Pages: [1]
  Print  
Author Topic: Confusion about Confusion Matrix (pun intended)  (Read 475 times)
wypee
Newbie
*
Posts: 7


« on: January 17, 2014, 04:42:38 AM »

Guys, please help me make sense of this performance vector. I know how to interpret the Accuracy tab:



But when I click on the precision tab, I get this:



Why the pred0,true0 cell count has gone from 1846 to 437? Why is the precision tab precision 19.14% not matching with any of the class precision on the accuracy tab (80.86% and 77.39%)?

 
Logged
wypee
Newbie
*
Posts: 7


« Reply #1 on: January 17, 2014, 04:45:28 AM »

Not sure why the images are coming as broken. Here are the links:

https://www.dropbox.com/s/0yjm2pdtw2a4zpm/1.png

https://www.dropbox.com/s/0btzchvmi1wi6iy/2.png
Logged
Marius
Administrator
Hero Member
*****
Posts: 1793



WWW
« Reply #2 on: January 17, 2014, 10:05:34 AM »

This looks definitely like a bug. Can you please post a process that reproduces this behavior?

Best regards,
Marius
Logged

Please add [SOLVED] to the topic title when your problem has been solved! (do so by editing the first post in the thread and modifying the title)
Please click here before posting.
wypee
Newbie
*
Posts: 7


« Reply #3 on: January 17, 2014, 03:00:38 PM »

Thanks Marius. Here is the process:

https://www.dropbox.com/s/cf15krxbmllihlp/insult_process.rmp

This is for one of the kaggle competition to classify user comments as insulting/not-insulting. It uses the following sub-process:

https://www.dropbox.com/s/hzdj0ef7kczouol/prep_text_data.rmp

Regards,
Yogesh
Logged
Marius
Administrator
Hero Member
*****
Posts: 1793



WWW
« Reply #4 on: January 20, 2014, 09:46:55 AM »

Thank you. If have created an internal bug report.
Logged

Please add [SOLVED] to the topic title when your problem has been solved! (do so by editing the first post in the thread and modifying the title)
Please click here before posting.
Pages: [1]
  Print  
 
Jump to: