Hi Dennis,
You can refer to these links to measure confidence intervals for various models.
For Neural Networks, check this ML Answers thread:https://in.mathworks.com/matlabcentral/answers/254082-how-to-calculate-confidence-intervals-with-neural-network-prediction
Additional resources:
For SVM, you can check this link (you can do a binary classification using SVMs as well): https://in.mathworks.com/help/stats/classreg.learning.classif.compactclassificationsvm.predict.html
