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
