"Not found class moa.DoTask" problem while using weka classifiers

[Zara Rezaie]

Hi all,

I tried to use weka classifiers in moa through the command line, but got this error.

java -Xmx1G -cp moa.jar:weka.jar -javaagent:sizeofag.jar moa.DoTask "LearnModel \ -l (WekaClassifier -l weka.classifiers.trees.J48) \ -s generators.WaveformGenerator -m 1000000 -O model1.moa"

Error: Could not find or load main class moa.DoTask

So what's wrong in the command. I copied it from the moa manual.PDF.  

Using moa-2014.11 and weka-3-8-0-x64

Thanks in advance

Zara Rezaie

[Albert Bifet]

Do you have moa.jar and weka.jar in the directory where you're running
the command?

Cheers, Albert

> --
> You received this message because you are subscribed to the Google Groups
> "MOA users" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to moa-users+...@googlegroups.com.
> For more options, visit https://groups.google.com/d/optout.

[Zahra Rezaie]

Yes. I copied weka in the folder where moa was there. I have no problem while using moa on its own, but when I wanna run weka classifiers through moa commands I got that error.

> email to moa-users+unsubscribe@googlegroups.com.

> For more options, visit https://groups.google.com/d/optout.

--
You received this message because you are subscribed to a topic in the Google Groups "MOA users" group.
To unsubscribe from this topic, visit https://groups.google.com/d/topic/moa-users/YrUfNmZHups/unsubscribe.
To unsubscribe from this group and all its topics, send an email to moa-users+unsubscribe@googlegroups.com.

[Albert Bifet]

Do you have moa.jar in the folder?

Cheers, Albert

>> > email to moa-users+...@googlegroups.com.

>> > For more options, visit https://groups.google.com/d/optout.
>>
>> --
>> You received this message because you are subscribed to a topic in the
>> Google Groups "MOA users" group.
>> To unsubscribe from this topic, visit
>> https://groups.google.com/d/topic/moa-users/YrUfNmZHups/unsubscribe.
>> To unsubscribe from this group and all its topics, send an email to

>> moa-users+...@googlegroups.com.

>> For more options, visit https://groups.google.com/d/optout.
>
> --

> You received this message because you are subscribed to the Google Groups
> "MOA users" group.
> To unsubscribe from this group and stop receiving emails from it, send an

> email to moa-users+...@googlegroups.com.

[Zara Rezaie]

Oh, I just checked it and turns out I had weka.exe in the folder.  I replaced it with weka.jar (found it in moa2016.04/lib), but I got the same error. this weka version is weka-dev-3.7.12.jar (needless to say but I renamed it to just weka.jar.  

[Albert Bifet]

And do you have moa.jar in the folder?

Cheers, Albert

[Zara Rezaie]

Yes, I have these three jar files all in one folder:

moa.jar

sizeofag.jar

weka.jar

[Zara Rezaie]

I' like to add that now I'm using: moa-2014.11 and  weka-dev-3.7.12.jar. Isn't there something about incompatibility?

[Albert Bifet]

Are you using Windows? If you're using Windows you need to use -cp moa.jar;weka.jar instead of -cp moa.jar:weka.jar.

Cheers, Albert

[Zara Rezaie]

I used -cp moa.jar;weka.jar but I got this error: 

java.lang.Exception: Problem with options to 'LearnModel'.

Thanks

[Albert Bifet]

Use java -Xmx1G -cp moa.jar;weka.jar -javaagent:sizeofag.jar moa.DoTask "LearnModel  -l (WekaClassifier -l weka.classifiers.trees.J48) -s generators.WaveformGenerator -m 1000000 -O model1.moa"

Cheers, Albert

To unsubscribe from this group and stop receiving emails from it, send an email to moa-users+unsubscribe@googlegroups.com.

[Zara Rezaie]

That's exactly what I used before and got that  error. I tested copied and ran your command again but the same error occurred.

java.lang.Exception: Problem with options to 'LearnModel'.

        at moa.options.ClassOption.cliStringToObject(ClassOption.java:156)

        at moa.DoTask.main(DoTask.java:130)

Caused by: java.lang.IllegalArgumentException: Problems with option: learner

        at moa.options.ClassOption.setValueViaCLIString(ClassOption.java:69)

        at moa.options.Options.setViaCLIString(Options.java:145)

        at moa.options.ClassOption.cliStringToObject(ClassOption.java:154)

        ... 1 more

Caused by: java.lang.Exception: Class not found: WekaClassifier

        at moa.options.ClassOption.cliStringToObject(ClassOption.java:128)

        at moa.options.ClassOption.setValueViaCLIString(ClassOption.java:67)

        ... 3 more

[Albert Bifet]

Caused by: java.lang.Exception: Class not found: WekaClassifier

It seems that now the problem is in using WekaClassifier. Try with meta.WEKAClassifer.

Cheers, Albert

To unsubscribe from this group and stop receiving emails from it, send an email to moa-users+unsubscribe@googlegroups.com.

[Zara Rezaie]

Due to your suggestion I used this command, but got the same error with the options to 'LearnModel'

java -Xmx1G -cp moa.jar;weka.jar -javaagent:sizeofag.jar moa.DoTask "LearnModel -l (meta.WEKAClassifer -l weka.classifiers.trees.J48) -s generators.WaveformGenerator -m 100000 -O model1.moa"

errors: 

Problems with option: learner

Class not found: meta.WEKAClassifer

[muthu veerappan alagappan]

I have the same issue with WEKA 3.8.0 and MOA 2016.04, Please update us how to use

[muthu veerappan alagappan]

I am sorry, I found the error now, "meta.WEKAClassifer" instead of "meta.WEKAClassifier"

It works fine, though there was another jar bounce.jar required in the classpath after adding it worked

Thanks

[Zara Rezaie]

You're right! Thanks.

Now I got another problem which I copied it below. What is bounce.jar? From where can I download it and in which directory should I put it then?

Task failed. Reason:

java.lang.NoClassDefFoundError: org/pentaho/packageManagement/PackageManager

        at weka.core.WekaPackageManager.<clinit>(WekaPackageManager.java:80)

        at weka.core.Utils.readProperties(Utils.java:141)

        at weka.core.Capabilities.<init>(Capabilities.java:261)

        at weka.classifiers.trees.j48.ClassifierTree.getCapabilities(ClassifierT

ree.java:113)

        at weka.classifiers.trees.j48.C45PruneableClassifierTree.getCapabilities

(C45PruneableClassifierTree.java:92)

        at weka.classifiers.trees.j48.C45PruneableClassifierTree.buildClassifier

(C45PruneableClassifierTree.java:120)

        at weka.classifiers.trees.J48.buildClassifier(J48.java:293)

        at moa.classifiers.meta.WEKAClassifier.buildClassifier(WEKAClassifier.ja

va:152)

        at moa.classifiers.meta.WEKAClassifier.trainOnInstanceImpl(WEKAClassifie

r.java:109)

        at moa.classifiers.AbstractClassifier.trainOnInstance(AbstractClassifier

.java:147)

        at moa.tasks.LearnModel.doMainTask(LearnModel.java:96)

        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.ClassNotFoundException: org.pentaho.packageManagement.Packa

geManager

        at java.net.URLClassLoader$1.run(URLClassLoader.java:372)

        at java.net.URLClassLoader$1.run(URLClassLoader.java:361)

        at java.security.AccessController.doPrivileged(Native Method)

        at java.net.URLClassLoader.findClass(URLClassLoader.java:360)

        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)

        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)

        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)

        ... 14 more