My Math Forum  

Go Back   My Math Forum > High School Math Forum > Elementary Math

Elementary Math Fractions, Percentages, Word Problems, Equations, Inequations, Factorization, Expansion


Reply
 
LinkBack Thread Tools Display Modes
October 19th, 2017, 10:44 AM   #1
Newbie
 
Joined: Dec 2012

Posts: 15
Thanks: 0

Interpreting a confusion matrix

Hi all,

I'm trying to interpret a confusion matrix, but I'm having difficulties as it is very confusing to me. Who can help?

Which is correct?

(a) Of the actual bare soil pixels (125), 69 of them are wrongly classified as residential. This is an omission or commission error?
(b) Of the actual bare soil pixels (125), 69 should have been residential pixels. This is an omission or commission error?

(a) Of the predicted grassland pixels (213), 45 of them are wrongly classified as open vegetation. This is an omission or commission error?
(b) Of the predicted grassland pixels (213), 45 should have been open vegetation pixels.

Thanks a lot!
Attached Images
File Type: jpg errormatrix.jpg (21.3 KB, 8 views)
jones123 is offline  
 
October 19th, 2017, 03:12 PM   #2
Math Team
 
Joined: Jan 2015
From: Alabama

Posts: 2,874
Thanks: 766

I have never seen the phrase "confusion matrix"! But, generally, "an error of commission" is something that is done, "an error of omission" is something that was not done. Given that, I would say that "wrongly classifying" as "residential" is an error of commission since a specific act, "classifying as residential" was incorrect. But when pixels that "should have been residential pixels" means that the error is that a specific thing, "classifying them as residential pixels" was not done- that is an error of omission.
Country Boy is offline  
Reply

  My Math Forum > High School Math Forum > Elementary Math

Tags
confusion, interpreting, matrix



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Interpreting a statement f(x,y) EXP Linear Algebra 4 March 8th, 2016 06:21 AM
Interpreting results doryyroryy Calculus 4 July 12th, 2015 04:26 PM
Confusion about the inverse of a matrix!!! sturmgewehr Algebra 3 April 29th, 2015 10:04 AM
Solve confusion matrix trucha Calculus 0 June 22nd, 2012 04:31 AM
Please help interpreting this graph. techdaemon Advanced Statistics 1 February 28th, 2010 11:17 PM





Copyright © 2017 My Math Forum. All rights reserved.