ArffFileStream problem with EvaluateInterleavedTestThenTrain task

[mlu...@gmail.com]

Hi:

I am trying to do an EvaluateInterleavedTestThenTrain task using the airlines sample dataset and I do not understand why the following command fails:

java -cp moa.jar -javaagent:sizeofag.jar moa.DoTask "EvaluateInterleavedTestThenTrain -s (ArffFileStream -f airlines.arff)"

{M}assive {O}nline {A}nalysis
Version: 14.11 November 2014
Copyright: (C) 2007-2014 University of Waikato, Hamilton, New Zealand
Web: http://moa.cms.waikato.ac.nz/

                                                                              
Task failed. Reason:
java.lang.IllegalArgumentException: Problems with option: stream
    at moa.options.ClassOption.setValueViaCLIString(ClassOption.java:69)
    at moa.tasks.EvaluateInterleavedTestThenTrain.doMainTask(EvaluateInterleavedTestThenTrain.java:103)
    at moa.tasks.MainTask.doTaskImpl(MainTask.java:50)
    at moa.tasks.AbstractTask.doTask(AbstractTask.java:57)
    at moa.tasks.TaskThread.run(TaskThread.java:76)
Caused by: java.lang.Exception: Problem with options to 'ArffFileStream'.

Valid options for ArffFileStream:
-f arffFile
ARFF file to load.
-c classIndex (default: -1)
Class index of data. 0 for none or -1 for last attribute in file.

    at moa.options.ClassOption.cliStringToObject(ClassOption.java:156)
    at moa.options.ClassOption.setValueViaCLIString(ClassOption.java:67)
    ... 4 more
Caused by: java.lang.IllegalArgumentException: Unknown option: -i
    at moa.options.Options.setViaCLIString(Options.java:149)
    at moa.options.ClassOption.cliStringToObject(ClassOption.java:154)
    ... 5 more

Can anyone help me?

Thanks in advance,

Luis

[band...@gmail.com]

I had the same issue too

Sent from my iPhone

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[Albert Bifet]

Thanks! It seems that this issue appears on Moa 14.11. We will fix this for the next release.

Meanwhile, please use

EvaluatePrequential -e BasicClassificationPerformanceEvaluator

that is equivalent to EvaluateInterleavedTestThenTrain.

Cheers, Albert