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From Sam Hodgson <hodgson_...@hotmail.com>
Subject RE: cmdump
Date Wed, 01 Aug 2012 13:29:38 GMT

Unfortunately I dont know any Java as yet, im using PHP so going to have to pipe the output
to file and extract what I need from that.  Messy but it should work for what I need.
Thanks for your input! :)

> Date: Mon, 30 Jul 2012 20:03:12 -0700
> Subject: Re: cmdump
> From: goksron@gmail.com
> To: user@mahout.apache.org
> 
> In TestNaiveBayesDriver around line 115 is where it reads the output
> of the Naive Bayes job and makes a confusion matrix. It is probably
> better to make cmdump read that file instead of expecting all of the
> classifier programs to make a separate kind of file.
> 
> On Mon, Jul 30, 2012 at 3:34 PM, Sam Hodgson <hodgson_sam@hotmail.com> wrote:
> >
> > Thanks Lance, i'll try rolling back a few versions to see if i can get an output.
> >
> > The output directory from the classifier holds the following:
> >
> > -rwxrwxrwx  1 root root  84K Jul 26 20:11 part-m-00000
> > -rw-r--r--  1 root root  676 Jul 26 20:11 .part-m-00000.crc
> > -rwxrwxrwx  1 root root    0 Jul 26 20:11 _SUCCESS
> > -rw-r--r--  1 root root    8 Jul 26 20:11 ._SUCCESS.crc
> >
> > Cheers
> >
> > Sam
> >
> >> Date: Mon, 30 Jul 2012 14:28:37 -0700
> >> Subject: Re: FW: cmdump
> >> From: goksron@gmail.com
> >> To: user@mahout.apache.org
> >>
> >> I don't know what the output directory holds.
> >>
> >> There used to be code in TestNaiveBayesClassifier that saved the
> >> confusion matrix to a separate file. This code has evaporated.
> >>
> >> On Sun, Jul 29, 2012 at 3:17 PM, Sam Hodgson <hodgson_sam@hotmail.com>
wrote:
> >> >
> >> > Hi,
> >> >
> >> > Sorry to repost this but im completely stuck and I cant find anything on
this anywhere.
> >> >
> >> > I've tried running this on the known good 20-newsgroup example output data
and also on version 0.7 and get the same error.
> >> >
> >> > Any suggestions at all would be appreciated.
> >> >
> >> > Thanks
> >> >
> >> > Sam
> >> >
> >> > From: hodgson_sam@hotmail.com
> >> > To: user@mahout.apache.org
> >> > Subject: cmdump
> >> > Date: Thu, 26 Jul 2012 23:20:39 +0000
> >> >
> >> >
> >> >
> >> >
> >> >
> >> > Hi,
> >> >
> >> > Im having some trouble getting a text output from the confusion matrix
created by testnb.  Im running cmdump over part-m-00000 that was output by test but getting
the following error:
> >> >
> >> > bin/mahout cmdump -i spamfilter/test/part-m-00000 -o spamfilter/matrix/
-ow --text
> >> > Running on hadoop, using /usr/bin/hadoop and HADOOP_CONF_DIR=
> >> > MAHOUT-JOB: /root/svn/trunk/examples/target/mahout-examples-0.8-SNAPSHOT-job.jar
> >> > 12/07/27 00:10:10 WARN driver.MahoutDriver: No cmdump.props found on classpath,
will use command-line arguments only
> >> > 12/07/27 00:10:10 INFO common.AbstractJob: Command line arguments: {--endPhase=[2147483647],
--input=[spamfilter/test/part-m-00000], --output=[spamfilter/matrix/], --overwrite=null, --startPhase=[0],
--tempDir=[temp], --text=null}
> >> > Exception in thread "main" java.io.IOException: wrong value class: org.apache.mahout.math.MatrixWritable@6833f0de
is not class org.apache.mahout.math.VectorWritable
> >> >     at org.apache.hadoop.io.SequenceFile$Reader.next(SequenceFile.java:1945)
> >> >     at org.apache.mahout.classifier.ConfusionMatrixDumper.readSeqFile(ConfusionMatrixDumper.java:230)
> >> >     at org.apache.mahout.classifier.ConfusionMatrixDumper.exportText(ConfusionMatrixDumper.java:169)
> >> >     at org.apache.mahout.classifier.ConfusionMatrixDumper.run(ConfusionMatrixDumper.java:155)
> >> >     at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
> >> >     at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
> >> >     at org.apache.mahout.classifier.ConfusionMatrixDumper.main(ConfusionMatrixDumper.java:134)
> >> >     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> >> >     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> >> >     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> >> >     at java.lang.reflect.Method.invoke(Method.java:597)
> >> >     at org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68)
> >> >     at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139)
> >> >     at org.apache.mahout.driver.MahoutDriver.main(MahoutDriver.java:195)
> >> >     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:197)
> >> >
> >> >
> >> > Any help would be greatly appreciated!
> >> >
> >> > Cheers
> >> >
> >> > Sam
> >> >
> >>
> >>
> >>
> >> --
> >> Lance Norskog
> >> goksron@gmail.com
> >
> 
> 
> 
> -- 
> Lance Norskog
> goksron@gmail.com
 		 	   		  
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