Using Weka in Matlab

Example file how to use weka (written in Java) in Matlab

Description

The file demonstrates interfacing Java with Matlab by using weka (Machine learning software, written in JAVA) as an example.

• MATLAB release: MATLAB 7.2 (R2006a)

[Jorge Diaz-Ramirez]

Excellent file..
Thank

[Daria Skripko]

Hi Muhammad, I find this very usful for me.
But if I run this example in Matlab I've got the following error:

-----------------------------------------------------
 ??? Java exception occurred:
java.lang.Exception:
Weka exception: No source has been specified

General options:

-h or -help
Output help information.
-synopsis or -info
Output synopsis for classifier (use in conjunction with -h)
-t <name of training file>
Sets training file.
-T <name of test file>
....
-E weka.classifiers.bayes.net.estimate.SimpleEstimator
Estimator algorithm

at weka.classifiers.Evaluation.evaluateModel(Unknown Source)

Error in ==> weka_example at 22
Evaluation.evaluateModel(javaObject('weka.classifiers.bayes.BayesNet'),prm);

------------------------------------------------------------------

Could you please help me?

Daria

[Daria Skripko]

 

[Daria Skripko]

That's great!

[Muhammad Shoaib Sehgal]

Here are some leads which might be helpful

1- From the error it seems the arff files are not available at:

v2 = java.lang.String('WEKA_HOME\trainData.arff');
v4 = java.lang.String('WEKA_HOME\testDATA.arff');

Can you check them and share what you are using Weka_Home?

2- Jut to be clear you are using it on windows? and for Mac/Unix you'd need to use / instead of \ to specify the path.

3- It seems some versions of weka are case sensitive so just make sure you use the same case (lower case) for the file extension.

https://list.scms.waikato.ac.nz/pipermail/wekalist/2008-August/014326.html

[Muhammad Shoaib Sehgal]

Thanks for using it. If you'd like to contact me. My active email can be obtained from:

http://shoaibs.wordpress.com/