[GitHub] [incubator-hivemall] myui opened a new pull request #199: [WIP][HIVEMALL-171] Tracing functionality for prediction of DecisionTrees

[GitBox <gi...@apache.org>]

myui opened a new 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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