[jira] [Commented] (HIVEMALL-171) Tracing functionality for prediction of DecisionTrees

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVEMALL-171?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16937598#comment-16937598 ] 

ASF GitHub Bot commented on HIVEMALL-171:
-----------------------------------------

myui commented on pull request #199: [WIP][HIVEMALL-171] Tracing functionality for prediction of DecisionTrees
URL: https://github.com/apache/incubator-hivemall/pull/199
 
 
   ## What changes were proposed in this pull request?
   
   Introduce `decision_path` UDF providing tracing of decision tree prediction paths
   
   ## What type of PR is it?
   
   Feature
   
   ## What is the Jira issue?
   
   https://issues.apache.org/jira/browse/HIVEMALL-171
   
   ## How was this patch tested?
   
   unit tests, manual tests on EMR
   
   ## How to use this feature?
   
   to be described in the user guide
   
   ## Checklist
   
   - [ ] Did you apply source code formatter, i.e., `./bin/format_code.sh`, for your commit?
   - [ ] Did you run system tests on Hive (or Spark)?
   
 
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> Tracing functionality for prediction of DecisionTrees
> -----------------------------------------------------
>
>                 Key: HIVEMALL-171
>                 URL: https://issues.apache.org/jira/browse/HIVEMALL-171
>             Project: Hivemall
>          Issue Type: Wish
>            Reporter: Makoto Yui
>            Assignee: Makoto Yui
>            Priority: Major
>             Fix For: 0.6.0
>
>         Attachments: iris_trace.png
>
>
> It would be useful if users can find why this label is predicted for RandomForest?
> So, add tracing functionality of visited Nodes in the DecisionTree prediction logic.



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