/Python/Numpy computer false positive and false negative

Numpy computer false positive and false negative

# True Positive (TP): we predict a label of 1 (positive), and the true label is 1.
TP = np.sum(np.logical_and(pred_labels == 1, true_labels == 1))
 
# True Negative (TN): we predict a label of 0 (negative), and the true label is 0.
TN = np.sum(np.logical_and(pred_labels == 0, true_labels == 0))
 
# False Positive (FP): we predict a label of 1 (positive), but the true label is 0.
FP = np.sum(np.logical_and(pred_labels == 1, true_labels == 0))
 
# False Negative (FN): we predict a label of 0 (negative), but the true label is 1.
FN = np.sum(np.logical_and(pred_labels == 0, true_labels == 1))
 
print 'TP: %i, FP: %i, TN: %i, FN: %i' % (TP,FP,TN,FN)

Source: kawahara.ca

Similar codes

0 vote168 views1 answer
How to change bit in integer in python
Python
0 vote187 views2 answers
What is the tracing output of the code below x=10 y=50 if(x**2> 100 and y <100): print(x,y)
Python
4 votes148 views1 answer
Time.time()
Python
0 vote185 views1 answer
Convert 1 digit to 2 digit python
Python
1 vote203 views1 answer
Python local variables
Python
3 votes217 views2 answers
How to create a network scanner in python
Python
99 votes214 views3 answers
Random module
Python
0 vote199 views2 answers
Is login a class in python
Python
1 vote140 views1 answer
Get urls from any website use python
Python
0 vote176 views1 answer
Python does strftime work with date objects
Python