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

2014-10-14 Thread Sandy Ryza (JIRA) 

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https://issues.apache.org/jira/browse/SPARK-3360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=14171238#comment-14171238
 ] 

Sandy Ryza commented on SPARK-3360:
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bq. You don't need Vector.multiply(RowMatrix) really since it is either the 
same as RowMatrix.multiply(Vector) or the same with the RowMatrix transposed.

Any reason not to offer it for convenience though?

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

2014-09-07 Thread Yu Ishikawa (JIRA) 

[ 
https://issues.apache.org/jira/browse/SPARK-3360?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanelfocusedCommentId=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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