[jira] [Commented] (HIVEMALL-285) Explain default hyperparameters for each optimizer

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

    [ https://issues.apache.org/jira/browse/HIVEMALL-285?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16983224#comment-16983224 ] 

ASF GitHub Bot commented on HIVEMALL-285:
-----------------------------------------

myui commented on pull request #220: [HIVEMALL-285] Add -inspect_opts option to show hyperparameters
URL: https://github.com/apache/incubator-hivemall/pull/220
 
 
   ## What changes were proposed in this pull request?
   
   Add `-inspect_opts` option to show hyperparameters
   
   ## What type of PR is it?
   
   Improvement
   
   ## What is the Jira issue?
   
   https://issues.apache.org/jira/browse/HIVEMALL-285
   
   ## How was this patch tested?
   
   manual tests on EMR
   
   ## How to use this feature?
   
   ```sql
   select train_regressor(array(), 0, '-inspect_opts -optimizer adam -reg elasticnet');
   
   FAILED: UDFArgumentException Inspected Optimizer options ...
   {disable_cvtest=false, regularization=ElasticNet, loss_function=SquaredLoss, eps=1.0E-8, decay=0.0, iterations=10, eta0=0.1, l1_ratio=0.5, lambda=1.0E-4, eta=Invscaling, optimizer=adam, beta1=0.9, beta2=0.999, alpha=1.0, cv_rate=0.005, power_t=0.1}
   ```
   
   ## Checklist
   
   - [x] Did you apply source code formatter, i.e., `./bin/format_code.sh`, for your commit?
   - [x] Did you run system tests on Hive (or Spark)?
   
 
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> Explain default hyperparameters for each optimizer
> --------------------------------------------------
>
>                 Key: HIVEMALL-285
>                 URL: https://issues.apache.org/jira/browse/HIVEMALL-285
>             Project: Hivemall
>          Issue Type: Sub-task
>            Reporter: Makoto Yui
>            Assignee: Makoto Yui
>            Priority: Minor
>
> Explain default hyperparameters for each optimizer.



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