Re: IB1 Classifier

 The weka files are stored in a directory using the version numbers. 

By choice, I don't use a CLASSPATH environment variable. I set the classpath at runtime to avoid conflicts. 

So my real problem is accessing the Package Manager updated class files from a Java program. What class directory or jar file needs to be added to the classpath to access files added using the Package Manager?


Joe McVerry  

http://mcverryreport.com  - Links to Stock Trader Blogs and Reports

  

    On Thursday, August 19, 2021, 02:34:43 AM EDT, Peter Reutemann <[email protected]> wrote:  
 
 Rename the "wekafiles" directory (in your home directory) before starting up Weka. That ensures that you don't have any access to previously installed packages.

Also, make sure that you don't have any old Weka jars on your CLASSPATH environment variable.

Now start up Weka an check again.

Cheers, Peter

On August 19, 2021 6:22:11 PM GMT+12:00, Joseph McVerry <[email protected]> wrote:
The IB1 classifier is available in my version (3.9.5) of the Weka Explorer, even though I never installed it using the Package Manager.
When I upgrade my version of Weka does the upgrader look to see what I have installed?

Joe McVerry 

http://mcverryreport.com  - Links to Stock Trader Blogs and Reports

   On Wednesday, August 18, 2021, 09:46:33 PM EDT, Peter Reutemann <[email protected]> wrote:  
 
 > Presently I am using 3.9.5.
>
> I ran the jar.exe using the tf option against the weka.jar file. Here is a list of the lazy classifiers:
>
> ...
> weka/classifiers/lazy/
> weka/classifiers/lazy/kstar/
> ...
> weka/classifiers/lazy/IBk.class
> weka/classifiers/lazy/KStar.class
> weka/classifiers/lazy/LWL.class
> weka/classifiers/lazy/kstar/KStarCache$CacheTable.class
> weka/classifiers/lazy/kstar/KStarCache$TableEntry.class
> weka/classifiers/lazy/kstar/KStarCache.class
> weka/classifiers/lazy/kstar/KStarConstants.class
> weka/classifiers/lazy/kstar/KStarNominalAttribute.class
> weka/classifiers/lazy/kstar/KStarNumericAttribute.class
> weka/classifiers/lazy/kstar/KStarWrapper.class
> ...
>
>
> As you can see no IB1.class file is in the jar file.

Which aligns with what I wrote earlier:

Only older versions (pre 3.8, e.g., 3.6.15) will have IB1 as part of
the weka.jar. Newer versions, as Eibe pointed out, make it available
via a package. IBk is still available in the base weka.jar in newer
versions of Weka.

Below is the Weka package Eibe referenced that you need to install in
order to get the IB1 class (if you don't want to use IBk with k=1):
https://weka.sourceforge.io/packageMetaData/simpleEducationalLearningSchemes/index.html

Cheers, Peter
--
Peter Reutemann
Dept. of Computer Science
University of Waikato, NZ
+64 (7) 858-5174 (office)
+64 (7) 577-5304 (home office)
http://www.cms.waikato.ac.nz/~fracpete/
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