spark-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Jack Yang <j...@uow.edu.au>
Subject RE: error from DecisonTree Training:
Date Mon, 21 Jul 2014 23:41:02 GMT
That is nice.
Thanks Xiangrui.

-----Original Message-----
From: Xiangrui Meng [mailto:mengxr@gmail.com] 
Sent: Tuesday, 22 July 2014 9:31 AM
To: user@spark.apache.org
Subject: Re: error from DecisonTree Training:

This is a known issue:
https://issues.apache.org/jira/browse/SPARK-2197 . Joseph is working on it. -Xiangrui

On Mon, Jul 21, 2014 at 4:20 PM, Jack Yang <jiey@uow.edu.au> wrote:
> So this is a bug unsolved (for java) yet?
>
>
>
> From: Jack Yang [mailto:jiey@uow.edu.au]
> Sent: Friday, 18 July 2014 4:52 PM
> To: user@spark.apache.org
> Subject: error from DecisonTree Training:
>
>
>
> Hi All,
>
> I got an error while using DecisionTreeModel (my program is written in 
> Java, spark 1.0.1, scala 2.10.1).
>
> I have read a local file, loaded it as RDD, and then sent to 
> decisionTree for training. See below for details:
>
>
>
> JavaRDD<LabeledPoint> Points = lines.map(new ParsePoint()).cache();
>
> LogisticRegressionModel model =
> LogisticRegressionWithSGD.train(Points.rdd(),iterations, stepSize);   //
> until here it is working
>
> Strategy strategy = new Strategy( ….);
>
> DecisionTree decisionTree = new DecisionTree(strategy);
>
> DecisionTreeModel decisionTreeModel = 
> decisionTree.train(Points.rdd());
>
>
>
>
>
> The error is : java.lang.ClassCastException: [Ljava.lang.Object; 
> cannot be cast to [Lorg.apache.spark.mllib.regression.LabeledPoint;
>
>
>
> Any thoughts?
>
>
>
> Best regards,
>
> Jack
>
>
Mime
View raw message