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


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 