[jira] [Commented] (SYSTEMML-608) StepLinregDS algorithm output file issues

["Faraz Makari Manshadi (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SYSTEMML-608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15248248#comment-15248248 ] 

Faraz Makari Manshadi commented on SYSTEMML-608:
------------------------------------------------

Regarding issue 1: StepLinRegDS writes the model parameters (if requested) only in the last run once the best set of features (based on AIC) is determined, i.e., the model parameters will be written for all the selected features at once and not for individual calls to linear regression.
Regarding issue 2: a fix has been delivered. The output format is also specified inside the function call. 

> StepLinregDS algorithm output file issues
> -----------------------------------------
>
>                 Key: SYSTEMML-608
>                 URL: https://issues.apache.org/jira/browse/SYSTEMML-608
>             Project: SystemML
>          Issue Type: Bug
>          Components: Algorithms
>            Reporter: Matthias Boehm
>
> The StepLinregDS has a couple of script level issues: (1) currently we write the model (if requested) for each individual call of linear regression (which is unnecessary and potentially leads to concurrent write conflicts), and (2) the output format parameter is not properly configured.



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