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https://issues.apache.org/jira/browse/MAHOUT-511?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ted Dunning resolved MAHOUT-511.
--------------------------------

    Resolution: Fixed

Fixed and added test case to demonstrate the problem.

> TrainLogistic regressed due to encoder changes.
> -----------------------------------------------
>
>                 Key: MAHOUT-511
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-511
>             Project: Mahout
>          Issue Type: Bug
>            Reporter: Ted Dunning
>             Fix For: 0.4
>
>
> Isabel wrote:
> I just tried running the SGD example with the following command line (adapted
> from the corresponding JIRA issue):
> ./bin/mahout org.apache.mahout.classifier.sgd.TrainLogistic --passes 100 
> --rate
> 50 --lambda 0.001 --input examples/src/main/resources/donut.csv --features 21 
> --
> output donut.model --target color --categories 2 --predictors x y xx xy yy a 
> b c
> --types n n
> When running the code above I ran into a few NullPointerExceptions - I was 
> able
> to fix them with a few tiny changes. If not stripped they should be attached 
> to
> this mail to highlight the lines of code that caused the trouble. However I 
> was
> wondering whether I simply used the wrong command line.

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