Re: Help

> how to add an evaluation metric in Weka like G-mean. what is the process of adding new columns to my weka interface.

Weka allows you to plug in additional metrics. You can develop one
yourself in Java, e.g., as a Weka package. Here are some pointers:
- Pluggable evaluation metrics
  https://waikato.github.io/weka-wiki/faqs/pluggable_evaluation_metrics/
- Details on Weka packages
  https://waikato.github.io/weka-wiki/packages/structure/

Here is the source code for the percentageErrorMetrics package, which
you can possible use as a template:
https://git.cms.waikato.ac.nz/weka/weka/-/tree/main/trunk/packages/internal/percentageErrorMetrics

Cheers, Peter
-- 
Peter Reutemann
Dept. of Computer Science
University of Waikato, Hamilton, NZ
Mobile +64 22 190 2375
https://www.cs.waikato.ac.nz/~fracpete/
http://www.data-mining.co.nz/
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