/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

1 vote194 views1 answer
Telethon invite to group
Python
4 votes187 views1 answer
'numpy.ndarray' object has no attribute 'append'
Python
0 vote198 views1 answer
How to end a while loop python
Python
25 votes272 views2 answers
Create new django app
Python Django
1 vote185 views1 answer
Numpy replicate array
Python
0 vote181 views1 answer
Read list stored as a string with pandas read csv
Python
17 votes178 views2 answers
How to record execution time in python
Python
0 vote194 views1 answer
Convert multidimentional numpy array to string and back
Python
1 vote185 views1 answer
How to print x in python
Python
0 vote190 views1 answer
Python opens windows store
Python