Adversarial Examples, Uncertainty, and Transfer Testing Robustness in Gaussian Process Hybrid Deep Networks

Understand

Deep neural networks (DNNs) have excellent representative power and are state of the art classifiers on many tasks.

• However, they often do not capture their own uncertainties well making them less robust in the real world as they overconfidently extrapolate and do not notice domain shift.
• Gaussian processes (GPs) with RBF kernels on the other hand have better calibrated uncertainties and do not overconfidently extrapolate far from data in their training set.
• However, GPs have poor representational power and do not perform as well as DNNs on complex domains.