[jira] Updated: (MAHOUT-271) Make WikipediaDatasetCreatorMapper fuzzy category match respect word boundaries

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

     [ https://issues.apache.org/jira/browse/MAHOUT-271?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Owen updated MAHOUT-271:
-----------------------------

        Status: Resolved  (was: Patch Available)
    Resolution: Fixed

Resolved with a version of your patch Joe. I thought it might be wasteful to compile the regexes in every map() so pre-computed them in setup(). (And rearranged the code somewhat.)

> Make WikipediaDatasetCreatorMapper fuzzy category match respect word boundaries
> -------------------------------------------------------------------------------
>
>                 Key: MAHOUT-271
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-271
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Classification
>    Affects Versions: 0.2
>            Reporter: Olivier Grisel
>            Assignee: Olivier Grisel
>            Priority: Trivial
>             Fix For: 0.4
>
>         Attachments: MAHOUT-271.patch
>
>
> WikipediaDatasetCreatorDriver is useful to create categorisation corpora out of wikipedia, however the category match just do a String#contains check which can catch a lot of unrelated categories.
> Checking the word boundaries with a regexp such as String.format("\\b%s\\b", theCategoryNameIAmLookingFor); should fix the  issue.

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