[jira] [Resolved] (MAHOUT-674) Let the TrainLogistic class could print the category feature weight probably

["Sean Owen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAHOUT-674?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Owen resolved MAHOUT-674.
------------------------------

    Resolution: Fixed
      Assignee: Sean Owen

Looks like a pretty clear oversight -- the value is definitely intended to be a map key and this patch makes it so. Committed.

> Let the TrainLogistic class could print the category feature weight probably
> ----------------------------------------------------------------------------
>
>                 Key: MAHOUT-674
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-674
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Examples
>    Affects Versions: 0.4, 0.5
>         Environment: Mac OS X 10.6.7
>            Reporter: Stanley Xu
>            Assignee: Sean Owen
>            Priority: Trivial
>              Labels: patch
>             Fix For: 0.5
>
>         Attachments: trainlogsiticexample.diff
>
>   Original Estimate: 5m
>  Remaining Estimate: 5m
>
> In the example of trainlogistic, if we add a category feature. It will throw a NullPointerException while printing out the model.
> The root cause is for category feature, the code try to use the feature name as the predictor rather than feature=value as the predictor while get the weight from the trained LR model.

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