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