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