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https://issues.apache.org/jira/browse/MAHOUT-1378?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13848593#comment-13848593
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sam wu commented on MAHOUT-1378:
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you are right, old test didn't detect the problem, I just attach the new
test java file to JIRA
> Running Random Forest with Ignored features fails when loading feature
> descriptor from JSON file
> ------------------------------------------------------------------------------------------------
>
> Key: MAHOUT-1378
> URL: https://issues.apache.org/jira/browse/MAHOUT-1378
> Project: Mahout
> Issue Type: Bug
> Components: Classification
> Affects Versions: 0.8
> Environment: generic
> Reporter: sam wu
> Fix For: 0.9
>
> Attachments: DatasetIgnoreFeatureTest.java, rf-ignore-f-JSON.patch
>
> Original Estimate: 672h
> Remaining Estimate: 672h
>
> Running Random Forest with Ignored features fails when loading feature
> descriptor from JSON file.
> in Dataset.java , fromJSON(String json) function
> line 400
> original: ------ nominalValues[i] = array;
> should be change to
> nominalValues[i - ignored.size()] = array;
> // put array in ignore-feature filtered index
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