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https://issues.apache.org/jira/browse/MAHOUT-954?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13399364#comment-13399364
]
Hudson commented on MAHOUT-954:
-------------------------------
Integrated in Mahout-Quality #1556 (See
[https://builds.apache.org/job/Mahout-Quality/1556/])
MAHOUT-954 "Unpredictable" have to be represented by NaN on DF. (Revision
1352836)
Result = SUCCESS
srowen : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1352836
Files :
*
/mahout/trunk/core/src/main/java/org/apache/mahout/classifier/RegressionResultAnalyzer.java
*
/mahout/trunk/core/src/main/java/org/apache/mahout/classifier/df/DecisionForest.java
*
/mahout/trunk/core/src/main/java/org/apache/mahout/classifier/df/builder/DecisionTreeBuilder.java
*
/mahout/trunk/core/src/main/java/org/apache/mahout/classifier/df/data/Dataset.java
*
/mahout/trunk/core/src/main/java/org/apache/mahout/classifier/df/node/CategoricalNode.java
*
/mahout/trunk/core/src/test/java/org/apache/mahout/classifier/RegressionResultAnalyzerTest.java
*
/mahout/trunk/core/src/test/java/org/apache/mahout/classifier/df/DecisionForestTest.java
*
/mahout/trunk/core/src/test/java/org/apache/mahout/classifier/df/mapreduce/partial/Step1MapperTest.java
*
/mahout/trunk/examples/src/main/java/org/apache/mahout/classifier/df/BreimanExample.java
> "Unpredictable" have to be represented by NaN on DF.
> ----------------------------------------------------
>
> Key: MAHOUT-954
> URL: https://issues.apache.org/jira/browse/MAHOUT-954
> Project: Mahout
> Issue Type: Bug
> Components: Classification
> Reporter: Ikumasa Mukai
> Assignee: Sean Owen
> Labels: DecisionForest, Regression
> Fix For: 0.8
>
> Attachments: MAHOUT-954.patch
>
>
> On our RandomForest src, we uses "-1" for representing "Unpredictable",
> but for regression problem, there is a case which outputs "-1" for the
> correct result.
> For resolving this problem, we should change the unpredictable flag to "NaN"
> from "-1".
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