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Posted to user@mahout.apache.org by "Roshan A. Punnoose" <rp...@proteuseng.com> on 2009/12/22 02:01:21 UTC

Breiman example issues

Hi,

I am trying to run the Breiman decision tree at http://cwiki.apache.org/MAHOUT/breiman-example.html with the glass data, but I keep getting this error when I actually run the Breiman example:

Exception in thread "main" java.lang.IllegalArgumentException: labels.length != predictions.length
        at org.apache.mahout.df.ErrorEstimate.errorRate(ErrorEstimate.java:29)
        at org.apache.mahout.df.BreimanExample.runIteration(BreimanExample.java:108)
        at org.apache.mahout.df.BreimanExample.run(BreimanExample.java:214)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.apache.mahout.df.BreimanExample.main(BreimanExample.java:143)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:156)


I believe I’m at the latest trunk since a week ago.

Roshan

Re: Re : Breiman example issues

Posted by "Roshan A. Punnoose" <rp...@proteuseng.com>.

Thanks that worked.


On 12/22/09 4:12 AM, "deneche abdelhakim" <a_...@yahoo.fr> wrote:

> I (hopefully) fixed the problem, get the latest trunk and try again.

thanks
> again for the report

Deneche
--- En date de : Mar 22.12.09, deneche
> abdelhakim <a_...@yahoo.fr> a écrit :

> De: deneche abdelhakim
> <a_...@yahoo.fr>
> Objet: Re : Breiman example issues
> À:
> mahout-user@lucene.apache.org
> Date: Mardi 22 Décembre 2009, 6h51
> Hi
> Roshan,
> 
> just tried the example with the latest trunk and had the
> same
> problem. I'm investigating the problem right now. Thank
> you for reporting
> this issue
> 
> Deneche
> 
> --- En date de : Mar 22.12.09, Roshan A. Punnoose
> <rp...@proteuseng.com>
> a écrit :
> 
> > De: Roshan A. Punnoose
> <rp...@proteuseng.com>
> > Objet: Breiman example issues
> > À:
> "mahout-user@lucene.apache.org"
> <ma...@lucene.apache.org>
> > Date:
> Mardi 22 Décembre 2009, 2h01
> > Hi,
> > 
> > I am trying to run the Breiman
> decision tree at http://cwiki.apache.org/MAHOUT/breiman-example.html
> > with
> the glass data, but I keep getting this error
> when I
> > actually run the
> Breiman example:
> > 
> > Exception in thread "main"
> >
> java.lang.IllegalArgumentException: labels.length !=
> > predictions.length
>
> >         at
> >
>
> org.apache.mahout.df.ErrorEstimate.errorRate(ErrorEstimate.java:29)
> >      
>   at
> >
> 
> org.apache.mahout.df.BreimanExample.runIteration(BreimanExample.java:108)> >
>         at
> >
> 
> org.apache.mahout.df.BreimanExample.run(BreimanExample.java:214)
> >        
> at
> >
> org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
> >        
> at
> >
> org.apache.mahout.df.BreimanExample.main(BreimanExample.java:143)
> >
>         at
> > sun.reflect.NativeMethodAccessorImpl.invoke0(Native
> Method)
>
> >         at
> >
>
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)

> > >         at
> >
>
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.j
> ava:25)
> >         at
> > java.lang.reflect.Method.invoke(Method.java:597)
>
> >         at
> > org.apache.hadoop.util.RunJar.main(RunJar.java:156)
> > 
> >
> 
> > I believe I¹m at the latest trunk since a week ago.
> > 
> > Roshan
> >
> 
> 
> 
> 
>

Re : Breiman example issues

Posted by deneche abdelhakim <a_...@yahoo.fr>.

I (hopefully) fixed the problem, get the latest trunk and try again.

thanks again for the report

Deneche
--- En date de : Mar 22.12.09, deneche abdelhakim <a_...@yahoo.fr> a écrit :

> De: deneche abdelhakim <a_...@yahoo.fr>
> Objet: Re : Breiman example issues
> À: mahout-user@lucene.apache.org
> Date: Mardi 22 Décembre 2009, 6h51
> Hi Roshan,
> 
> just tried the example with the latest trunk and had the
> same problem. I'm investigating the problem right now. Thank
> you for reporting this issue
> 
> Deneche
> 
> --- En date de : Mar 22.12.09, Roshan A. Punnoose <rp...@proteuseng.com>
> a écrit :
> 
> > De: Roshan A. Punnoose <rp...@proteuseng.com>
> > Objet: Breiman example issues
> > À: "mahout-user@lucene.apache.org"
> <ma...@lucene.apache.org>
> > Date: Mardi 22 Décembre 2009, 2h01
> > Hi,
> > 
> > I am trying to run the Breiman decision tree at http://cwiki.apache.org/MAHOUT/breiman-example.html
> > with the glass data, but I keep getting this error
> when I
> > actually run the Breiman example:
> > 
> > Exception in thread "main"
> > java.lang.IllegalArgumentException: labels.length !=
> > predictions.length
> >         at
> >
> org.apache.mahout.df.ErrorEstimate.errorRate(ErrorEstimate.java:29)
> >         at
> >
> org.apache.mahout.df.BreimanExample.runIteration(BreimanExample.java:108)
> >         at
> >
> org.apache.mahout.df.BreimanExample.run(BreimanExample.java:214)
> >         at
> >
> org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
> >         at
> >
> org.apache.mahout.df.BreimanExample.main(BreimanExample.java:143)
> >         at
> > sun.reflect.NativeMethodAccessorImpl.invoke0(Native
> Method)
> >         at
> >
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> >         at
> >
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> >         at
> > java.lang.reflect.Method.invoke(Method.java:597)
> >         at
> > org.apache.hadoop.util.RunJar.main(RunJar.java:156)
> > 
> > 
> > I believe I’m at the latest trunk since a week ago.
> > 
> > Roshan
> > 
> 
> 
> 
>

Re : Breiman example issues

Posted by deneche abdelhakim <a_...@yahoo.fr>.

Hi Roshan,

just tried the example with the latest trunk and had the same problem. I'm investigating the problem right now. Thank you for reporting this issue

Deneche

--- En date de : Mar 22.12.09, Roshan A. Punnoose <rp...@proteuseng.com> a écrit :

> De: Roshan A. Punnoose <rp...@proteuseng.com>
> Objet: Breiman example issues
> À: "mahout-user@lucene.apache.org" <ma...@lucene.apache.org>
> Date: Mardi 22 Décembre 2009, 2h01
> Hi,
> 
> I am trying to run the Breiman decision tree at http://cwiki.apache.org/MAHOUT/breiman-example.html
> with the glass data, but I keep getting this error when I
> actually run the Breiman example:
> 
> Exception in thread "main"
> java.lang.IllegalArgumentException: labels.length !=
> predictions.length
>         at
> org.apache.mahout.df.ErrorEstimate.errorRate(ErrorEstimate.java:29)
>         at
> org.apache.mahout.df.BreimanExample.runIteration(BreimanExample.java:108)
>         at
> org.apache.mahout.df.BreimanExample.run(BreimanExample.java:214)
>         at
> org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
>         at
> org.apache.mahout.df.BreimanExample.main(BreimanExample.java:143)
>         at
> sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>         at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>         at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>         at
> java.lang.reflect.Method.invoke(Method.java:597)
>         at
> org.apache.hadoop.util.RunJar.main(RunJar.java:156)
> 
> 
> I believe I’m at the latest trunk since a week ago.
> 
> Roshan
>