spark-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Michael Armbrust (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (SPARK-7492) Convert LocalDataFrame to LocalMatrix
Date Mon, 03 Aug 2015 19:26:14 GMT

     [ https://issues.apache.org/jira/browse/SPARK-7492?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Michael Armbrust updated SPARK-7492:
------------------------------------
    Target Version/s: 1.6.0  (was: 1.5.0)

> Convert LocalDataFrame to LocalMatrix
> -------------------------------------
>
>                 Key: SPARK-7492
>                 URL: https://issues.apache.org/jira/browse/SPARK-7492
>             Project: Spark
>          Issue Type: New Feature
>          Components: MLlib, SQL
>            Reporter: Burak Yavuz
>
> Having a method like, 
> {code:java}
> Matrices.fromDataFrame(df)
> {code}
> would provide users the ability to perform feature selection with DataFrames.
> Users will be able to chain operations like below:
> {code:java}
> import org.apache.spark.mllib.linalg.Matrices
> import org.apache.spark.mllib.stat.Statistics
> import org.apache.spark.sql.DataFrame
> val df = ... // the DataFrame
> val contingencyTable = df.stat.crosstab(col1, col2)
> val ct = Matrices.fromDataFrame(contingencyTable)
> val result: ChiSqTestResult = Statistics.chiSqTest(ct)
> {code}



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org


Mime
View raw message