/Python/True positive true negative manually

True positive true negative manually

# 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 vote264 views1 answer
Numpy get length of list
Python
46 votes264 views4 answers
How to get the type of a variable in python
Python
0 vote252 views1 answer
Plot circles in matplotlib
Python
5 votes319 views2 answers
Django connexion session time
Python Django
17 votes273 views2 answers
Two loop type python
Python
0 vote292 views1 answer
Flask google analytics
Python Flask
23 votes254 views2 answers
How to check in which directory python in running
Python
19 votes279 views2 answers
Palindrome string python
Python
27 votes262 views4 answers
Python get exception message
Python
-1 vote228 views3 answers
AttributeError: 'numpy.ndarray' object has no attribute 'index'
Python