z = 1.0;
} else if (score < v) {
