Hoffman2:WEKA

GUI

To run the WEKA GUI from Hoffman2

1. Make sure that you enabled X11 forwarding by including the -Y flag in your SSH command:
   

    $ ssh -Y joebruin@hoffman2.idre.ucla.edu 

2. Request an interactive node to run on with the following command:
   

    $ qrsh -l i 

3. Wait for the new node to appear. Your prompt will change from:
   

    [joebruin@login4 ~] $ 

   to something like
   

    [joebruin@n1234 ~] $ 

4. Run the command:

    $ java -jar /u/home/FMRI/apps/weka/current/weka.jar 

   And the current version of WEKA should start up and the GUI will appear.

Command Line

Calling any of the usual WEKA command line tools will work in submitted jobs so long as you properly reference the WEKA jar file at:

/u/home/FMRI/apps/weka/current/weka.jar

A sample command would be

$ java -Xmx2g -cp /u/home/FMRI/apps/weka/current/weka.jar weka.classifiers.functions.SMO -o -T awesome_train_file.arff -t awesome_test_file.arff

where

-Xmx2g

calls for 2GB of memory

-o

suppresses the model ouput

-T awesome_train_file.arff

specifies the training file

-t awesome_test_file.arff

is an optional testing file for the model