Questions tagged [roc]

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1answer
13 views

AUC ROC Curve multi class Classification

Here is the part of the code for ROC AUC Curve calculation for multiple classes. ...
2
votes
1answer
40 views

What is the difference in plotting ROC curve with probability scores vs binary decisions

As the title reads what is the difference? Plotting the ROC w.r.t probability scores gives the stair cased version. But in my opinion I find that using binary decision is better because the ROC curve ...
1
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1answer
42 views

Algorithm for Binary classification

I have a data set with huge number of features ( Approximately 3000) and a binary target variable . The reason I have too many features is because of one hot encoding many categorical variables in ...
0
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2answers
47 views

Don't understand why I get an inverse ROC curve for SVM (Python)

I build an SVM classifier but get an inverse ROC curve. The AUC is only 0.08. I've used the same datasets to build a Logistic Regression classifier and a Decision Tree classifier, and the ROC curves ...
1
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2answers
34 views

Graphs for representing performance of machine learning classifiers [closed]

Can any please guide about how many types of the graph other than ROC can be plotted to represent the performance of the machine learning classifier?
3
votes
2answers
32 views

Lower-than-random ROC

If I have an ROC for a single classifier [y(x) in the range 0...1] that is 'worse than random', namely the AUC of the ROC is less than 0.5, would a classifier that reversed the class predictions [y'(...