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Posted to dev@mahout.apache.org by "Sebastian Schelter (JIRA)" <ji...@apache.org> on 2013/01/18 08:56:24 UTC
[jira] [Resolved] (MAHOUT-1062) alphaI is not correctly saved in
NaiveBayesModel
[ https://issues.apache.org/jira/browse/MAHOUT-1062?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sebastian Schelter resolved MAHOUT-1062.
----------------------------------------
Resolution: Fixed
Fix Version/s: 0.8
Assignee: Sebastian Schelter
> alphaI is not correctly saved in NaiveBayesModel
> ------------------------------------------------
>
> Key: MAHOUT-1062
> URL: https://issues.apache.org/jira/browse/MAHOUT-1062
> Project: Mahout
> Issue Type: Bug
> Components: Classification
> Affects Versions: 0.7
> Reporter: David Engel
> Assignee: Sebastian Schelter
> Fix For: 0.8
>
>
> alphaI is passed in for training via the thetaSummer job configuration. When the model is saved, however, the wrong configuration is used causing the saved alphaI to always be 1.0. The following patch fixes the problem for me.
> diff -ur mahout-distribution-0.7.orig/core/src/main/java/org/apache/mahout/classifier/naivebayes/training/TrainNaiveBayesJob.java mahout-distribution-0.7/core/src/main/java/org/apache/mahout/classifier/naivebayes/training/TrainNaiveBayesJob.java
> --- mahout-distribution-0.7.orig/core/src/main/java/org/apache/mahout/classifier/naivebayes/training/TrainNaiveBayesJob.java 2012-06-12 03:32:17.000000000 -0500
> +++ mahout-distribution-0.7/core/src/main/java/org/apache/mahout/classifier/naivebayes/training/TrainNaiveBayesJob.java 2012-08-28 13:06:11.000000000 -0500
> @@ -134,7 +134,7 @@
> }*/
>
> //validate our model and then write it out to the official output
> - NaiveBayesModel naiveBayesModel = BayesUtils.readModelFromDir(getTempPath(), getConf());
> + NaiveBayesModel naiveBayesModel = BayesUtils.readModelFromDir(getTempPath(), thetaSummer.getConfiguration());
> naiveBayesModel.validate();
> naiveBayesModel.serialize(getOutputPath(), getConf());
>
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