[jira] [Commented] (SPARK-3360) Add RowMatrix.multiply(Vector)

["Yu Ishikawa (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-3360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14125129#comment-14125129 ] 

Yu Ishikawa commented on SPARK-3360:
------------------------------------

Hi Sandy,

I'm interested in this issue.
It seems that it is not difficult to implement the matrix operation to multiply a RowMatrix and a Vector. What do you think about the operation to multiply a Vector and a RowMatrix? I mean, `Vector.multiply(RowMatrix)`.

By the way, we are discussing about the matrix manipulation for large data set in the issue. Just information.
https://issues.apache.org/jira/browse/SPARK-3416

thanks,

> Add RowMatrix.multiply(Vector)
> ------------------------------
>
>                 Key: SPARK-3360
>                 URL: https://issues.apache.org/jira/browse/SPARK-3360
>             Project: Spark
>          Issue Type: Improvement
>          Components: MLlib
>            Reporter: Sandy Ryza
>
> RowMatrix currently has multiply(Matrix), but multiply(Vector) would be useful as well.



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