/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

15 votes171 views3 answers
How to get a row from a dataframe in python
Python
11 votes161 views4 answers
Sorted python lambda
Python
4 votes150 views1 answer
Pygame music player
Python
0 vote139 views9 answers
Python how to count ever yfile in fodler
Python
0 vote267 views2 answers
Pandas continues update csv
Python
1 vote139 views1 answer
What is values_list in django orm
Python
0 vote240 views1 answer
AssertionError: Relational field must provide a `queryset` argument, override `get_queryset`, or set read_only=`True`
Python
22 votes154 views6 answers
How to check django version
Python
26 votes145 views2 answers
How to build an auto emailer in python
Python
0 vote146 views1 answer
Dataproc initialization_actions error
Python